Tontine Capital Overseas GP, LLC

SEC source: 0001048268-25-000082 · wk-form4_1749846575.xml · nonDerivative · entry 2

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,917,554

F7 · price: Also on June 11, 2025, TCP 2 sold 2,155 shares of Common Stock at a weighted average price of $275.84 per share. These shares were sold in multiple transactions at prices ranging from $275.74 to $276.00, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,614,644 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 956,771 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 640,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 163,218 shares of Common Stock and 72,635 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-25-000082 · wk-form4_1749846575.xml · nonDerivative · entry 1

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,919,709

F1 · price: On June 11, 2025, TCP 2 sold 3,609 shares of Common Stock at a weighted average price of $272.25 per share. These shares were sold in multiple transactions at prices ranging from $272.24 to $272.34, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,614,644 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 956,771 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 640,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 163,218 shares of Common Stock and 72,635 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-25-000077 · wk-form4_1749159332.xml · nonDerivative · entry 3

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,923,318

F7 · price: On June 4, 2025, TCP 2 sold 6,722 shares of Common Stock. These shares were sold in multiple transactions, each at a price of $275.00 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold in each separate transaction described in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,614,644 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 962,535 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 163,218 shares of Common Stock and 72,635 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-25-000077 · wk-form4_1749159332.xml · nonDerivative · entry 2

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,930,040

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,614,644 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 962,535 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 163,218 shares of Common Stock and 72,635 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-25-000077 · wk-form4_1749159332.xml · nonDerivative · entry 1

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,942,084

F1 · price: On June 3, 2025, TCP 2 (as defined herein) sold 15,100 shares of Common Stock at a weighted average price of $275.76 per share. These shares were sold in multiple transactions at prices ranging from $275.00 to $275.92, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,614,644 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 962,535 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 163,218 shares of Common Stock and 72,635 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000158 · wk-form4_1734559343.xml · nonDerivative · entry 1

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,957,184

F1 · shares: On December 16, 2024, TCP 2 (as defined herein) sold 470 shares of Common Stock at a weighted average price of $252.25 per share. These shares were sold in multiple transactions at prices ranging from $252.24 to $252.44, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,614,644 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 996,401 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 163,218 shares of Common Stock and 72,635 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000154 · wk-form4_1734127509.xml · nonDerivative · entry 3

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,957,654

F8 · shares: On December 12, 2024, TCP 2 sold 1,246 shares of Common Stock at a weighted average price of $257.24 per share. These shares were sold in multiple transactions at prices ranging from $257.24 to $257.33, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,614,644 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 996,871 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 163,218 shares of Common Stock and 72,635 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000154 · wk-form4_1734127509.xml · nonDerivative · entry 2

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,958,900

F7 · shares: Also on December 11, 2024, TCP 2 sold 180 shares of Common Stock at a weighted average price of $262.39 per share. These shares were sold in multiple transactions at prices ranging from $262.24 to $262.41, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,614,644 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 996,871 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 163,218 shares of Common Stock and 72,635 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000154 · wk-form4_1734127509.xml · nonDerivative · entry 1

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,959,080

F1 · shares: On December 11, 2024, TCP 2 (as defined herein) sold 12,209 shares of Common Stock at a weighted average price of $257.30 per share. These shares were sold in multiple transactions at prices ranging from $257.24 to $257.74, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,614,644 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 996,871 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 163,218 shares of Common Stock and 72,635 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000148 · wk-form4_1733263307.xml · nonDerivative · entry 3

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,971,289

F8 · shares: Also on December 2, 2024, TCP sold 2,362 shares of Common Stock at a weighted average price of $314.25 per share. These shares were sold in multiple transactions at prices ranging from $314.25 to $ 314.30, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,614,644 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 163,218 shares of Common Stock and 72,635 PSUs granted to him pursuant to the 2006 Equity Incentive Plan, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000148 · wk-form4_1733263307.xml · nonDerivative · entry 2

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,973,651

F7 · shares: On December 2, 2024, TCP sold 717 shares of Common Stock at a weighted average price of $313.44 per share. These shares were sold in multiple transactions at prices ranging from $313.24 to $314.16, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,614,644 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 163,218 shares of Common Stock and 72,635 PSUs granted to him pursuant to the 2006 Equity Incentive Plan, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000148 · wk-form4_1733263307.xml · nonDerivative · entry 1

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,974,368

F1 · shares: Represents shares of Common Stock withheld to satisfy the withholding tax obligation resulting from the vesting of the second tranche of the Phantom Stock Units ("PSUs") granted to Mr. Gendell on December 1, 2021 pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated (the "2006 Equity Incentive Plan").

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,614,644 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 163,218 shares of Common Stock and 72,635 PSUs granted to him pursuant to the 2006 Equity Incentive Plan, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000143 · wk-form4_1732918449.xml · nonDerivative · entry 2

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,985,952

F7 · shares: On November 27, 2024, Mr. Gendell was granted an additional award of PSUs pursuant to the 2006 Equity Incentive Plan. The 1,107 PSUs granted to Mr. Gendell on November 27, 2024 (the "Regular Time-Based PSUs") will vest upon the continued performance of services through the scheduled vesting date. The Regular Time-Based PSUs are scheduled to vest on the earlier of (i) December 15, 2027 and (ii) the date that the Issuer files its Annual Report on Form 10-K for its fiscal year ending September 30, 2027.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 97,635 PSUs granted to him pursuant to the 2006 Equity Incentive Plan, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000143 · wk-form4_1732918449.xml · nonDerivative · entry 1

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,984,845

F1 · shares: On November 27, 2024, Mr. Gendell was granted an award of Phantom Stock Units ("PSUs") pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated (the "2006 Equity Incentive Plan"). Each PSU represents a contractual right in respect of one share of the Issuer's Common Stock. The 50,000 PSUs granted to Mr. Gendell on November 27, 2024 (the "Special Time-Based PSUs") are divided into two equal tranches and will vest upon the continued performance of services through the respective scheduled vesting dates. The first tranche of Special Time-Based PSUs is scheduled to vest on December 1, 2026 and the second tranche of Special Time-Based PSUs is scheduled to vest on December 1, 2027.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 97,635 PSUs granted to him pursuant to the 2006 Equity Incentive Plan, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000114 · wk-form4_1726527820.xml · nonDerivative · entry 10

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,934,845

F14 · price: Also on September 16, 2024, TCP 2 sold 4,969 shares of Common Stock. These shares were sold in multiple transactions, each at a price of $161.53 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold in each separate transaction described in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000114 · wk-form4_1726527820.xml · nonDerivative · entry 9

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,939,814

F13 · price: On September 16, 2024, TCP 2 sold 32,378 shares of Common Stock at a weighted average price of $160.00 per share. These shares were sold in multiple transactions at prices ranging from $159.74 to $160.24, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000114 · wk-form4_1726527820.xml · nonDerivative · entry 8

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,972,192

F12 · price: Also on September 13, 2024, TCP 2 sold 1,487 shares of Common Stock at a weighted average price of $163.30 per share. These shares were sold in multiple transactions at prices ranging from $163.14 to $163.46, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000114 · wk-form4_1726527820.xml · nonDerivative · entry 7

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,973,679

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000114 · wk-form4_1726527820.xml · nonDerivative · entry 6

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,983,679

F11 · price: Also on September 13, 2024, TCP 2 sold 11,166 shares of Common Stock at a weighted average price of $161.19 per share. These shares were sold in multiple transactions at prices ranging from $161.00 to $161.47, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000114 · wk-form4_1726527820.xml · nonDerivative · entry 5

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,994,845

F10 · price: Also on September 13, 2024, TCP 2 sold 8,987 shares of Common Stock at a weighted average price of $159.50 per share. These shares were sold in multiple transactions at prices ranging from $159.50 to $160.00, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000114 · wk-form4_1726527820.xml · nonDerivative · entry 4

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,003,832

F9 · price: On September 13, 2024, TCP 2 sold 33,152 shares of Common Stock at a weighted average price of $158.77 per share. These shares were sold in multiple transactions at prices ranging from $158.50 to $159.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000114 · wk-form4_1726527820.xml · nonDerivative · entry 3

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,036,984

F8 · price: Also on September 12, 2024, TCP 2 sold 4,383 shares of Common Stock at a weighted average price of $160.50 per share. These shares were sold in multiple transactions at prices ranging from $160.50 to $160.61, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000114 · wk-form4_1726527820.xml · nonDerivative · entry 2

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,041,367

F7 · price: Also on September 12, 2024, TCP 2 sold 12,372 shares of Common Stock at a weighted average price of $158.69 per share. These shares were sold in multiple transactions at prices ranging from $158.50 to $159.49, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000114 · wk-form4_1726527820.xml · nonDerivative · entry 1

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,053,739

F1 · price: On September 12, 2024, TCP 2 (as defined herein) sold 31,106 shares of Common Stock at a weighted average price of $157.82 per share. These shares were sold in multiple transactions at prices ranging from $157.50 to $158.00, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,010,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000101 · wk-form4_1723237756.xml · nonDerivative · entry 3

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,084,845

F8 · price: On August 8, 2024, TCP 2 sold 49,242 shares of Common Stock at a weighted average price of $160.00 per share. These shares were sold in multiple transactions at prices ranging from $160.00 to $160.12, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,160,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000101 · wk-form4_1723237756.xml · nonDerivative · entry 2

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,134,087

F7 · price: Also on August 7, 2024, TCP 2 sold 1,795 shares of Common Stock at a weighted average price of $162.14 per share. These shares were sold in multiple transactions at prices ranging from $161.59 to $162.54, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,160,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000101 · wk-form4_1723237756.xml · nonDerivative · entry 1

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,135,882

F1 · price: On August 7, 2024, TCP 2 (as defined herein) sold 48,963 shares of Common Stock at a weighted average price of $160.55 per share. These shares were sold in multiple transactions at prices ranging from $160.55 to $161.50, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F3 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,160,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F4 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F5 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F6 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000082 · wk-form4_1718312448.xml · nonDerivative · entry 4

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,184,845

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F10 · price: Also on June 12, 2024, TCP 2 sold 5,400 shares of Common Stock at a weighted average price of $135.58 per share. These shares were sold in multiple transactions at prices ranging from $135.16 to $135.89, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,260,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000082 · wk-form4_1718312448.xml · nonDerivative · entry 3

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,190,245

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F9 · price: Also on June 12, 2024, TCP 2 sold 1,200 shares of Common Stock at a weighted average price of $134.41 per share. These shares were sold in multiple transactions at prices ranging from $134.13 to $134.80, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,260,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000082 · wk-form4_1718312448.xml · nonDerivative · entry 2

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,191,445

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F8 · price: Also on June 12, 2024, TCP 2 sold 9,100 shares of Common Stock at a weighted average price of $132.91 per share. These shares were sold in multiple transactions at prices ranging from $132.50 to $133.49, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,260,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000082 · wk-form4_1718312448.xml · nonDerivative · entry 1

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,200,545

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F2 · price: On June 12, 2024, TCP 2 sold 9,300 shares of Common Stock at a weighted average price of $131.88 per share. These shares were sold in multiple transactions at prices ranging from $131.50 to $132.46, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,260,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000080 · wk-form4_1718226125.xml · nonDerivative · entry 12

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,209,845

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,285,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000080 · wk-form4_1718226125.xml · nonDerivative · entry 11

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,209,945

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F17 · price: Also on June 11, 2024, TCP 2 sold 500 shares of Common Stock. These shares were sold in multiple transactions, each at a price of $129.09 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold in each separate transaction described in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,285,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000080 · wk-form4_1718226125.xml · nonDerivative · entry 10

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,210,445

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F16 · price: Also on June 11, 2024, TCP 2 sold 2,436 shares of Common Stock at a weighted average price of $128.29 per share. These shares were sold in multiple transactions at prices ranging from $128.03 to $128.71, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,285,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000080 · wk-form4_1718226125.xml · nonDerivative · entry 9

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,212,881

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F15 · price: Also on June 11, 2024, TCP 2 sold 8,919 shares of Common Stock at a weighted average price of $127.44 per share. These shares were sold in multiple transactions at prices ranging from $127.03 to $128.02, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,285,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000080 · wk-form4_1718226125.xml · nonDerivative · entry 8

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,221,800

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F14 · price: Also on June 11, 2024, TCP 2 sold 7,170 shares of Common Stock at a weighted average price of $126.59 per share. These shares were sold in multiple transactions at prices ranging from $126.02 to $127.01, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,285,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000080 · wk-form4_1718226125.xml · nonDerivative · entry 7

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,228,970

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F13 · price: On June 11, 2024, TCP 2 sold 5,000 shares of Common Stock at a weighted average price of $125.24 per share. These shares were sold in multiple transactions at prices ranging from $125.00 to $125.91, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,285,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000080 · wk-form4_1718226125.xml · nonDerivative · entry 6

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,233,970

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F12 · price: Also on June 10, 2024, TCP 2 sold 1,936 shares of Common Stock at a weighted average price of $131.50 per share. These shares were sold in multiple transactions at prices ranging from $131.27 to $131.93, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,285,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000080 · wk-form4_1718226125.xml · nonDerivative · entry 5

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,235,906

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F11 · price: Also on June 10, 2024, TCP 2 sold 23,388 shares of Common Stock at a weighted average price of $130.65 per share. These shares were sold in multiple transactions at prices ranging from $130.22 to $131.18, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,285,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000080 · wk-form4_1718226125.xml · nonDerivative · entry 4

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,259,294

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F10 · price: Also on June 10, 2024, TCP 2 sold 13,259 shares of Common Stock at a weighted average price of $129.80 per share. These shares were sold in multiple transactions at prices ranging from $129.22 to $130.21, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,285,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000080 · wk-form4_1718226125.xml · nonDerivative · entry 3

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,272,553

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F9 · price: Also on June 10, 2024, TCP 2 sold 1,128 shares of Common Stock at a weighted average price of $128.45 per share. These shares were sold in multiple transactions at prices ranging from $128.22 to $129.08, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,285,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000080 · wk-form4_1718226125.xml · nonDerivative · entry 2

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,273,681

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F8 · price: Also on June 10, 2024, TCP 2 sold 3,172 shares of Common Stock at a weighted average price of $127.89 per share. These shares were sold in multiple transactions at prices ranging from $127.22 to $128.21, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,285,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000080 · wk-form4_1718226125.xml · nonDerivative · entry 1

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,276,853

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F2 · price: On June 10, 2024, TCP 2 sold 1,566 shares of Common Stock at a weighted average price of $126.50 per share. These shares were sold in multiple transactions at prices ranging from $126.20 to $126.72, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,285,506 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000078 · wk-form4_1718053277.xml · nonDerivative · entry 9

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,278,419

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F15 · price: Also on June 7, 2024, TCP 2 sold 1,730 shares of Common Stock at a weighted average price of $130.24 per share. These shares were sold in multiple transactions at prices ranging from $130.06 to $130.80, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,354,080 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000078 · wk-form4_1718053277.xml · nonDerivative · entry 8

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,280,149

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F14 · price: Also on June 7, 2024, TCP 2 sold 4,394 shares of Common Stock at a weighted average price of $128.96 per share. These shares were sold in multiple transactions at prices ranging from $128.71 to $129.52, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,354,080 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000078 · wk-form4_1718053277.xml · nonDerivative · entry 7

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,284,543

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F13 · price: Also on June 7, 2024, TCP 2 sold 13,848 shares of Common Stock at a weighted average price of $128.26 per share. These shares were sold in multiple transactions at prices ranging from $127.71 to $128.70, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,354,080 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000078 · wk-form4_1718053277.xml · nonDerivative · entry 6

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,298,391

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F12 · price: On June 7, 2024, TCP 2 sold 6,171 shares of Common Stock at a weighted average price of $127.24 per share. These shares were sold in multiple transactions at prices ranging from $126.71 to $127.70, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,354,080 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000078 · wk-form4_1718053277.xml · nonDerivative · entry 5

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,304,562

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F11 · price: Also on June 6, 2024, TCP 2 sold 400 shares of Common Stock at a weighted average price of $136.07 per share. These shares were sold in multiple transactions at prices ranging from $135.36 to $136.33, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,354,080 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000078 · wk-form4_1718053277.xml · nonDerivative · entry 4

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,304,962

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F10 · price: Also on June 6, 2024, TCP 2 sold 1,416 shares of Common Stock at a weighted average price of $134.76 per share. These shares were sold in multiple transactions at prices ranging from $134.25 to $135.00, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,354,080 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.

SEC source: 0001048268-24-000078 · wk-form4_1718053277.xml · nonDerivative · entry 3

GENDELL JEFFREY L ET AL · CIK 0000948904 · Director · Chief Executive Officer · 10% owner

TONTINE CAPITAL PARTNERS L P · CIK 0001276922 · 10% owner

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

TONTINE CAPITAL OVERSEAS MASTER FUND II, L.P. · CIK 0001482608 · 10% owner

TONTINE ASSET ASSOCIATES, L.L.C. · CIK 0001482609 · 10% owner

Tontine Associates, LLC · CIK 0001491514 · 10% owner

Tontine Capital Overseas GP, LLC · CIK 0001409490 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Plan reported

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,306,378

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on March 6, 2024.

F9 · price: Also on June 6, 2024, TCP 2 sold 2,270 shares of Common Stock at a weighted average price of $133.65 per share. These shares were sold in multiple transactions at prices ranging from $133.23 to $134.01, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · ownership.nature: This report is filed jointly by Tontine Capital Partners, L.P., a Delaware limited partnership ("TCP"), Tontine Capital Management, L.L.C., a Delaware limited liability company ("TCM"), Tontine Management, L.L.C., a Delaware limited liability company ("TM"), Tontine Capital Overseas Master Fund II, L.P., a Delaware limited partnership ("TCP 2"), Tontine Asset Associates, L.L.C., a Delaware limited liability company ("TAA"), Tontine Associates, L.L.C., a Delaware limited liability company ("TA"), Tontine Capital Overseas GP, L.L.C., a Delaware limited liability company ("TCO"), and Jeffrey L. Gendell ("Mr. Gendell"). Mr. Gendell is the managing member of: (a) TCM, the general partner of TCP; (b) TM; (c) TAA, the general partner of TCP 2; (d) TA; and (e) TCO.

F4 · ownership.nature: TCP directly owns 5,617,723 shares of Common Stock, TCM directly owns 1,910,529 shares of Common Stock, TM directly owns 1,410,162 shares of Common Stock, TCP 2 directly owns 1,354,080 shares of Common Stock, TAA directly owns 96,891 shares of Common Stock, TA directly owns 642,057 shares of Common Stock, TCO directly owns 47,284 shares of Common Stock, Mr. Gendell directly owns 149,802 shares of Common Stock and 46,528 phantom stock units granted to him pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated, and Mr. Gendell's adult children own 3,363 shares of Common Stock through trusts for which Mr. Gendell acts as trustee.

F5 · ownership.nature: All of the foregoing securities may be deemed to be beneficially owned by Mr. Gendell. The foregoing securities held by TCP may be deemed to be beneficially owned by TCM. The foregoing securities held by TCP 2 may be deemed to be beneficially owned by TAA.

F6 · ownership.nature: Mr. Gendell disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by Mr. Gendell or representing Mr. Gendell's pro rata interest in, and interest in the profits of, TCM, TCP, TM, TCP 2, TAA, TA and TCO. TCM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCM or representing TCM's pro rata interest in, and interest in the profits of, TCP.

F7 · ownership.nature: TAA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TAA or representing TAA's pro rata interest in, and interest in the profits of, TCP 2. TA disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TA. TM disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TM. TCO disclaims beneficial ownership of the Issuer's securities reported herein for purposes of Section 16(a) under the Securities Exchange Act of 1934, as amended, or otherwise, except as to securities directly owned by TCO.