IESC

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.

SEC source: 0001048268-24-000078 · wk-form4_1718053277.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: 11,308,648

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 6, 2024, TCP 2 sold 1,163 shares of Common Stock at a weighted average price of $131.78 per share. These shares were sold in multiple transactions at prices ranging from $131.54 to $132.20, 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 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: 11,309,811

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 6, 2024, TCP 2 sold 9,312 shares of Common Stock at a weighted average price of $130.89 per share. These shares were sold in multiple transactions at prices ranging from $130.45 to $131.44, 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.

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: 0001048268-24-000076 · wk-form4_1717707738.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: 11,319,123

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 5, 2024, TCP 2 sold 2,972 shares of Common Stock at a weighted average price of $138.53 per share. These shares were sold in multiple transactions at prices ranging from $138.31 to $139.05, 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 1,394,784 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: 0001048268-24-000076 · wk-form4_1717707738.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: 11,322,095

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 5, 2024, TCP 2 sold 23,811 shares of Common Stock at a weighted average price of $137.81 per share. These shares were sold in multiple transactions at prices ranging from $137.30 to $138.25, 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.

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 1,394,784 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: 0001048268-24-000076 · wk-form4_1717707738.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: 11,345,906

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.

F15 · price: Also on June 5, 2024, TCP 2 sold 3,229 shares of Common Stock at a weighted average price of $137.04 per share. These shares were sold in multiple transactions at prices ranging from $136.30 to $137.29, 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 1,394,784 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: 0001048268-24-000076 · wk-form4_1717707738.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: 11,349,135

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: On June 5, 2024, TCP 2 sold 3,214 shares of Common Stock at a weighted average price of $134.91 per share. These shares were sold in multiple transactions at prices ranging from $134.58 to $135.32, 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 1,394,784 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: 0001048268-24-000076 · wk-form4_1717707738.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: 11,352,349

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 4, 2024, TCP 2 sold 697 shares of Common Stock at a weighted average price of $145.13 per share. These shares were sold in multiple transactions at prices ranging from $144.50 to $145.49, 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 1,394,784 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: 0001048268-24-000076 · wk-form4_1717707738.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: 11,353,046

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 4, 2024, TCP 2 sold 500 shares of Common Stock at a weighted average price of $142.52 per share. These shares were sold in multiple transactions at prices ranging from $142.50 to $142.77, 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 1,394,784 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: 0001048268-24-000076 · wk-form4_1717707738.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: 11,353,546

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 4, 2024, TCP 2 sold 1,653 shares of Common Stock at a weighted average price of $140.12 per share. These shares were sold in multiple transactions at prices ranging from $139.73 to $140.25, 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.

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 1,394,784 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: 0001048268-24-000076 · wk-form4_1717707738.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: 11,355,199

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 4, 2024, TCP 2 sold 625 shares of Common Stock at a weighted average price of $138.42 per share. These shares were sold in multiple transactions at prices ranging from $138.41 to $138.45, 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 1,394,784 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: 0001048268-24-000076 · wk-form4_1717707738.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: 11,355,824

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 4, 2024, TCP 2 sold 3,400 shares of Common Stock at a weighted average price of $137.80 per share. These shares were sold in multiple transactions at prices ranging from $137.39 to $138.24, 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.

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 1,394,784 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: 0001048268-24-000076 · wk-form4_1717707738.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: 11,359,224

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 4, 2024, TCP 2 sold 8,342 shares of Common Stock at a weighted average price of $135.67 per share. These shares were sold in multiple transactions at prices ranging from $135.40 to $136.19, 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 1,394,784 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: 0001048268-24-000076 · wk-form4_1717707738.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: 11,367,566

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 4, 2024, TCP 2 sold 17,279 shares of Common Stock at a weighted average price of $134.87 per share. These shares were sold in multiple transactions at prices ranging from $134.40 to $135.39, 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 1,394,784 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: 0001048268-24-000074 · wk-form4_1716930064.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: 11,384,845

F8 · shares: Also on May 24, 2024, TCP sold 2,494 shares of Common Stock at a weighted average price of $161.41 per share. These shares were sold in multiple transactions at prices ranging from $161.25 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 1,460,506 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: 0001048268-24-000074 · wk-form4_1716930064.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: 11,387,339

F7 · shares: On May 24, 2024, TCP sold 19,255 shares of Common Stock at a weighted average price of $160.92 per share. These shares were sold in multiple transactions at prices ranging from $160.24 to $161.12 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 1,460,506 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: 0001048268-24-000074 · wk-form4_1716930064.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: 11,406,594

F1 · shares: On May 23, 2024, TCP (as defined herein) sold 3,251 shares of Common Stock. These shares were sold in multiple transactions, each at a price of $160.50 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 1,460,506 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: 0001048268-24-000072 · wk-form4_1715301208.xml · nonDerivative · entry 5

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,110

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.916 to $172.402, inclusive. The reporting person undertakes to provide IES, any security holder of IES, 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 ranges set forth in this footnote.

SEC source: 0001048268-24-000072 · wk-form4_1715301208.xml · nonDerivative · entry 4

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,110

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.901 to $171.811, inclusive. The reporting person undertakes to provide IES, any security holder of IES, 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 ranges set forth in this footnote.

SEC source: 0001048268-24-000072 · wk-form4_1715301208.xml · nonDerivative · entry 3

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,690

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $169.891 to $170.851, inclusive. The reporting person undertakes to provide IES, any security holder of IES, 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 ranges set forth in this footnote.

SEC source: 0001048268-24-000072 · wk-form4_1715301208.xml · nonDerivative · entry 2

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,626

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $168.851 to $169.731, inclusive. The reporting person undertakes to provide IES, any security holder of IES, 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 ranges set forth in this footnote.

SEC source: 0001048268-24-000072 · wk-form4_1715301208.xml · nonDerivative · entry 1

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,011

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $167.841 to $168.821, inclusive. The reporting person undertakes to provide IES Holdings, Inc. ("IES"), any security holder of IES, 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 ranges set forth in this footnote.

SEC source: 0001048268-24-000059 · wk-form4_1712092762.xml · nonDerivative · entry 1

LEYKUM ELIZABETH · CIK 0001560698 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,713

F1 · security: Represents Phantom Stock Units ("PSUs") granted pursuant to the IES Holdings, Inc. ("IES") 2006 Equity Incentive Plan, as amended and restated (the "2006 Equity Incentive Plan") upon Ms. Leykum electing to receive PSUs in lieu of cash or common stock for that portion of her retainer. Each unit converts to one share of IES common stock when either (i) Ms. Leykum leaves the board of directors for any reason, or (ii) upon a change of control as defined in the 2006 Equity Incentive Plan.

SEC source: 0001048268-24-000058 · wk-form4_1712092664.xml · nonDerivative · entry 1

Koshkin Joe D · CIK 0001495394 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,887

F1 · security: Represents Phantom Stock Units ("PSUs") granted pursuant to the IES Holdings, Inc. ("IES") 2006 Equity Incentive Plan, as amended and restated (the "2006 Equity Incentive Plan") upon Mr. Koshkin electing to receive PSUs in lieu of cash or common stock for that portion of his retainer. Each unit converts to one share of IES common stock when either (i) Mr. Koshkin leaves the board of directors for any reason, or (ii) upon a change of control as defined in the 2006 Equity Incentive Plan.

SEC source: 0001048268-24-000057 · wk-form4_1712092595.xml · nonDerivative · entry 1

Gendell David B. · CIK 0001408176 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,793

F1 · security: Represents Phantom Stock Units ("PSUs") granted pursuant to the IES Holdings, Inc. ("IES") 2006 Equity Incentive Plan, as amended and restated (the "2006 Equity Incentive Plan") upon Mr. Gendell electing to receive PSUs in lieu of common stock or cash for that portion of his retainer. Each unit converts to one share of IES common stock when either (i) Mr. Gendell leaves the board of directors for any reason, or (ii) upon a change of control as defined in the 2006 Equity Incentive Plan.

SEC source: 0001048268-24-000056 · wk-form4_1712092498.xml · nonDerivative · entry 1

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,459

F1 · security: Represents Phantom Stock Units ("PSUs") granted pursuant to the IES Holdings, Inc. ("IES") 2006 Equity Incentive Plan, as amended and restated (the "2006 Equity Incentive Plan") upon Mr. Cleveland electing to receive PSUs in lieu of common stock or cash for that portion of his retainer. Each unit converts to one share of IES common stock when either (i) Mr. Cleveland leaves the board of directors for any reason, or (ii) upon a change of control as defined in the 2006 Equity Incentive Plan.

SEC source: 0001048268-24-000055 · wk-form4_1712092310.xml · nonDerivative · entry 1

Baldock Jennifer A · CIK 0001281437 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,676

F1 · security: Represents Phantom Stock Units ("PSUs") granted pursuant to the IES Holdings, Inc. ("IES") 2006 Equity Incentive Plan, as amended and restated (the "2006 Equity Incentive Plan") upon Ms. Baldock electing to receive PSUs in lieu of cash or common stock for that portion of her retainer. Each unit converts to one share of IES common stock when either (i) Ms. Baldock leaves the board of directors for any reason, or (ii) upon a change of control as defined in the 2006 Equity Incentive Plan.

SEC source: 0001048268-24-000049 · wk-form4_1710538635.xml · nonDerivative · entry 2

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,110

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $102.495 to $102.89, inclusive. The reporting person undertakes to provide IES, any security holder of IES, 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 ranges set forth in this footnote.

SEC source: 0001048268-24-000049 · wk-form4_1710538635.xml · nonDerivative · entry 1

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 87,510

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $101.47 to $102.27, inclusive. The reporting person undertakes to provide IES Holdings, Inc. ("IES"), any security holder of IES, 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 ranges set forth in this footnote.

SEC source: 0001048268-24-000040 · wk-form4_1709851899.xml · nonDerivative · entry 6

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,236

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $116.00 to $116.25, inclusive. The reporting person undertakes to provide IES, any security holder of IES, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001048268-24-000040 · wk-form4_1709851899.xml · nonDerivative · entry 5

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,167

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.90 to $115.83, inclusive. The reporting person undertakes to provide IES, any security holder of IES, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001048268-24-000040 · wk-form4_1709851899.xml · nonDerivative · entry 4

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 123,949

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $113.85 to $114.70, inclusive. The reporting person undertakes to provide IES, any security holder of IES, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001048268-24-000047 · wk-form4_1709936764.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: 11,409,845

F1 · shares: Represents shares of Common Stock withheld to satisfy the withholding tax obligation resulting from the vesting of the first 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 5,642,723 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 1,460,506 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 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: 0001048268-24-000046 · wk-form4_1709936571.xml · nonDerivative · entry 1

McLauchlin Tracy · CIK 0001456922 · SVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 69,377

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.95 to $115.58, inclusive. The reporting person undertakes to provide IES Holdings, Inc. ("IES"), any security holder of IES, 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 ranges set forth in this footnote.

SEC source: 0001048268-24-000045 · wk-form4_1709936456.xml · nonDerivative · entry 1

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,110

F1 · shares: Represents shares of Common Stock withheld to satisfy the withholding tax obligation resulting from the vesting of the remaining portion of the first tranche of the phantom stock units granted to Mr. Simmes on December 3, 2021 pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated.

SEC source: 0001048268-24-000040 · wk-form4_1709851899.xml · nonDerivative · entry 3

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 127,749

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $113.00 to $ 113.59, inclusive. The reporting person undertakes to provide IES, any security holder of IES, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001048268-24-000040 · wk-form4_1709851899.xml · nonDerivative · entry 2

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,581

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $114.85 to $115.46, inclusive. The reporting person undertakes to provide IES, any security holder of IES, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001048268-24-000040 · wk-form4_1709851899.xml · nonDerivative · entry 1

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 134,581

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $113.835 to $114.65, inclusive. The reporting person undertakes to provide IES Holdings, Inc. ("IES"), any security holder of IES, or the staff of the Securities and Exchange Commission ("SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001048268-24-000036 · wk-form4_1707948528.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: 11,421,435

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 August 31, 2023.

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 5,642,723 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 1,460,506 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 136,392 shares of Common Stock and 71,528 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: 0001048268-24-000036 · wk-form4_1707948528.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: 11,421,535

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 August 31, 2023.

F11 · price: On February 13, 2024, TCP 2 sold 7,009 shares of Common Stock at a weighted average price of $92.19 per share. These shares were sold in multiple transactions at prices ranging from $91.59 to $92.54 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.

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 5,642,723 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 1,460,506 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 136,392 shares of Common Stock and 71,528 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: 0001048268-24-000036 · wk-form4_1707948528.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: 11,428,544

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 August 31, 2023.

F10 · price: Also on February 12, 2024, TCP 2 sold 2,278 shares of Common Stock at a weighted average price of $94.51 per share. These shares were sold in multiple transactions at prices ranging from $94.30 to $94.86 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 5,642,723 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 1,460,506 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 136,392 shares of Common Stock and 71,528 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: 0001048268-24-000036 · wk-form4_1707948528.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: 11,430,822

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 August 31, 2023.

F9 · price: Also on February 12, 2024, TCP 2 sold 14,058 shares of Common Stock at a weighted average price of $93.63 per share. These shares were sold in multiple transactions at prices ranging from $93.29 to $94.28 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 5,642,723 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 1,460,506 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 136,392 shares of Common Stock and 71,528 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: 0001048268-24-000036 · wk-form4_1707948528.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: 11,444,880

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 August 31, 2023.

F8 · price: Also on February 12, 2024, TCP 2 sold 8,067 shares of Common Stock at a weighted average price of $93.04 per share. These shares were sold in multiple transactions at prices ranging from $92.27 to $93.26 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 5,642,723 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 1,460,506 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 136,392 shares of Common Stock and 71,528 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: 0001048268-24-000036 · wk-form4_1707948528.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: 11,452,947

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 August 31, 2023.

F2 · price: On February 12, 2024, TCP 2 sold 3,768 shares of Common Stock at a weighted average price of $91.70 per share. These shares were sold in multiple transactions at prices ranging from $91.23 to $92.18, 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 5,642,723 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 1,460,506 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 136,392 shares of Common Stock and 71,528 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: 0001048268-24-000034 · wk-form4_1707776619.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: 11,456,715

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 August 31, 2023.

F11 · price: Also on February 9, 2024, TCP 2 sold 8,626 shares of Common Stock at a weighted average price of $91.52 per share. These shares were sold in multiple transactions at prices ranging from $91.26 to $92.02 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 5,642,723 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 1,495,786 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 136,392 shares of Common Stock and 71,528 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: 0001048268-24-000034 · wk-form4_1707776619.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: 11,465,341

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 August 31, 2023.

F10 · price: Also on February 9, 2024, TCP 2 sold 1,574 shares of Common Stock at a weighted average price of $90.93 per share. These shares were sold in multiple transactions at prices ranging from $90.26 to $91.25 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.

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 5,642,723 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 1,495,786 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 136,392 shares of Common Stock and 71,528 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: 0001048268-24-000034 · wk-form4_1707776619.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: 11,466,915

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 August 31, 2023.

F9 · price: On February 9, 2024, TCP 2 sold 1,300 shares of Common Stock at a weighted average price of $89.64 per share. These shares were sold in multiple transactions at prices ranging from $89.13 to $90.06 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 5,642,723 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 1,495,786 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 136,392 shares of Common Stock and 71,528 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: 0001048268-24-000034 · wk-form4_1707776619.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: 11,468,215

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 August 31, 2023.

F8 · price: Also on February 8, 2024, TCP 2 sold 1,817 shares of Common Stock at a weighted average price of $90.75 per share. These shares were sold in multiple transactions at prices ranging from $90.60 to $91.19 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 5,642,723 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 1,495,786 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 136,392 shares of Common Stock and 71,528 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.