IESC

SEC source: 0001048268-24-000034 · wk-form4_1707776619.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: 11,470,032

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 8, 2024, TCP 2 sold 4,593 shares of Common Stock at a weighted average price of $90.18 per share. These shares were sold in multiple transactions at prices ranging from $89.60 to $90.59, 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: 0001048268-24-000032 · wk-form4_1707430890.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: 11,474,625

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 7, 2024, TCP 2 sold 13,710 shares of Common Stock at a weighted average price of $90.06 per share. These shares were sold in multiple transactions at prices ranging from $89.56 to $90.53 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 1,513,696 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: 0001048268-24-000032 · wk-form4_1707430890.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: 11,488,335

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 7, 2024, TCP 2 sold 9,400 shares of Common Stock at a weighted average price of $88.91 per share. These shares were sold in multiple transactions at prices ranging from $88.49 to $89.47 inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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 1,513,696 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: 0001048268-24-000032 · wk-form4_1707430890.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: 11,497,735

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 6, 2024, TCP 2 sold 336 shares of Common Stock at a weighted average price of $86.61 per share. These shares were sold in multiple transactions at prices ranging from $86.49 to $86.69 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 1,513,696 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: 0001048268-24-000032 · wk-form4_1707430890.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: 11,498,071

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 6, 2024, TCP 2 sold 2,162 shares of Common Stock at a weighted average price of $85.94 per share. These shares were sold in multiple transactions at prices ranging from $85.49 to $86.25, 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 1,513,696 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: 0001048268-24-000030 · wk-form4_1707258299.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: 11,500,233

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 5, 2024, TCP 2 sold 3,700 shares of Common Stock at a weighted average price of $85.60 per share. These shares were sold in multiple transactions at prices ranging from $85.49 to $86.35 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 1,539,304 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: 0001048268-24-000030 · wk-form4_1707258299.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: 11,503,933

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 2, 2024, TCP 2 sold 3,300 shares of Common Stock at a weighted average price of $91.68 per share. These shares were sold in multiple transactions at prices ranging from $91.50 to $92.00 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 5,642,723 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 1,539,304 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: 0001048268-24-000030 · wk-form4_1707258299.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: 11,507,233

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 1,539,304 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: 0001048268-24-000030 · wk-form4_1707258299.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: 11,507,633

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 2, 2024, TCP 2 sold 12,600 shares of Common Stock at a weighted average price of $85.85 per share. These shares were sold in multiple transactions at prices ranging from $85.49 to $86.28, 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 1,539,304 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: 0001048268-24-000020 · wk-form4_1706134597.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: 11,520,233

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: On January 23, 2024, TCP 2 sold 300 shares of Common Stock at a weighted average price of $85.70 per share. These shares were sold in multiple transactions at prices ranging from $85.49 to $85.92, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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 1,559,304 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: 0001048268-24-000020 · wk-form4_1706134597.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: 11,520,533

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 January 22, 2024, TCP 2 sold 8,200 shares of Common Stock at a weighted average price of $85.76 per share. These shares were sold in multiple transactions at prices ranging from $85.49 to $86.11, 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 1,559,304 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: 0001048268-24-000018 · wk-form4_1704924624.xml · nonDerivative · entry 1

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,028

F1 · shares: Represents shares of Common Stock withheld to satisfy the tax obligation resulting from the vesting of a 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: 0001048268-24-000010 · wk-form4_1704322423.xml · nonDerivative · entry 1

LEYKUM ELIZABETH · CIK 0001560698 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,503

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: 0001048268-24-000008 · wk-form4_1704322301.xml · nonDerivative · entry 1

Koshkin Joe D · CIK 0001495394 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,651

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: 0001048268-24-000006 · wk-form4_1704322190.xml · nonDerivative · entry 1

Gendell David B. · CIK 0001408176 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,583

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: 0001048268-24-000004 · wk-form4_1704322047.xml · nonDerivative · entry 1

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 142,581

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: 0001048268-24-000002 · wk-form4_1704321671.xml · nonDerivative · entry 1

Baldock Jennifer A · CIK 0001281437 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,456

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: 0001048268-23-000127 · wk-form4_1703725796.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: 11,528,733

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 December 22, 2023, TCP 2 sold 1,648 shares of Common Stock at a weighted average price of $82.65 per share. These shares were sold in multiple transactions at prices ranging from $82.39 to $83.19, 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 1,567,804 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: 0001048268-23-000127 · wk-form4_1703725796.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: 11,530,381

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 December 22, 2023, TCP 2 sold 6,966 shares of Common Stock at a weighted average price of $81.94 per share. These shares were sold in multiple transactions at prices ranging from $81.39 to $82.38, 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 1,567,804 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: 0001048268-23-000124 · wk-form4_1703284400.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: 11,537,347

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 December 21, 2023, TCP 2 sold 1,300 shares of Common Stock at a weighted average price of $83.16 per share. These shares were sold in multiple transactions at prices ranging from $83.03 to $83.28, 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 1,576,418 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: 0001048268-23-000124 · wk-form4_1703284400.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: 11,538,647

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: On December 21, 2023, TCP 2 sold 3,900 shares of Common Stock at a weighted average price of $82.39 per share. These shares were sold in multiple transactions at prices ranging from $82.01 to $82.97, 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 1,576,418 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: 0001048268-23-000124 · wk-form4_1703284400.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: 11,542,547

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 December 20, 2023, TCP 2 sold 2,258 shares of Common Stock at a weighted average price of $85.17 per share. These shares were sold in multiple transactions at prices ranging from $84.98 to $85.43, 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 1,576,418 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: 0001048268-23-000124 · wk-form4_1703284400.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: 11,544,805

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 December 20, 2023, TCP 2 sold 3,811 shares of Common Stock at a weighted average price of $84.46 per share. These shares were sold in multiple transactions at prices ranging from $83.96 to $84.94, 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 1,576,418 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: 0001048268-23-000124 · wk-form4_1703284400.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: 11,548,616

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 December 20, 2023, TCP 2 sold 2,150 shares of Common Stock at a weighted average price of $83.54 per share. These shares were sold in multiple transactions at prices ranging from $82.96 to $83.94, 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 1,576,418 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: 0001048268-23-000122 · wk-form4_1703112539.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: 11,550,766

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 December 19, 2023, TCP 2 sold 6,993 shares of Common Stock at a weighted average price of $83.71 per share. These shares were sold in multiple transactions at prices ranging from $83.30 to $84.02, 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 1,589,837 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: 0001048268-23-000122 · wk-form4_1703112539.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: 11,557,759

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: On December 19, 2023, TCP 2 sold 4,150 shares of Common Stock at a weighted average price of $82.85 per share. These shares were sold in multiple transactions at prices ranging from $82.28 to $83.26, 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 1,589,837 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: 0001048268-23-000122 · wk-form4_1703112539.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: 11,561,909

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 1,589,837 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: 0001048268-23-000122 · wk-form4_1703112539.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: 11,562,009

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 December 18, 2023, TCP 2 sold 1,202 shares of Common Stock at a weighted average price of $84.45 per share. These shares were sold in multiple transactions at prices ranging from $83.99 to $84.95, 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 1,589,837 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: 0001048268-23-000122 · wk-form4_1703112539.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: 11,563,211

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 December 18, 2023, TCP 2 sold 2,400 shares of Common Stock at a weighted average price of $83.11 per share. These shares were sold in multiple transactions at prices ranging from $82.73 to $83.50, 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.

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 1,589,837 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: 0001048268-23-000122 · wk-form4_1703112539.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: 11,565,611

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 December 18, 2023, TCP 2 sold 4,875 shares of Common Stock at a weighted average price of $82.16 per share. These shares were sold in multiple transactions at prices ranging from $81.70 to $82.68, 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 1,589,837 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: 0001048268-23-000119 · wk-form4_1702939941.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: 11,570,486

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.

F12 · price: Also on December 15, 2023, TCP 2 sold 2,547 shares of Common Stock at a weighted average price of $85.62 per share. These shares were sold in multiple transactions at prices ranging from $85.62 to $85.81, 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 1,609,557 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: 0001048268-23-000119 · wk-form4_1702939941.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: 11,573,033

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 December 15, 2023, TCP 2 sold 263 shares of Common Stock at a weighted average price of $85.47 per share. These shares were sold in multiple transactions at prices ranging from $84.61 to $85.53, 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 1,609,557 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: 0001048268-23-000119 · wk-form4_1702939941.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: 11,573,296

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: On December 15, 2023, TCP 2 sold 5,999 shares of Common Stock at a weighted average price of $84.06 per share. These shares were sold in multiple transactions at prices ranging from $83.61 to $84.56, 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 1,609,557 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: 0001048268-23-000119 · wk-form4_1702939941.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: 11,579,295

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 December 14, 2023, TCP 2 sold 9,900 shares of Common Stock at a weighted average price of $85.92 per share. These shares were sold in multiple transactions at prices ranging from $85.49 to $86.24, 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 5,642,723 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 1,609,557 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: 0001048268-23-000119 · wk-form4_1702939941.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: 11,589,195

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 December 14, 2023, TCP 2 sold 3,155 shares of Common Stock at a weighted average price of $84.84 per share. These shares were sold in multiple transactions at prices ranging from $84.39 to $85.35, 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 1,609,557 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: 0001048268-23-000119 · wk-form4_1702939941.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: 11,592,350

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 December 14, 2023, TCP 2 sold 1,650 shares of Common Stock at a weighted average price of $83.82 per share. These shares were sold in multiple transactions at prices ranging from $83.20 to $84.08, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

F4 · ownership.nature: TCP directly owns 5,642,723 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 1,609,557 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: 0001048268-23-000120 · wk-form4_1702945428.xml · nonDerivative · entry 1

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 142,317

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $85.80 to $86.19, 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 ranges set forth in this footnote.

SEC source: 0001048268-23-000116 · wk-form4_1702592332.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: 11,594,000

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.

F12 · price: Also on December 13, 2023, TCP 2 sold 1,832 shares of Common Stock at a weighted average price of $84.77 per share. These shares were sold in multiple transactions at prices ranging from $84.54 to $85.11, 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 1,633,071 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: 0001048268-23-000116 · wk-form4_1702592332.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: 11,595,832

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 December 13, 2023, TCP 2 sold 9,531 shares of Common Stock at a weighted average price of $84.00 per share. These shares were sold in multiple transactions at prices ranging from $83.54 to $84.53, 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 1,633,071 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: 0001048268-23-000116 · wk-form4_1702592332.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: 11,605,363

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: On December 13, 2023, TCP 2 sold 2,298 shares of Common Stock at a weighted average price of $82.97 per share. These shares were sold in multiple transactions at prices ranging from $82.49 to $83.42, 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 1,633,071 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: 0001048268-23-000116 · wk-form4_1702592332.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: 11,607,661

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 December 12, 2023, TCP 2 sold 624 shares of Common Stock at a weighted average price of $83.49 per share. These shares were sold in multiple transactions at prices ranging from $83.49 to $83.53, 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 1,633,071 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: 0001048268-23-000116 · wk-form4_1702592332.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: 11,608,285

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 December 12, 2023, TCP 2 sold 4,864 shares of Common Stock at a weighted average price of $82.64 per share. These shares were sold in multiple transactions at prices ranging from $82.40 to $83.06, 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 1,633,071 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: 0001048268-23-000116 · wk-form4_1702592332.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: 11,613,149

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by TCP 2 (as defined herein) on August 31, 2023.

F2 · price: On December 12, 2023, TCP 2 sold 8,286 shares of Common Stock at a weighted average price of $81.77 per share. These shares were sold in multiple transactions at prices ranging from $81.33 to $82.31, 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 1,633,071 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: 0001048268-23-000114 · wk-form4_1702506799.xml · nonDerivative · entry 1

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 148,472

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.73 to $83.62, 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 ranges set forth in this footnote.

SEC source: 0001048268-23-000107 · wk-form4_1702073773.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: 11,621,435

F1 · shares: On December 7, 2023, Mr. Gendell was granted an award of Phantom Stock Units ("PSUs") pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated (the "2006 Equity Incentive Plan"). Each PSU represents a contractual right in respect of one share of the Issuer's Common Stock. The 4,134 PSUs granted to Mr. Gendell on December 7, 2023 (the "Time-Based PSUs") will vest upon the continued performance of services through the scheduled vesting date. The Time-Based PSUs are scheduled to vest on the earlier of (i) December 15, 2026 and (ii) the date that the Issuer files its Annual Report on Form 10-K for its fiscal year ending September 30, 2026.

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 1,660,506 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 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: 0001048268-23-000105 · wk-form4_1702073609.xml · nonDerivative · entry 3

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 101,038

F3 · shares: On December 7, 2023, Mr. Simmes was granted 25,000 time-based PSUs pursuant to the 2006 Equity Incentive Plan. Each PSU represents a contractual right in respect of one share of the Issuer's Common Stock and are scheduled to vest on December 7, 2026, subject to the continued performance of services through the scheduled vesting date.

SEC source: 0001048268-23-000105 · wk-form4_1702073609.xml · nonDerivative · entry 2

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,038

F2 · shares: On December 7, 2023, Mr. Simmes was granted 5,612 time-based PSUs pursuant to the 2006 Equity Incentive Plan. Each PSU represents a contractual right in respect of one share of the Issuer's Common Stock and are scheduled to vest on December 7, 2026, subject to the continued performance of services through the scheduled vesting date.

SEC source: 0001048268-23-000105 · wk-form4_1702073609.xml · nonDerivative · entry 1

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,426

F1 · shares: On December 7, 2023, Mr. Simmes was granted 3,507 time-based Phantom Stock Units ("PSUs") pursuant to the IES Holdings, Inc. 2006 Equity Incentive Plan, as amended and restated (the "2006 Equity Incentive Plan"). Each PSU represents a contractual right in respect of one share of the Issuer's Common Stock and will vest upon the continued performance of services through the scheduled vesting date. The PSUs are scheduled to vest on the earlier of (i) December 15, 2026 and (ii) the date that the Issuer files its Annual Report on Form 10-K for its fiscal year ending September 30, 2026.

SEC source: 0001048268-23-000104 · wk-form4_1702073439.xml · nonDerivative · entry 3

McLauchlin Tracy · CIK 0001456922 · SVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,490

F3 · shares: On December 7, 2023, Ms. McLauchlin was granted 1,987 time-based PSUs pursuant to the 2006 Equity Incentive Plan. Each PSU represents a contractual right in respect of one share of the Issuer's Common Stock and will vest upon the continued performance of services through the scheduled vesting date. The PSUs are scheduled to vest on the earlier of (i) December 15, 2026 and (ii) the date that the Issuer files its Annual Report on Form 10-K for its fiscal year ending September 30, 2026.

SEC source: 0001048268-23-000104 · wk-form4_1702073439.xml · nonDerivative · entry 2

McLauchlin Tracy · CIK 0001456922 · SVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,503

F2 · shares: Represents shares of Common Stock withheld to satisfy the tax obligation resulting from the vesting of the PSUs granted to Ms. McLauchlin on December 7, 2020 pursuant to the 2006 Equity Incentive Plan.