IESC

SEC source: 0001408176-25-000004 · wk-form4_1751493988.xml · nonDerivative · entry 1

Gendell David B. · CIK 0001408176 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,472

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: 0001495394-25-000005 · wk-form4_1751493304.xml · nonDerivative · entry 1

Koshkin Joe D · CIK 0001495394 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,651

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: 0001048268-25-000091 · wk-form4_1751491032.xml · nonDerivative · entry 1

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,180

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: 0001048268-25-000085 · wk-form4_1751490367.xml · nonDerivative · entry 1

Janzen Kelly · CIK 0001642635 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47

F1 · security: Represents shares of Common Stock granted pursuant to the IES Holdings, Inc. ("IES") 2006 Equity Incentive Plan (as amended and restated) upon Ms. Janzen electing to receive common stock in lieu of cash or phantom stock units ("PSUs") for that portion of her retainer.

SEC source: 0001048268-25-000082 · wk-form4_1749846575.xml · nonDerivative · entry 3

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,915,554

F8 · shares: Represents shares of common stock gifted by TA.

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

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

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

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

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

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,917,554

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

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

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

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

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

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

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,919,709

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

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

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

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

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

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

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,923,318

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

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

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

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

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

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

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,930,040

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

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

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

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

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

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,942,084

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

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

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

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

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

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

SEC source: 0001048268-25-000052 · wk-form4_1743628756.xml · nonDerivative · entry 1

Koshkin Joe D · CIK 0001495394 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,554

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: 0001048268-25-000050 · wk-form4_1743628661.xml · nonDerivative · entry 1

Gendell David B. · CIK 0001408176 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,386

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: 0001048268-25-000048 · wk-form4_1743628552.xml · nonDerivative · entry 1

Fouts John Louis · CIK 0002039454 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,880

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. Fouts 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. Fouts 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: 0001048268-25-000046 · wk-form4_1743628419.xml · nonDerivative · entry 1

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,089

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: 0001048268-25-000044 · wk-form4_1743628250.xml · nonDerivative · entry 1

Baldock Jennifer A · CIK 0001281437 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,297

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: 0001048268-25-000036 · wk-form4_1739315196.xml · nonDerivative · entry 1

Gendell David B. · CIK 0001408176 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 88,231

F1 · security: The shares reported in this transaction represent a gift to a family trust.

SEC source: 0001048268-25-000011 · wk-form4_1735943341.xml · nonDerivative · entry 1

Koshkin Joe D · CIK 0001495394 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,380

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: 0001048268-25-000010 · wk-form4_1735943279.xml · nonDerivative · entry 1

Gendell David B. · CIK 0001408176 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128,231

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: 0001048268-25-000009 · wk-form4_1735943221.xml · nonDerivative · entry 1

Fouts John Louis · CIK 0002039454 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,570

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. Fouts 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. Fouts 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: 0001048268-25-000008 · wk-form4_1735943152.xml · nonDerivative · entry 1

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,925

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: 0001048268-25-000007 · wk-form4_1735943054.xml · nonDerivative · entry 1

Baldock Jennifer A · CIK 0001281437 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,135

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

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,957,184

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

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

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

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

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

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

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,957,654

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

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

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

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

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

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

SEC source: 0001048268-24-000156 · wk-form4_1734128420.xml · nonDerivative · entry 1

Cleveland Todd M · CIK 0001407402 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,790

F1 · shares: The shares reported in this transaction represent a gift to a charitable organization.

SEC source: 0001048268-24-000155 · wk-form4_1734127689.xml · nonDerivative · entry 1

McLauchlin Tracy · CIK 0001456922 · SVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,177

F1 · shares: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $253.02 to $253.50, inclusive. The reporting person undertakes to provide IES Holdings, Inc. ("IES"), any security holder of IES, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,958,900

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

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

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

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

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

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

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,959,080

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

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

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

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

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

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

SEC source: 0001048268-24-000150 · wk-form4_1733352178.xml · nonDerivative · entry 3

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,504

F1 · shares: Represents shares of Common Stock withheld to satisfy the tax obligation resulting from the vesting of the second 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: 0001048268-24-000150 · wk-form4_1733352178.xml · nonDerivative · entry 2

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,341

SEC source: 0001048268-24-000150 · wk-form4_1733352178.xml · nonDerivative · entry 1

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,290

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,971,289

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

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

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

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

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

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

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,973,651

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

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

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

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

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

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

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,974,368

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

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

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

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

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

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

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,985,952

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

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

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

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

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

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

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

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

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

TONTINE CAPITAL MANAGEMENT LLC · CIK 0001272374 · 10% owner

TONTINE MANAGEMENT LLC · CIK 0001268959 · 10% owner

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

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

Tontine Associates, LLC · CIK 0001491514 · 10% owner

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

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,984,845

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

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

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

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

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

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

SEC source: 0001048268-24-000146 · wk-form4_1732918717.xml · nonDerivative · entry 2

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 122,341

F2 · shares: On November 27, 2024, Mr. Simmes was granted an additional award of PSUs pursuant to the 2006 Equity Incentive Plan. The number of PSUs granted to Mr. Simmes on November 27, 2024 (the "Regular Time-Based PSUs") will vest upon the continued performance of services through the scheduled vesting date. The Regular Time-Based PSUs are scheduled to vest on the earlier of (i) December 15, 2027 and (ii) the date that the Issuer files its Annual Report on Form 10-K for its fiscal year ending September 30, 2027.

SEC source: 0001048268-24-000146 · wk-form4_1732918717.xml · nonDerivative · entry 1

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 121,444

F1 · shares: On November 27, 2024, Mr. Simmes 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 40,000 PSUs granted to Mr. Simmes are divided into two equal tranches and will vest upon the continued performance of services through the respective scheduled vesting dates. The first tranche of Special Time-Based PSUs is scheduled to vest on December 1, 2026 and the second tranche of Special Time-Based PSUs is scheduled to vest on December 1, 2027.

SEC source: 0001048268-24-000145 · wk-form4_1732918640.xml · nonDerivative · entry 2

McLauchlin Tracy · CIK 0001456922 · SVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,177

F2 · shares: On November 27, 2024, Ms. McLauchlin was granted an additional award of PSUs pursuant to the 2006 Equity Incentive Plan. The number of PSUs granted to Ms. Newman on November 27, 2024 (the "Regular Time-Based PSUs") will vest upon the continued performance of services through the scheduled vesting date. The Regular Time-Based PSUs are scheduled to vest on the earlier of (i) December 15, 2027 and (ii) the date that the Issuer files its Annual Report on Form 10-K for its fiscal year ending September 30, 2027.

SEC source: 0001048268-24-000145 · wk-form4_1732918640.xml · nonDerivative · entry 1

McLauchlin Tracy · CIK 0001456922 · SVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,585

F1 · shares: On November 27, 2024, Ms. McLauchlin 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 6,000 PSUs granted to Ms. McLauchlin are divided into two equal tranches and will vest upon the continued performance of services through the respective scheduled vesting dates. The first tranche of Special Time-Based PSUs is scheduled to vest on December 1, 2026 and the second tranche of Special Time-Based PSUs is scheduled to vest on December 1, 2027.

SEC source: 0001048268-24-000144 · wk-form4_1732918552.xml · nonDerivative · entry 3

Newman Mary K · CIK 0001858333 · VP, General Counsel & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,735.3

F3 · shares: On November 27, 2024, Ms. Newman was granted an additional award of PSUs pursuant to the 2006 Equity Incentive Plan. The number of PSUs granted to Ms. Newman on November 27, 2024 (the "Regular Time-Based PSUs") will vest upon the continued performance of services through the scheduled vesting date. The Regular Time-Based PSUs are scheduled to vest on the earlier of (i) December 15, 2027 and (ii) the date that the Issuer files its Annual Report on Form 10-K for its fiscal year ending September 30, 2027.

SEC source: 0001048268-24-000144 · wk-form4_1732918552.xml · nonDerivative · entry 2

Newman Mary K · CIK 0001858333 · VP, General Counsel & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,286.3

F2 · shares: On November 27, 2024, Ms. Newman 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 5,000 PSUs granted to Ms. Newman are divided into two equal tranches and will vest upon the continued performance of services through the respective scheduled vesting dates. The first tranche of Special Time-Based PSUs is scheduled to vest on December 1, 2026 and the second tranche of Special Time-Based PSUs is scheduled to vest on December 1, 2027.

SEC source: 0001048268-24-000144 · wk-form4_1732918552.xml · nonDerivative · entry 1

Newman Mary K · CIK 0001858333 · VP, General Counsel & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,286.3

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $286.00 to $286.97, inclusive. The reporting person undertakes to provide IES Holdings, Inc. ("IES"), any security holder of IES, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001048268-24-000141 · wk-form4_1732659030.xml · nonDerivative · entry 2

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,444

F2 · shares: Represents shares of Common Stock withheld to satisfy the tax obligation resulting from the vesting of the time- and performance-based phantom stock units granted to Mr. Simmes on December 3, 2021 pursuant to the 2006 Equity Incentive Plan.

SEC source: 0001048268-24-000141 · wk-form4_1732659030.xml · nonDerivative · entry 1

Simmes Matthew J · CIK 0001899288 · President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 86,850

F1 · shares: On December 3, 2021, Mr. Simmes was granted shares of time- and performance-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 represented a contractual right in respect of one share of the Issuer's Common Stock and would vest, if at all, upon the achievement of certain specified annual financial performance objectives and the continued performance of services through the scheduled vesting date. On November 22, 2024, upon the filing of the Issuer's Annual Report on Form 10-K for its fiscal year ended September 30, 2024, the performance and service criteria were determined to have been met, resulting in the vesting of 13,740 time- and performance-based PSUs under this award.

SEC source: 0001048268-24-000140 · wk-form4_1732658942.xml · nonDerivative · entry 2

Newman Mary K · CIK 0001858333 · VP, General Counsel & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,786.3

F2 · shares: Represents shares of Common Stock withheld to satisfy the tax obligation resulting from the vesting of the time- and performance-based PSUs granted to Ms. Newman on December 3, 2021 pursuant to the 2006 Equity Incentive Plan.

SEC source: 0001048268-24-000140 · wk-form4_1732658942.xml · nonDerivative · entry 1

Newman Mary K · CIK 0001858333 · VP, General Counsel & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,956.3

F1 · shares: On December 3, 2021, Ms. Newman was granted shares of time- and performance-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 represented a contractual right in respect of one share of the Issuer's Common Stock and would vest, if at all, upon the achievement of certain specified annual financial performance objectives and the continued performance of services through the scheduled vesting date. On November 22, 2024, upon the filing of the Issuer's Annual Report on Form 10-K for its fiscal year ended September 30, 2024, the performance and service criteria were determined to have been met, resulting in the vesting of 5,516 time- and performance-based PSUs under this award.

SEC source: 0001048268-24-000139 · wk-form4_1732658821.xml · nonDerivative · entry 2

McLauchlin Tracy · CIK 0001456922 · SVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 69,585

F2 · shares: Represents shares of Common Stock withheld to satisfy the tax obligation resulting from the vesting of the time- and performance-based PSUs granted to Ms. McLauchlin on December 3, 2021 pursuant to the 2006 Equity Incentive Plan.

SEC source: 0001048268-24-000139 · wk-form4_1732658821.xml · nonDerivative · entry 1

McLauchlin Tracy · CIK 0001456922 · SVP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,964

F1 · shares: On December 3, 2021, Ms. McLauchlin was granted shares of time- and performance-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 represented a contractual right in respect of one share of the Issuer's Common Stock and would vest, if at all, upon the achievement of certain specified annual financial performance objectives and the continued performance of services through the scheduled vesting date. On November 22, 2024, upon the filing of the Issuer's Annual Report on Form 10-K for its fiscal year ended September 30, 2024, the performance and service criteria were determined to have been met, resulting in the vesting of 8,587 time- and performance-based PSUs under this award.

SEC source: 0001048268-24-000128 · wk-form4_1727903280.xml · nonDerivative · entry 1

Fouts John Louis · CIK 0002039454 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,315

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. Fouts 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. Fouts 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: 0001048268-24-000127 · wk-form4_1727903203.xml · nonDerivative · entry 1

Koshkin Joe D · CIK 0001495394 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,237

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.