Matthew J. Simmes - 21 Nov 2025 Form 4 Insider Report for IES Holdings, Inc. (IESC)

Role: President and CEO
Signature: /s/ Mary K. Newman, Attorney-in-Fact
Issuer symbol: IESC
Transactions as of: 21 Nov 2025
Transactions value $: $2,328,104
Form type: 4
Date filed: 25 Nov 2025, 17:04
Previous filing: 08 Aug 2025
Next filing: 28 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Simmes Matthew J	President and CEO	13131 DAIRY ASHFORD ROAD, SUITE 500, SUGAR LAND	/s/ Mary K. Newman, Attorney-in-Fact	2025-11-25	0001899288

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	IESC	Common Stock	Award	$5.26M	+14.2K	+13.96%	$371.19	116K	21 Nov 2025	Direct	F1
transaction	IESC	Common Stock	Tax liability	-$2.93M	-7.9K	-6.83%	$371.19	108K	21 Nov 2025	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On December 6, 2022, Mr. Simmes was granted 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 21, 2025, upon the filing of the Issuer's Annual Report on Form 10-K for its fiscal year ended September 30, 2025, the performance and service criteria were determined to have been met, resulting in the vesting of 14,172 performance-based PSUs under this award.
F2	Represents shares of Common Stock withheld to satisfy the tax obligation resulting from the vesting of the time- and performance-based PSUs granted to Mr. Simmes on December 6, 2022 pursuant to the 2006 Equity Incentive Plan.

Content

On December 6, 2022, Mr. Simmes was granted 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 21, 2025, upon the filing of the Issuer's Annual Report on Form 10-K for its fiscal year ended September 30, 2025, the performance and service criteria were determined to have been met, resulting in the vesting of 14,172 performance-based PSUs under this award.

Represents shares of Common Stock withheld to satisfy the tax obligation resulting from the vesting of the time- and performance-based PSUs granted to Mr. Simmes on December 6, 2022 pursuant to the 2006 Equity Incentive Plan.