IES (IESC) 10-K 2023 FY Annual report

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with this Annual Report of IES Holdings, Inc. (the “Company”) on Form 10-K for the period ending September 30, 2023 (the “Report”), I, Jeffrey L. Gendell, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: December 7, 2023	By:	/s/ JEFFREY L. GENDELL
		Jeffrey L. Gendell
		Chief Executive Officer as Principal Executive Officer