144 0001495394 XXXXXXXX LIVE 0001048268 IES Holdings, Inc. 001-13783 13131 DAIRY ASHFORD ROAD SUITE 500 HOUSTON TX 77478 7138601500 Koshkin Joe D Director common Charles Schwab & Co

3000 Schwab Way westlake TX 76262

5000 2212800.00 19854585 12/09/2025 Nasdaq Common 10/01/2015 Compensation Issuer N 876 10/01/2015 Equity compensation Common 01/26/2016 Compensation Issuer N 1072 01/26/2016 Equity compensation Common 04/01/2016 Compensation Issuer N 809 04/01/2016 Equity compensation Common 07/01/2016 Compensation Issuer N 956 07/01/2016 Equity compensation Common 11/07/2016 Compensation Issuer N 667 11/07/2016 Equity compensation Common 02/17/2017 Compensation Issuer N 620 02/17/2017 Equity compensation Y 12/09/2025 Joe Koshkin