144 0001447591 XXXXXXXX LIVE 0001606163 LIMBACH HOLDINGS INC 001-36541 797 Commonwealth Drive Warrendale PA 15086 4123592100 JAYME BROOKS Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

5613 560009.01 11679391 04/24/2026 NASDAQ Common 01/01/2025 Restricted Stock Units Issuer N 5613 01/01/2025 N/A N 10b5-1 Sales for JAYME BROOKS

797 Commonwealth Drive Warrendale PA 15086

Common 04/13/2026 5703 487189.61 10b5-1 Sales for JAYME BROOKS

797 Commonwealth Drive Warrendale PA 15086

Common 04/09/2026 841 71577.51 10b5-1 Sales for JAYME BROOKS

797 Commonwealth Drive Warrendale PA 15086

Common 04/08/2026 3366 286763.68 10b5-1 Sales for JAYME BROOKS

797 Commonwealth Drive Warrendale PA 15086

Common 03/17/2026 9910 778551.40 04/24/2026 12/16/2025 /s/ Jayme Brooks