0001437749-24-001743 4 1 20240117 20240119 20240119 Melara Julio A 0001982976 4 34 001-36522 24546052 18580 SANTA MARIA DRIVE BATON ROUGE LA 70809 Investar Holding Corp 0001602658 6022 02 Finance 271560715 LA 1231 10500 COURSEY BLVD THIRD FLOOR BATON ROUGE LA 70816 225-227-2222 10500 COURSEY BLVD THIRD FLOOR BATON ROUGE LA 70816 4 1 rdgdoc.xml MELARA FORM 4 X0508 4 2024-01-17 0001602658 Investar Holding Corp ISTR 0001982976 Melara Julio A C/O INVESTAR HOLDING CORPORATION 10500 COURSEY BLVD. BATON ROUGE LA 70816 1 0 Common Stock 2024-01-17 4 A 0 1918 0 A 8722 D Common Stock 2436 I 401(k) Grant of restricted stock units that convert into common stock on a one-for-one basis. Vesting occurs in equal increments on 1/17/2025 and 1/1/2026. /s/ Julio A. Melara 2024-01-19