0001437749-23-001467 4 1 20230118 20230120 20230120 Boyce Robert M Sr 0001611425 4 34 001-36522 23542062 18410 S MISSION HILLS AVENUE BATON ROUGE LA 70810 Investar Holding Corp 0001602658 6022 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 ROBERT BOYCE FORM 4 X0306 4 2023-01-18 0001602658 Investar Holding Corp ISTR 0001611425 Boyce Robert M Sr C/O INVESTAR HOLDING CORPORATION 10500 COURSEY BLVD. BATON ROUGE LA 70816 1 Common Stock 2023-01-18 4 A 0 1935 0 A 58091 D Grant of restricted stock units that convert into common stock on a one-for-one basis. Vesting occurs in equal increments on 1/18/2024 and 1/1/2025. /s/ Robert M. Boyce, Sr. 2023-01-20