0001437749-24-001745 4 1 20240117 20240119 20240119 Lukinovich David J 0001611337 4 34 001-36522 24546065 18128 GREEN LAKES COURT BATON ROUGE LA 70810 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 LUKINOVICH FORM 4 X0508 4 2024-01-17 0001602658 Investar Holding Corp ISTR 0001611337 Lukinovich David J 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 20808 D Common Stock 569 I By adult son, Joshua Lukinovich. Common Stock 16651 I By Solomon's Portico LLC Common Stock 551 I By adult son, David Lukinovich Jr. Common Stock 572 I By minor daughter Common Stock 15296 I By spouse Common Stock 125 I By minor son Common Stock 564 I By adult daughter, Mary Lukinovich 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/ David J. Lukinovich 2024-01-19