0001437749-24-010947 4 1 20240401 20240403 20240403 Martin Jeffrey Wayne 0001891509 4 34 001-36522 24820664 10500 COURSEY BLVD BATON ROUGE LA 70816 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 MARTIN FORM 4 X0508 4 2024-04-01 0001602658 Investar Holding Corp ISTR 0001891509 Martin Jeffrey Wayne C/O INVESTAR HOLDING CORPORATION 10500 COURSEY BLVD. BATON ROUGE LA 70816 1 Chief Credit Officer 0 Common Stock 2024-04-01 4 F 0 714 16.35 D 12405 D Common Stock 2024-04-01 4 A 0 4685 0 A 17090 D Common Stock 4889 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 the anniversary dates for the following five years. /s/ Jeffrey W. Martin 2024-04-03