0001602658-21-000019 4 1 20210120 20210122 20210122 Lukinovich David J 0001611337 4 34 001-36522 21544091 18128 GREEN LAKES COURT 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 wf-form4_161132753696018.xml FORM 4 X0306 4 2021-01-20 0 0001602658 Investar Holding Corp ISTR 0001611337 Lukinovich David J C/O INVESTAR HOLDING CORPORATION 10500 COURSEY BLVD. BATON ROUGE LA 70816 1 0 0 0 COMMON STOCK 2021-01-20 4 A 0 1691 0 A 15907 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 COMMON STOCK 551 I By adult son, David Lukinovich Grant of restricted stock units that convert into common stock on a one-for-one basis. Vesting occurs in equal increments on 1/1/2022 and 1/1/2023. /s/David J. Lukinovich 2021-01-22