0001437749-24-019725 4 1 20240131 20240607 20240607 D'Angelo John J 0001611432 4 34 001-36522 241030992 418 PECAN MEADOW DRIVE 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 D'ANGELO FORM 4 X0508 4 2024-01-31 0001602658 Investar Holding Corp ISTR 0001611432 D'Angelo John J C/O INVESTAR HOLDING CORPORATION 10500 COURSEY BLVD. BATON ROUGE LA 70816 1 1 Chief Executive Officer 0 Common Stock 2024-06-05 4 M 0 60000 14 A 274821 D Common Stock 2024-06-05 4 F 0 55607 15.60 D 219214 D Common Stock 2024-06-07 4 S 0 650 15.41 D 218564 D Common Stock 2024-01-31 4 L 0 2 17.90 A 2099 I Minor children Common Stock 30771 I 401(k) Common Stock 250 I Spouse Employee Stock Option 14 2024-06-05 4 M 0 60000 0 D 2024-06-30 Common Stock 60000 0 D Represents a "net exercise" of outstanding stock options. The Reporting Person received 4,393 shares of common stock on net exercise of an option to purchase 60,000 shares of common stock. The Company withheld 55,607 shares of common stock underlying the option to satisfy the exercise price and tax withholding obligations. Sales were undertaken by the Reporting Person for personal tax planning purposes, primarily related to tax obligations on the reported option exercise. The reported price is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $15.38 to $15.44 per share. The Reporting Person undertakes to provide to Investar Holding Corporation, any security holder of Investar Holding Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Reflects shares acquired by the Reporting Person under an automatic dividend reinvestment plan. Reporting of this acquisition was deferred under Rule 16a-6(a); however, because of the Reporting Person's sale of shares on June 7, 2024, the reporting of the acquisition is no longer deferred and is being reported on this Form 4 in accordance with Rule 16a-6(b). The option vested in six equal annual installments beginning on July 1, 2015 and is currently exercisable as to all 60,000 shares. /s/ John J. D'Angelo 2024-06-07