Investar Holding Corporation Declares Quarterly Common and Preferred Stock Cash Dividends

Investar Holding Corporation (the "Company") (Nasdaq: ISTR ), the holding company of Investar Bank, National Association (the "Bank"), declared a quarterly cash dividend of $0.12 per share to holders of the Company's common stock. The dividend is payable on October 30, 2026 to shareholders of record as of September 30, 2026. This is the 52 nd quarterly dividend paid by the Company, which follows an uninterrupted 11 quarterly cash dividends paid by the Bank. Additionally, the Company declared a quarterly cash dividend of $16.25 per share, which is the full quarterly dividend of 1.625% based on the per annum rate of 6.5%, to holders of the Company's 6.5% Series A Non-Cumulative Perpetual Convertible Preferred Stock. The dividend is payable on October 1, 2026 to shareholders of record as of September 15, 2026.

Investar Holding Corporation, headquartered in Baton Rouge, Louisiana, provides full banking services, excluding trust services, through its wholly-owned banking subsidiary, Investar Bank, National Association. The Bank currently operates 36 branch locations serving Louisiana, Texas, and Alabama. At June 30, 2026, the Bank had 421 full-time equivalent employees and total assets of $3.9 billion.

This press release may include forward-looking statements as defined by the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based upon current expectations and assumptions about our business that are subject to a variety of risks and uncertainties that could cause the actual results to differ materially from those described in this press release. You should not rely on forward-looking statements as a prediction of future events. Additional information regarding factors that could cause actual results to differ materially from those discussed in any forward-looking statements are described in reports and registration statements we file with the SEC, including our Annual Report on Form 10-K and subsequent Quarterly Reports on Form 10-Q and Current Reports on Form 8-K, copies of which are available on the Investar website at www.investarbank.com . We disclaim any obligation to update any forward-looking statements or any changes in events, conditions or circumstances upon which any forward-looking statement may be based except as required by law.