Baton Rouge, Louisiana March 10, 2021 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the Board of Directors and Shareholders of Investar Holding Corporation Opinion on the Financial Statements We have audited the accompanying consolidated balance sheet of Investar Holding Corporation (the Company) as of December 31, 2019, the related consolidated statements of income, comprehensive income, changes in stockholders' equity and cash flows for the years ended December 31, 2019 and 2018, and the related notes (collectively referred to as the “consolidated financial statements”).