Results of Operations and Financial Condition On July 20, 2026, Investar Holding Corporation (the “Company”), the holding company of Investar Bank, National Association (the “Bank”), issued a press release reporting second quarter 2026 results and posted on its website its second quarter 2026 earnings release and investor presentation. The materials contain forward-looking statements regarding the Company and include a cautionary note identifying important factors that could cause actual resu…

The company entered into new employment and salary continuation agreements with existing executives.

Changes in Registrant's Certifying Accountant (a) Dismissal of Previous Independent Registered Public Accounting Firm On June 17, 2026, Investar Holding Corporation (the “Company”), through and with the approval of the audit committee of the board of directors of the Company (the “Audit Committee”), dismissed BDO USA, P.C. (“BDO”) as the Company’s independent registered public accounting firm. Prior to BDO’s engagement, the Company’s financial statements were audited by HORNE LLP (“Horne”). O…

Approval of a long-term incentive compensation plan by shareholders.

Results of Operations and Financial Condition On April 20, 2026, Investar Holding Corporation (the “Company”), the holding company of Investar Bank, National Association (the “Bank”), issued a press release reporting first quarter 2026 results and posted on its website its first quarter 2026 earnings release and investor presentation. The materials contain forward-looking statements regarding the Company and include a cautionary note identifying important factors that could cause actual resul…

Results of Operations and Financial Condition On January 22, 2026, Investar Holding Corporation (the “Company”), the holding company of Investar Bank, National Association (the “Bank”), issued a press release reporting fourth quarter 2025 results and posted on its website its fourth quarter 2025 earnings release and investor presentation. The materials contain forward-looking statements regarding the Company and include a cautionary note identifying important factors that could cause actual r…

Completion of Acquisition or Disposition of Assets Effective as of January 1, 2026, Investar Holding Corporation (“Investar”), the holding company for Investar Bank, National Association (“Investar Bank”), completed its previously announced acquisition of Wichita Falls Bancshares, Inc. (“WFB”), the holding company for First National Bank. The acquisition was completed in accordance with the previously announced Agreement and Plan of Merger, dated July 1, 2025, by and between Investar and WFB…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant As a result of and upon the completion of the Merger, effective January 1, 2026, Investar assumed WFB’s obligations with respect to an aggregate principal amount of $9.3 million of junior subordinated debentures (the “Debentures”) underlying $9.0 million in aggregate liquidation amount of trust preferred securities, comprised of (i) $6,186,000 in aggregate principal amount issued…

Other Events On January 2, 2026, Investar issued the press release, a copy of which is attached hereto as Exhibit 99.1 and incorporated herein by reference, announcing the completion of its acquisition of WFB.

Director — David Flack and James Dunkerley: Two new directors were appointed to the board of directors of Investar and its bank.

Executive Vice President and Chief Financial Officer — John R. Campbell: Mr. Campbell's existing role and responsibilities were formalized with new agreements, including an Employment Agreement, Salary Continuation Agreement, and amendments to a Split Dollar Life Insurance Agreement.

Changes in Registrant's Certifying Accountant On November 1, 2025, the partners and professional staff of HORNE LLP (“Horne”), which was engaged as the independent registered public accounting firm of the registrant, Investar Holding Corporation (the “Company”), joined BDO USA, P.C. (“BDO”). As a result of this transaction, Horne resigned as the Company’s independent registered public accounting firm on November 1, 2025. On November 3, 2025, following the resignation of Horne, the Company, th…

Other Events On October 28, 2025, during an open trading window, John J. D’Angelo, President and Chief Executive Officer of the Company, adopted a prearranged stock trading plan (the “Plan”) to exercise Company stock options that are set to expire in March 2026 and sell a portion of the acquired stock. This plan was adopted in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended, and the Company’s Insider Trading Policy. The Plan becomes effective on January 26, 2…

Results of Operations and Financial Condition On October 20, 2025, Investar Holding Corporation (the “Company”), the holding company of Investar Bank, National Association (the “Bank”), issued a press release reporting third quarter 2025 results and posted on its website its third quarter 2025 earnings release and investor presentation. The materials contain forward-looking statements regarding the Company and include a cautionary note identifying important factors that could cause actual res…

Results of Operations and Financial Condition On July 21, 2025, Investar Holding Corporation (the “Company”), the holding company of Investar Bank, National Association (the “Bank”), issued a press release reporting second quarter 2025 results and posted on its website its second quarter 2025 earnings release and investor presentation. The materials contain forward-looking statements regarding the Company and include a cautionary note identifying important factors that could cause actual resu…

Entry into a Material Definitive Agreement Agreement and Plan of Merger with Wichita Falls Bancshares, Inc. On July 1, 2025, Investar Holding Corporation (“Investar”), the holding company for Investar Bank, National Association, Baton Rouge, Louisiana (“Investar Bank”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Wichita Falls Bancshares, Inc. (“WFB”), the holding company for First National Bank, Wichita Falls, Texas. The Merger Agreement provides for the merger…

Regulation FD Disclosure. On July 1, 2025, Investar and Wichita Falls issued a joint press release announcing the execution of the Merger Agreement, and Investar announced the Private Placement. A copy of the press release is furnished as Exhibit 99.1. On July 1, 2025, Investar issued an investor presentation regarding the matters described in

Unregistered Sales of Equity Securities. The information contained in Items 1.01 (under the heading “Private Placement of Preferred Stock”), 3.03 and 5.03 of this Current Report on Form 8-K is incorporated by reference into this

Material Modification to Rights of Security Holders. On June 30, 2025, Investar filed Articles of Amendment to its Restated Articles of Incorporation (the “Articles of Amendment”) with the Louisiana Secretary of State, which became effective on June 30, 2025, establishing the relative preferences, rights and limitations of the Series A Preferred Stock, having a liquidation preference of $1,000 per share. The Articles of Amendment were filed in connection with the Private Placement, as describ…

Results of Operations and Financial Condition On April 21, 2025, Investar Holding Corporation (the “Company”), the holding company of Investar Bank, National Association (the “Bank”), issued a press release reporting first quarter 2025 results and posted on its website its first quarter 2025 earnings release and investor presentation. The materials contain forward-looking statements regarding the Company and include a cautionary note identifying important factors that could cause actual resul…

Results of Operations and Financial Condition On January 23, 2025, Investar Holding Corporation (the “Company”), the holding company of Investar Bank, National Association (the “Bank”), issued a press release reporting fourth quarter 2024 results and posted on its website its fourth quarter 2024 earnings release and investor presentation. The materials contain forward-looking statements regarding the Company and include a cautionary note identifying important factors that could cause actual r…

Director — Anita M. Fontenot: Ms. Fontenot resigned from the Board of Directors.

Results of Operations and Financial Condition. On October 21, 2024, Investar Holding Corporation (the “Company”), the holding company of Investar Bank, National Association (the “Bank”), issued a press release reporting third quarter 2024 results and posted on its website its third quarter 2024 earnings release and investor presentation. The materials contain forward-looking statements regarding the Company and include a cautionary note identifying important factors that could cause actual re…

Director — Scott Ginn: Appointment of Scott Ginn as a director and member of the Audit Committee.

Results of Operations and Financial Condition. On July 22, 2024, Investar Holding Corporation (the “Company”), the holding company of Investar Bank, National Association (the “Bank”), issued a press release reporting second quarter 2024 results and posted on its website its second quarter 2024 earnings release and investor presentation. The materials contain forward-looking statements regarding the Company and include a cautionary note identifying important factors that could cause actual res…