Director Steven Gerard White's Equity Transactions in Business First Bancshares

This Form 4 filing reports equity transactions by Steven Gerard White, a director of Business First Bancshares, Inc. (BFST). On June 25, 2026, White received a grant of 998 time-based restricted stock units under the company's 2024 Equity Incentive Plan, which will fully vest on June 25, 2027. The following day, on June 26, 2026, 1,016 previously granted restricted stock units vested and were converted to common stock, resulting in White acquiring 1,016 shares of common stock at $0 cost. Following these transactions, White directly holds 14,930 shares of common stock and 998 unvested restricted stock units. Additionally, White serves as trustee for the William A. Robinson Private Foundation, which holds 29,749 shares of company common stock, though White disclaims beneficial ownership of these shares except to the extent of his pecuniary interest. The filing was signed by attorney-in-fact Heather Roemer on June 29, 2026.