X0306 4 2022-06-23 0001624322 Business First Bancshares, Inc. BFST 0001811639 Johnson Joseph Vernon 500 LAUREL STREET, SUITE 101 BATON ROUGE LA 70801 1 COMMON STOCK 2022-06-23 4 A 0 1182 21.15 A 225298 D COMMON STOCK 54848 I By Robert Barrett Johnson Trust COMMON STOCK 54848 I By Eric Paul Johnson Trust 2004 Reflects the grant of restricted stock to reporting person. The restricted stock fully vests on the earlier of (a) June 22, 2023, or (b) the day immediately prior to the next annual meeting of shareholders following the grant. /s/ Heather Roemer, as attorney-in-fact for J. Vernon Johnson 2022-06-27