X0306 4 2022-04-28 0001624322 Business First Bancshares, Inc. BFST 0001736530 WHITE STEVEN GERARD 500 LAUREL STREET, SUITE 101 BATON ROUGE LA 70801 1 COMMON STOCK 2022-04-28 4 A 0 780 23.08 A 8499 D COMMON STOCK 36749 I By William A. Robinson Trust Reflects the grant of restricted stock to reporting person. The restricted stock fully vests on May 31, 2022. Represents the holdings of William A. Robinson Private Foundation, of which the reporting person is the trustee. The reporting person disclaims beneficial ownership of registrant common stock held by William A. Robinson Private Foundation except to the extent of his pecuniary interest. /s/ Heather Roemer, as attorney-in-fact for Steven G. White 2022-05-02