X0508 4 2026-03-02 0001624322 Business First Bancshares, Inc. BFST 0002106698 Cummings George W. III 500 LAUREL STREET, SUITE 101 BATON ROUGE LA 70801 1 0 Common Stock 2026-03-02 4 S 0 200 27.80 D 338575 D Common Stock 2026-03-03 4 S 0 9800 27.42 D 328775 D Common Stock 3911 I By Spouse Includes 223,669 pledged shares of common stock of the issuer. /s/ Heather Roemer, as attorney-in-fact for George W. Cummings III 2026-03-04