X0306 4 2021-10-20 0001624322 Business First Bancshares, Inc. BFST 0001734775 JORDAN PHILIP 500 LAUREL STREET, SUITE 101 BATON ROUGE LA 70801 1 EVP&CBO of b1Bank Common Stock 2021-10-20 4 M 0 15000 12 A 60530 D Common Stock 2021-10-20 4 F 0 9508 25.30 D 51022 D Common Stock 2022-03-31 4 F 0 2614 24.33 D 48408 D Common Stock 6300 I By Jordan Family Holdings, LLC Stock Options (Right to Buy) 12 2021-10-20 4 M 0 15000 0 D 2021-10-20 Common Stock 15000 0 D Includes (a) 3,732 shares of unvested restricted stock granted on 2/1/2021, which will vest on 3/31/2023, and (b) 6,230 shares of unvested restricted stock granted on 2/1/2022, of which 3,114 shares will vest on 3/31/2023, and the remaining 3,116 shares will vest on 3/31/2024. Under the terms of the relevant restricted stock grants, the reported shares of unvested restricted stock are subject to forfeiture upon the occurrence of certain events. Includes 4,000 shares held by reporting person's IRA and units of employer stock fund through issuer's 401(k) plan equivalent to approximately 10,610 shares. Represents the holdings of Jordan Family Holdings, LLC of which the reporting person is a member. The reporting person disclaims beneficial ownership of registrant common stock held by Jordan Family Holdings, LLC except to the extent of his pecuniary interest. Stock Options (Right to Buy) vest in 11 equal installments beginning on the grant date, October 20, 2008, and ending October 20, 2018. /s/ Heather Roemer, as attorney-in-fact for Phillip Jordan 2022-04-04