MANSFIELD KEITH 4
4 · Business First Bancshares, Inc. · Filed Mar 3, 2026
Insider Transaction Report
Form 4
MANSFIELD KEITH
EVP&COO of b1Bank
Transactions
- Exercise/Conversion
COMMON STOCK
[F3][F1][F2]2026-03-01+1,926→ 83,339 total - Tax Payment
COMMON STOCK
[F1][F2]2026-03-01$27.30/sh−676$18,455→ 82,663 total - Exercise/Conversion
Restricted Stock Units
[F3]2026-03-01−1,926→ 7,634 total→ Common Stock (1,926 underlying) - Award
Restricted Stock Units
[F4][F5]2026-03-02+5,740→ 13,374 totalExercise: $0.00→ Common Stock (5,740 underlying)
Footnotes (5)
- [F1]Includes 3,776 shares of unvested restricted stock granted on February 1, 2024, which will vest on March 31, 2026. 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.
- [F2]Includes 27,000 shares held by the reporting person's investment retirement account.
- [F3]The reporting person received an award of 5,838 time-based restricted stock units on March 1, 2025, vesting in three substantially equal installments on the first, second, and third anniversary of the issuance date.
- [F4]Reflects the grant of 5,740 time-based restricted stock units granted to the reporting person on March 2, 2026, of which 1,913 shares will vest on March 2, 2027, 1,913 shares will vest on March 2, 2028, and the remaining 1,914 shares will vest on March 2, 2029. Each time-based restricted stock unit is economically equivalent to one share of common stock of the issuer.
- [F5]Includes: (a) 3,722 time-based restricted stock units granted to the reporting person on December 12, 2024, which will vest in two substantially equal installments on the second and third anniversary of the issuance date; (b) 3,912 time-based restricted stock units granted to the reporting person on March 1, 2025, which will vest in two substantially equal installments on the second and third anniversary of the issuance date; and (c) 5,740 time-based restricted stock units granted to the reporting person on March 2, 2026, which will vest in three substantially equal installments on the first, second, and third anniversary of the issuance date.
Signature
/s/ Heather Roemer, as attorney-in-fact for Keith Mansfield|2026-03-03