SEC FORM 4

SEC FORM 4 SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

ROBERTSON GREG

(Last)

(First)

(Middle)

500 LAUREL STREET, SUITE 101

(Street)

BATON ROUGE

70801

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
Business First Bancshares, Inc. [ BFST ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	EVP and CFO

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
COMMON STOCK	03/01/2026		M		1,926	A	⁽²⁾	71,092⁽¹⁾	D
COMMON STOCK	03/01/2026		F		527	D	$27.3	70,565⁽¹⁾	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽²⁾	03/01/2026		M			1,926	⁽²⁾	⁽²⁾	Common Stock	1,926	⁽²⁾	7,634	D
Restricted Stock Units	$0	03/02/2026		A		1,148⁽³⁾		⁽³⁾	⁽³⁾	Common Stock	1,148	⁽³⁾	8,782	D
Restricted Stock Units	$0	03/02/2026		A		4,592⁽⁴⁾		⁽⁴⁾	⁽⁴⁾	Common Stock	4,592	⁽⁴⁾	13,374⁽⁵⁾	D

Explanation of Responses:

1. 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.

2. The reporting person received an award of 5,838 time-based restricted stock units granted on March 1, 2025, vesting in three substantially equal installments on the first, second, and third anniversary of the issuance date.

3. Reflects the grant of 1,148 time-based restricted stock units granted to the reporting person on March 2, 2026, of which 382 shares will vest on March 2, 2027, 382 shares will vest on March 2, 2028, and the remaining 384 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.

4. Reflects the grant of 4,592 time-based restricted stock units granted to the reporting person on March 2, 2026, of which 1,530 shares will vest on March 2, 2027, 1,530 shares will vest on March 2, 2028, and the remaining 1,532 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. The reporting person has irrevocably elected to defer the reported securities under the b1BANK Deferred Compensation Plan (the "Deferred Compensation Plan"). In accordance with the Deferred Compensation Plan, the reporting person will receive a lump sum cash distribution in an amount equal to the vested securities deferred under the Deferred Compensation Plan, plus any earnings or losses attributable thereto, on the first business day following the month in which the reporting person's separation of service, death, or disability occurs.

5. 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; (c) 1,148 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; and (d) 4,592 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.

	/s/ Heather Roemer, as attorney-in-fact for Gregory Robertson	03/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

EVP and CFO Robertson Greg converted options into 1,926 shares and covered exercise/tax liability with 527 shares, increasing direct ownership by 2% to 70,565 units (SEC Form 4)

Sign up free to keep reading