Simmons First National (SFNC) director reports 928-share RSU conversion

Rhea-AI Filing Summary

Simmons First National Corp. director Marty Casteel reported the vesting and conversion of restricted stock units into common shares. On January 2, 2026, 928 restricted stock units vested and converted into 928 shares of SFNC common stock at an exercise price of $0, reflected as a transaction code "M" for both the derivative units and the resulting shares. After this conversion, Casteel directly owned 216,318 shares of Simmons First National Corp. common stock. The filing does not show any open-market purchase or sale, only the routine settlement of equity awards into shares.

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

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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^*

Casteel Marty

(Last) (First) (Middle)

C/O SIMMONS FIRST NATIONAL CORP.

501 MAIN STREET

(Street)

PINE BLUFF AR 71601

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SIMMONS FIRST NATIONAL CORP [ SFNC ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
01/02/2026

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)
			Code	V	Amount	(A) or (D)	Price
SFNC Common Stock	01/02/2026		M		928	A	(1)	216,318	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
SFNC Common Stock	(1)	01/02/2026		M			928	(2)	(2)	SFNC Common Stock	928	$0	0	D

Explanation of Responses:

1. Restricted Stock Units convert into shares of SFNC common stock on a one-for-one basis.

2. The Restricted Stock Units vested on January 2, 2026.

	/s/ Natalie Gassiott, attorney-in-fact for Marty Casteel	01/06/2026
	** 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).
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FAQ

What insider transaction did SFNC director Marty Casteel report?

Marty Casteel reported the vesting and conversion of 928 restricted stock units into 928 shares of Simmons First National Corp. (SFNC) common stock on January 2, 2026, using transaction code "M".

Did Marty Casteel buy or sell SFNC shares on the open market in this Form 4?

No open-market buy or sell is shown. The Form 4 reports a code M transaction where 928 restricted stock units vested and converted into the same number of SFNC common shares at an exercise price of $0.

How many SFNC shares does Marty Casteel own after this reported transaction?

Following the reported conversion, Marty Casteel directly owned 216,318 shares of SFNC common stock, as stated in the filing.

What do the restricted stock unit footnotes in the SFNC Form 4 explain?

The footnotes state that restricted stock units convert into SFNC common stock on a one-for-one basis and that the restricted stock units vested on January 2, 2026.

What does transaction code "M" mean in this SFNC Form 4 filing?

Transaction code "M" indicates the exercise or conversion of a derivative security. Here, it reflects restricted stock units converting into 928 SFNC common shares at $0 per share.

Is Marty Casteel a director or officer of Simmons First National Corp. (SFNC)?

According to the filing, Marty Casteel is a director of Simmons First National Corp. and is not reported as an officer or 10% owner in this Form 4.