Southside Bancshares (SBSI) CCO gets stock award and withholds shares for taxes

Rhea-AI Filing Summary

Southside Bancshares, Inc. CCO Arnold T. L. Jr reported routine equity compensation activity in company common stock. On March 17, 2026, he acquired 1,328 shares at no cost as a grant/award tied to performance-based restricted stock units that were earned based on ROATCE goals and his continued employment. On the same date, 322 shares were disposed of at $29.94 per share to cover tax withholding obligations, a non-market transaction. Following these entries, he directly owns 22,517 common shares and has an additional 1,928 shares held indirectly through an ESOP, indicating a largely unchanged and modestly increased long-term stake.

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
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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^*

Arnold T L Jr

(Last) (First) (Middle)

1201 S BECKHAM

(Street)

TYLER TEXAS 75701

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SOUTHSIDE BANCSHARES INC [ SBSI ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/17/2026

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

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

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

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
Common Stock	03/17/2026		A		1,328(1)	A	$0	22,839	D
Common Stock	03/17/2026		F		322	D	$29.94	22,517	D
Common Stock								1,928	I	ESOP

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

Explanation of Responses:

1. Reflects the settlement of performance-based restricted stock units ("PSUs") granted to the reporting person on February 2, 2023, such PSUs were earned based on achievement of goals related to ROATCE and the reporting person's continued employment with the Company.

Remarks:

	Lindsey Bibby Bailes, attorney in fact	03/18/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider stock transactions did SBSI CCO Arnold T. L. Jr report?

Arnold T. L. Jr reported a stock award and related tax withholding. He received 1,328 Southside Bancshares common shares as a grant and had 322 shares withheld at $29.94 each to satisfy tax obligations, leaving mainly unchanged overall ownership.

Was the SBSI insider transaction by the CCO a market buy or sell?

The Form 4 shows no open-market buying or selling by the CCO. Shares were acquired through a performance-based stock award and 322 shares were disposed of solely to cover tax liabilities, rather than as discretionary market sales.

How many Southside Bancshares (SBSI) shares does the CCO hold after these transactions?

After the reported entries, the CCO directly holds 22,517 Southside Bancshares common shares. The filing also shows an additional 1,928 shares held indirectly through an ESOP, providing a view of both direct and indirect ownership stakes.

What performance conditions were tied to the SBSI CCO’s stock award?

The stock award reflects settlement of performance-based restricted stock units granted February 2, 2023. These PSUs were earned based on achieving goals related to return on average tangible common equity (ROATCE) and the CCO’s continued employment with Southside Bancshares.

How many SBSI shares were used to cover the CCO’s tax obligations?

The filing shows that 322 Southside Bancshares common shares were disposed of at $29.94 per share. This transaction is identified as a tax-withholding disposition, meaning the shares were delivered to satisfy tax liabilities on the equity award.

Does the SBSI Form 4 indicate any remaining derivative or option positions for the CCO?

The insider data summary lists no remaining derivative transactions or option exercises. Derivative-related counts and shares are reported as zero, indicating the Form 4 focuses on stock award settlement and tax withholding rather than option activity.