[Form 4] TRUSTMARK CORP Insider Trading Activity

Rhea-AI Filing Summary

Trustmark Corp director William G. Yates III received a stock award of 1,396 shares of Common Stock on April 28, 2026. The award was granted at a stated price of $0.00 per share, indicating it is a compensation-related grant rather than an open-market purchase.

After this award, Yates directly holds 34,652 Trustmark common shares. A footnote notes that his position includes 18 shares acquired through the TRMK Employee and Director Stock Purchase Plan and 702 shares acquired through dividend reinvestment as of April 28, 2026.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Yates William G III

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,396	$0.00	--

Holdings After Transaction: Common Stock — 34,652 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Stock award: 1,396 shares Grant price: $0.00 per share Total direct holdings: 34,652 shares +2 more

5 metrics

Stock award 1,396 shares Common Stock grant on April 28, 2026

Grant price $0.00 per share Stated transaction price for stock award

Total direct holdings 34,652 shares Shares directly owned after transaction

Shares via purchase plan 18 shares Acquired through TRMK Employee and Director Stock Purchase Plan as of April 28, 2026

Dividend reinvestment shares 702 shares Acquired through dividend reinvestment as of April 28, 2026

Key Terms

Common Stock, Grant, award, or other acquisition, TRMK Employee and Director Stock Purchase Plan, dividend reinvestment

4 terms

Common Stock financial

"security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition""

TRMK Employee and Director Stock Purchase Plan financial

"Includes 18 shares acquired through TRMK Employee and Director Stock Purchase Plan"

dividend reinvestment financial

"and 702 shares acquired through dividend reinvestment as of April 28, 2026"

Dividend reinvestment is when the money earned from a company's profit sharing, called dividends, is automatically used to buy more shares of that company instead of being received as cash. This process helps investors grow their holdings over time without extra effort, much like using earned interest to buy more of a savings account. It encourages long-term investment growth by continuously increasing the amount of shares owned.

Form 4 Insider Transactions: What Each Field Means →

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^*

Yates William G III

(Last) (First) (Middle)

P. O. BOX 291

(Street)

JACKSON MISSISSIPPI 39205

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
TRUSTMARK CORP [ TRMK ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/28/2026

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	04/28/2026		A		1,396	A	$0	34,652(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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Includes 18 shares acquired through TRMK Employee and Director Stock Purchase Plan and 702 shares acquired through dividend reinvestment as of April 28, 2026.

	William G. Yates, III, by Granville Tate, Jr., POA	04/30/2026
	** 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 transaction did TRUSTMARK CORP (TRMK) report for William G. Yates III?

Trustmark Corp reported that director William G. Yates III received a stock award of 1,396 shares of common stock. This was a compensation-related grant at a stated price of $0.00 per share, not an open-market purchase or sale of existing shares.

How many TRUSTMARK CORP (TRMK) shares did the director receive in this Form 4 filing?

The director received 1,396 shares of Trustmark Corp common stock. These shares were reported under transaction code “A,” indicating a grant, award, or other acquisition, and were recorded at a price of $0.00 per share as part of his compensation.

What are William G. Yates III’s total TRUSTMARK CORP (TRMK) holdings after this transaction?

Following the 1,396-share stock award, William G. Yates III directly holds 34,652 Trustmark Corp common shares. This total includes previously accumulated shares through regular ownership, as well as shares obtained via the employee and director stock purchase plan and dividend reinvestment.

Was the TRUSTMARK CORP (TRMK) transaction an open-market buy or sell?

The transaction was not an open-market buy or sell. It is classified under code “A” as a grant, award, or other acquisition, with 1,396 shares received at a stated price of $0.00 per share, reflecting equity compensation rather than market trading activity.

What does the footnote in the TRUSTMARK CORP (TRMK) Form 4 say about Yates’s shares?

The footnote explains that his holdings include 18 shares acquired through the TRMK Employee and Director Stock Purchase Plan and 702 shares acquired through dividend reinvestment, all as of April 28, 2026. These details clarify how portions of his total 34,652-share position were accumulated.