[Form 4] TETRA TECHNOLOGIES INC Insider Trading Activity

TETRA Technologies Executive Vice President Matthew Sanderson reported the vesting of two restricted stock unit (RSU) awards and related share dispositions.

Rhea-AI Filing Summary

TETRA Technologies Executive Vice President Matthew Sanderson reported the vesting of two restricted stock unit (RSU) awards and related share dispositions. On February 25, 2026, 15,942 RSUs granted on February 22, 2023 and 15,124 RSUs granted on February 19, 2024 vested and converted into common stock on a one-for-one basis.

To cover tax withholding upon vesting, 7,950 and 6,353 common shares from these awards were surrendered to the company at $11.14 per share. After these derivative exercises and tax-withholding dispositions, Sanderson directly owned 712,109 shares of common stock, and the remaining unvested portion of the 2024 RSU award will continue to vest every six months until February 25, 2027.

Insider Trade Summary

31,066 shares exercised/converted

Exercise 6 txns

Insider SANDERSON MATTHEW

Role Executive Vice President

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	15,942	$0.00	$0.00
Exercise	Restricted Stock Units	15,124	$0.00	$0.00
Exercise	Common Stock	15,942	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	7,950	$11.14	$89K
Exercise	Common Stock	15,124	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	6,353	$11.14	$71K

Holdings After Transaction: Restricted Stock Units — 30,249 contracts (Direct); Common Stock — 712,109 shares (Direct)

Footnotes (6)

1. F1. Represents vested shares of restricted stock units granted on February 22, 2023. Restricted stock units convert into common stock on a one-for-one basis.
2. F2. Reflects units surrendered to the Issuer for tax withholding purposes upon the vesting of the restricted stock unit granted on February 22, 2023.
3. F3. Represents vested shares of restricted stock units granted on February 19, 2024. Restricted stock units convert into common stock on a one-for-one basis.
4. F4. Reflects units surrendered to the Issuer for tax withholding purposes upon the vesting of the restricted stock unit granted on February 19, 2024.
5. F5. There is no remaining unvested portion of this restricted stock unit award.
6. F6. The remaining unvested portion of this restricted stock unit award will vest every six months until fully vested on February 25, 2027. Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock upon vesting of the unit.

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Accepted by SEC EDGAR 02/27/2026 - 04:22 PM Learn about SEC filing dates

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^*

SANDERSON MATTHEW

(Last) (First) (Middle)

10000 ENERGY DRIVE

SUITE 600

(Street)

SPRING TX 77389

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
TETRA TECHNOLOGIES INC [ TTI ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
02/25/2026

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
Common Stock	02/25/2026		M(1)		15,942	A	$0.00	711,288	D
Common Stock	02/25/2026		F(2)		7,950	D	$11.14	703,338	D
Common Stock	02/25/2026		M(3)		15,124	A	$0.00	718,462	D
Common Stock	02/25/2026		F(4)		6,353	D	$11.14	712,109	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
Restricted Stock Units	$0.00	02/25/2026		M(1)			15,942	(5)	(5)	Common Stock	15,942	$0.00	0.00	D
Restricted Stock Units	$0.00	02/25/2026		M(3)			15,124	(6)	(6)	Common Stock	15,124	$0.00	30,249	D

Explanation of Responses:

1. Represents vested shares of restricted stock units granted on February 22, 2023. Restricted stock units convert into common stock on a one-for-one basis.

2. Reflects units surrendered to the Issuer for tax withholding purposes upon the vesting of the restricted stock unit granted on February 22, 2023.

3. Represents vested shares of restricted stock units granted on February 19, 2024. Restricted stock units convert into common stock on a one-for-one basis.

4. Reflects units surrendered to the Issuer for tax withholding purposes upon the vesting of the restricted stock unit granted on February 19, 2024.

5. There is no remaining unvested portion of this restricted stock unit award.

6. The remaining unvested portion of this restricted stock unit award will vest every six months until fully vested on February 25, 2027. Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock upon vesting of the unit.

Remarks:

	Kimberly M. O'Brien, attorney in fact	02/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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