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  4. [Form 4] TETRA TECHNOLOGIES INC Insider Trading Activity

TETRA CFO vests 29,694 RSUs, surrenders shares

TETRA TECHNOLOGIES INC (TTI) reported insider equity compensation activity by Executive Vice President & CFO Matthew Sanderson.

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

TETRA TECHNOLOGIES INC (TTI) reported insider equity compensation activity by Executive Vice President & CFO Matthew Sanderson. On August 25, 2026, Sanderson exercised or converted a total of 29,694 restricted stock units into the same number of shares of common stock, reflecting vesting of awards granted on February 19, 2024 and February 28, 2025 at a one-for-one rate.

In connection with these vestings, 11,686 shares of common stock were surrendered back to TETRA Technologies at $6.77 per share to satisfy tax withholding obligations. The remaining portions of these restricted stock unit awards will continue to vest every six months until fully vested on February 25, 2027 and February 25, 2028, respectively.

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Insider SANDERSON MATTHEW
Role Executive Vice President & CFO
Type Security Shares Price Value
Exercise Restricted Stock Units F1, F5 15,124 $0.00 $0.00
Exercise Restricted Stock Units F3, F6 14,570 $0.00 $0.00
Exercise Common Stock F1 15,124 $0.00 $0.00
Tax Withholding Common Stock F2 5,952 $6.77 $40K
Exercise Common Stock F3 14,570 $0.00 $0.00
Tax Withholding Common Stock F4 5,734 $6.77 $39K
Holdings After Transaction: Restricted Stock Units — 58,837 contracts (Direct); Common Stock — 794,210 shares (Direct)
Footnotes (6)
  1. F1. 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.
  2. F2. Reflects units surrendered to the Issuer to satisfy tax withholding obligations upon the vesting of the restricted stock unit granted on February 19, 2024.
  3. F3. Represents vested shares of restricted stock units granted on February 28, 2025. Restricted stock units convert into common stock on a one-for-one basis.
  4. F4. Reflects units surrendered to the Issuer to satisfy tax withholding obligations upon the vesting of the restricted stock unit granted on February 28, 2025.
  5. F5. 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.
  6. F6. The remaining unvested portion of this restricted stock unit award will vest every six months until fully vested on February 25, 2028. Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock upon vesting of the unit.
RSUs exercised (total) 29,694 restricted stock units Total restricted stock units converted into common stock on August 25, 2026
RSUs vested 2024 grant 15,124 restricted stock units Vested from February 19, 2024 restricted stock unit grant on August 25, 2026
RSUs vested 2025 grant 14,570 restricted stock units Vested from February 28, 2025 restricted stock unit grant on August 25, 2026
Shares surrendered for taxes (total) 11,686 shares Shares surrendered to issuer to satisfy tax withholding obligations on August 25, 2026
Tax withholding share price $6.77 per share Price used for shares surrendered to satisfy tax withholding obligations
Tax withholding shares 2024 grant 5,952 shares Shares surrendered related to February 19, 2024 restricted stock unit vesting
Tax withholding shares 2025 grant 5,734 shares Shares surrendered related to February 28, 2025 restricted stock unit vesting
Restricted Stock Units financial
"Represents vested shares of restricted stock units granted on February 19, 2024."
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
tax withholding obligations financial
"Reflects units surrendered to the Issuer to satisfy tax withholding obligations"
contingent right financial
"Each restricted stock unit represents the contingent right to receive one share"
Exercise or conversion of derivative security financial
"transaction_code_description": "Exercise or conversion of derivative security"

FAQ

What insider transactions did TTI’s CFO Matthew Sanderson report on August 25, 2026?
Matthew Sanderson reported vesting and exercise of 29,694 restricted stock units into common stock of TETRA TECHNOLOGIES INC on August 25, 2026, related to awards granted on February 19, 2024 and February 28, 2025, each converting into common stock on a one-for-one basis.

How many TTI restricted stock units vested for the CFO from each grant date?
On August 25, 2026, 15,124 restricted stock units vested from the February 19, 2024 grant and 14,570 restricted stock units vested from the February 28, 2025 grant, each converting into an equal number of TETRA TECHNOLOGIES common shares.

How many TTI shares did the CFO surrender for tax withholding and at what price?
To satisfy tax withholding obligations on vesting, Matthew Sanderson surrendered a total of 11,686 shares of TETRA TECHNOLOGIES common stock at $6.77 per share, consisting of 5,952 shares tied to the 2024 grant and 5,734 shares tied to the 2025 grant.

Are the reported TTI insider transactions open-market buys or sells?
No. The filing shows exercises of restricted stock units and shares surrendered for tax withholding. The code F transactions specifically reflect payment of tax liabilities by delivering or withholding shares, not open-market purchases or sales.

When will the CFO’s remaining TTI restricted stock units from these grants be fully vested?
The remaining unvested portion of the February 19, 2024 restricted stock unit award will vest every six months until February 25, 2027, and the remaining unvested portion of the February 28, 2025 award will vest every six months until February 25, 2028.

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SEC Form 4
FORM 4UNITED 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 TEXAS 77389
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
TETRA TECHNOLOGIES INC [ TTI ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Executive Vice President & CFO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/25/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock08/25/2026M(1)15,124A$0.00791,326D
Common Stock08/25/2026F(2)5,952D$6.77785,374D
Common Stock08/25/2026M(3)14,570A$0.00799,944D
Common Stock08/25/2026F(4)5,734D$6.77794,210D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units$0.0008/25/2026M(1)15,124 (5) (5)Common Stock15,124$0.0015,125D
Restricted Stock Units$0.0008/25/2026M(3)14,570 (6) (6)Common Stock14,570$0.0043,712D
Explanation of Responses:
1. 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.
2. Reflects units surrendered to the Issuer to satisfy tax withholding obligations upon the vesting of the restricted stock unit granted on February 19, 2024.
3. Represents vested shares of restricted stock units granted on February 28, 2025. Restricted stock units convert into common stock on a one-for-one basis.
4. Reflects units surrendered to the Issuer to satisfy tax withholding obligations upon the vesting of the restricted stock unit granted on February 28, 2025.
5. 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.
6. The remaining unvested portion of this restricted stock unit award will vest every six months until fully vested on February 25, 2028. 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 fact08/27/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR