FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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OMB Number: 3235-0287
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

SANDERSON MATTHEW		 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
(Last)          (First)          (Middle)

24955 INTERSTATE 45 N		 3. Date of Earliest Transaction (MM/DD/YYYY)

2/25/2023
(Street)

THE WOODLANDS, TX 77380
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
 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. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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 2/25/2023  M(1)  35192.00 A$0.00 483341.00 D  
Common Stock 2/25/2023  F(2)  18424.00 D$3.87 464917.00 D  
Common Stock 2/25/2023  M(3)  25895.00 A$0.00 490812.00 D  
Common Stock 2/25/2023  F(4)  13557.00 D$3.87 477255.00 D  

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)		2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date7. 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 of Derivative Security: 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 $0.00 2/25/2023  M (1)    35192.00   (5) (5)Common Stock 35192.00 $0.00 0.00 D  
Restricted Stock Units $0.00 2/25/2023  M (3)    25895.00   (6) (6)Common Stock 25895.00 $0.00 51790.00 D  
Explanation of Responses:
(1) Represents vested shares of restricted stock units granted on February 20, 2020. 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 20, 2020.
(3) Represents vested shares of restricted stock units granted on February 17, 2021. 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 17, 2021.
(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, 2024. Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock upon vesting of the unit.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
SANDERSON MATTHEW
24955 INTERSTATE 45 N
THE WOODLANDS, TX 77380

Executive Vice President
Signatures
Kimberly M. O'Brien, attorney in fact2/28/2023
**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 control number.
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