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 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * FUNKE JAMES H   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 _____ Officer (give title below) _____ Other (specify below) VP (Last) (First) (Middle) 24955 INTERSTATE 45 N 3. Date of Earliest Transaction (Month/Day/Year) 02/22/2018 (Street) THE WOODLANDS, TX 77380 4. If Amendment, Date 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 (City) (State) (Zip) 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 02/22/2018   A   36,746 A $ 0 (1) 63,774 D   Common Stock 02/22/2018   F   1,973 D $ 3.87 (2) 61,801 D   Common Stock               13,910 I by 401(k) Plan (3) Common Stock               39,812 I by Funke Family Living Trust (4)

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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 Underlying Securities (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)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Stock Option (Right to Buy)

$ 3.87

02/22/2018

A

38,252

(5)

02/22/2028

Common Stock

38,252

$ 0

38,252

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
FUNKE JAMES H 24955 INTERSTATE 45 N THE WOODLANDS, TX 77380			VP

Signatures

Kimberly M. O'Brien, attorney in fact		02/26/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	This restricted stock award was granted pursuant to the TETRA Technologies, Inc. Third Amended and Restated 2011 Long Term Incentive Compensation Plan. One-third of the award will vest on February 22, 2019, and one-sixth at the completion of each six-month period thereafter until February 22, 2021.
(2)	Reflects shares surrendered to the Issuer to satisfy tax withholding obligations upon the vesting of restricted stock granted on February 22, 2017.
(3)	Rounded. Reflects shares held for the Reporting Person's account by the Trustee of TETRA Technologies, Inc. 401(k) Retirement Plan as of December 31, 2017.
(4)	These shares are held in a trust for the benefit of the reporting person and the reporting person's spouse and children. The reporting person and his spouse are co-trustees of the trust..
(5)	This stock option award was granted pursuant to the TETRA Technologies, Inc. Third Amended and Restated 2011 Long Term Incentive Compensation Plan. One-third of the award will vest on February 22, 2019, and the remaining stock options will vest in monthly installments thereafter until February 22, 2021.

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