What is Elijio Serrano’s direct TETRA Technologies (TTI) share ownership after these transactions?

After the reported RSU conversions and tax-withholding dispositions, Elijio Serrano directly owned 1,523,015 shares of TETRA Technologies common stock. This figure reflects the total shares shown as “following transaction” in the final reported common stock entry in the Form 4 transaction table.

TETRA (NYSE: TTI) CFO nets stock from RSU vesting and tax withholding

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

TETRA Technologies Sr. Vice President & CFO Elijio V. Serrano reported RSU vesting and related tax withholding transactions. On February 25, 2026, restricted stock units granted on February 22, 2023 and February 19, 2024 vested and converted into common stock on a one-for-one basis, including 21,256 and 20,165 common shares acquired through derivative exercises.

To cover tax obligations at vesting, Serrano surrendered 5,703 and 4,911 common shares at $11.14 per share to the issuer. After these acquisitions and tax-withholding dispositions, he directly owned 1,523,015 shares of TETRA Technologies common stock, and one RSU award continues to vest every six months until February 25, 2027.

Insider Trade Summary

41,421 shares exercised/converted

Mixed 6 txns

Insider SERRANO ELIJIO V

Role Sr. Vice President & CFO

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	21,256	$0.00	--
Exercise	Restricted Stock Units	20,165	$0.00	--
Exercise	Common Stock	21,256	$0.00	--
Tax Withholding	Common Stock	5,703	$11.14	$64K
Exercise	Common Stock	20,165	$0.00	--
Tax Withholding	Common Stock	4,911	$11.14	$55K

Holdings After Transaction: Restricted Stock Units — 0 shares (Direct); Common Stock — 1,513,464 shares (Direct)

Footnotes (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. Reflects units surrendered to the Issuer for tax withholding purposes upon the vesting of the restricted stock unit granted on February 22, 2023. 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. Reflects units surrendered to the Issuer for tax withholding purposes upon the vesting of the restricted stock unit granted on February 19, 2024. There is no remaining unvested portion of this restricted stock unit award. 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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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 02/27/2026 - 04:22 PM

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^*

SERRANO ELIJIO V

(Last)

(First)

(Middle)

10000 ENERGY DRIVE

SUITE 600

(Street)

SPRING

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)
	Sr. Vice President & CFO

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	02/25/2026		M⁽¹⁾		21,256	A	$0.00	1,513,464	D
Common Stock	02/25/2026		F⁽²⁾		5,703	D	$11.14	1,507,761	D
Common Stock	02/25/2026		M⁽³⁾		20,165	A	$0.00	1,527,926	D
Common Stock	02/25/2026		F⁽⁴⁾		4,911	D	$11.14	1,523,015	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	$0.00	02/25/2026		M⁽¹⁾			21,256	⁽⁵⁾	⁽⁵⁾	Common Stock	21,256	$0.00	0.00	D
Restricted Stock Units	$0.00	02/25/2026		M⁽³⁾			20,165	⁽⁶⁾	⁽⁶⁾	Common Stock	20,165	$0.00	40,332	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.
* 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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did TETRA Technologies (TTI) CFO Elijio Serrano report?

TETRA Technologies CFO Elijio Serrano reported RSU vesting and related tax-withholding transactions. Restricted stock units granted in 2023 and 2024 vested and converted one-for-one into common stock, with some of the resulting shares surrendered back to the issuer to satisfy tax obligations.

How many TETRA Technologies (TTI) shares did the CFO acquire through RSU vesting?

The Form 4 shows the CFO acquiring common stock from vested restricted stock units, including 21,256 and 20,165 shares through derivative exercises. These reflect previously granted RSUs from February 22, 2023 and February 19, 2024 converting into TETRA Technologies common stock on a one-for-one basis.

How many TETRA Technologies (TTI) shares were surrendered for tax withholding?

The filing reports two tax-withholding dispositions coded “F.” Serrano surrendered 5,703 shares and 4,911 shares of TETRA Technologies common stock at a transaction price of $11.14 per share, delivering these shares to the issuer to satisfy tax liabilities triggered by RSU vesting.

What do the footnotes say about TETRA Technologies (TTI) CFO’s RSU awards and vesting schedule?

Footnotes state that RSUs granted on February 22, 2023 are now fully vested, while RSUs granted on February 19, 2024 will continue vesting every six months until fully vested on February 25, 2027. Each restricted stock unit represents the right to receive one common share upon vesting.

Were TETRA Technologies (TTI) CFO’s reported dispositions open-market sales?

The dispositions are coded “F” and described as payments of tax liability by delivering securities. Footnotes explain these were units or shares surrendered to the issuer for tax withholding upon RSU vesting, indicating they were not open-market sales but tax-withholding transactions.