Tetra Tech director acquires 4,104 TTEK shares via equity award

Tetra Tech, Inc. (TTEK) reported an insider equity award for a company director.

Rhea-AI Filing Summary

Tetra Tech, Inc. (TTEK) reported an insider equity award for a company director. On 11/18/2025, the director acquired 4,104 shares of common stock at a price of $0, reflecting the vesting of performance stock units earned under the company’s 2018 Equity Incentive Plan. After this transaction, the director beneficially owns 14,835 shares of Tetra Tech common stock, held directly.

Insider Trade Summary

Grant/Award: 4,104 shares

Grant/Award 1 txn

Insider Gandhi Prashant

Role Director

Type	Security	Shares	Price	Value
Grant/Award	COMMON STOCK	4,104	$0.00	$0.00

Holdings After Transaction: COMMON STOCK — 14,835 shares (Direct)

Footnotes (1)

1. F1. Shares acquired pursuant to vesting of performance stock units earned under 2018 Equity Incentive Plan.

FAQ

What insider transaction did Tetra Tech (TTEK) report in this Form 4?

The filing reports that a Tetra Tech director acquired 4,104 shares of common stock on 11/18/2025 through the vesting of performance stock units.

How many TTEK shares does the director own after this transaction?

Following the reported transaction, the director beneficially owns 14,835 shares of Tetra Tech common stock, held directly.

What was the price paid for the Tetra Tech (TTEK) shares acquired?

The 4,104 Tetra Tech common shares were acquired at a reported price of $0, consistent with shares delivered upon vesting of equity awards.

What plan governed the equity grant reported for TTEK?

The shares were acquired upon vesting of performance stock units earned under Tetra Tech’s 2018 Equity Incentive Plan.

What is the reporting person’s relationship to Tetra Tech (TTEK)?

The reporting person is identified as a Director of Tetra Tech, Inc.

Is this TTEK Form 4 filed for one or multiple reporting persons?

The Form 4 is indicated as being filed by one reporting person, not a group.

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Accepted by SEC EDGAR 11/20/2025 - 06:49 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^*

Gandhi Prashant

(Last) (First) (Middle)

3475 E. FOOTHILL BLVD.

(Street)

PASADENA CA 91107

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
TETRA TECH INC [ TTEK ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
11/18/2025

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	11/18/2025		A		4,104(1)	A	$0	14,835	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

Explanation of Responses:

1. Shares acquired pursuant to vesting of performance stock units earned under 2018 Equity Incentive Plan.

Remarks:

	/s/ Preston Hopson, Attorney-in-Fact for Prashant Gandhi	11/20/2025
	** 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.