TTEK Form 4: CFO Steven Burdick now holds 145,936 shares

Rhea-AI Filing Summary

Tetra Tech, Inc. (TTEK) executive vice president and chief financial officer Steven M. Burdick reported multiple equity transactions on 11/18/2025. Restricted stock units and performance stock units vested, resulting in acquisitions of 2,520, 3,170, and 27,384 shares of common stock at an exercise price of $0 per share. To satisfy related tax liabilities, the company withheld 3,141 and 15,112 shares at a price of $35.69 per share. After these transactions, Burdick directly beneficially owns 145,936 shares of Tetra Tech common stock. The filing also notes a prior update for 149 shares acquired on December 15, 2024 under the employee stock purchase plan.

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^*

BURDICK STEVEN M

(Last) (First) (Middle)

3475 EAST FOOTHILL BOULEVARD

(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)

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

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		M		2,520	A	$0	133,635(1)	D
COMMON STOCK	11/18/2025		M		3,170	A	$0	136,805	D
COMMON STOCK	11/18/2025		F		3,141(2)	D	$35.69	133,664	D
COMMON STOCK	11/18/2025		A		27,384(3)	A	$0	161,048	D
COMMON STOCK	11/18/2025		F		15,112(4)	D	$35.69	145,936	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
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)	(5)	11/18/2025		M			2,520	11/22/2022(6)	(7)	COMMON STOCK	2,520	$0	0	D
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)	(5)	11/18/2025		M			3,170	11/18/2023(8)	(7)	COMMON STOCK	3,170	$0	3,165	D

Explanation of Responses:

1. Amount of securities beneficially owned was updated to reflect that 149 shares of common stock were acquired by the Reporting Person on December 15, 2024, pursuant to the Tetra Tech, Inc. Employee Stock Purchase Plan (ESPP).

2. Represents the shares withheld to pay the related tax liability of the restricted stock units (RSUs) that vested on November 18, 2025.

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

4. Represents the shares withheld to pay the related tax liability of performance stock units that vested on November 18, 2025.

5. Represents an award of restricted stock units (RSUs), each unit of which represents a contingent right to receive one share of Tetra Tech common stock.

6. The RSUs become vested as to 25% of the shares on November 22, 2022, and 25% annually, thereafter, until fully vested.

7. The RSUs are exercisable at the time of vesting and do not have a set expiration date.

8. The RSUs become vested as to 25% of the shares on November 18, 2023, and 25% annually, thereafter, until fully vested.

Remarks:

	/s/ Preston Hopson, Attorney-in-fact for Steven M. Burdick	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.

FAQ

What does the TTEK Form 4 filed by Steven M. Burdick report?

The Form 4 reports that Steven M. Burdick, EVP and CFO of Tetra Tech, Inc. (TTEK), had restricted stock units and performance stock units vest on 11/18/2025, resulting in acquisitions and tax-related dispositions of Tetra Tech common stock.

How many Tetra Tech (TTEK) shares does Steven M. Burdick own after these transactions?

Following the reported transactions on 11/18/2025, Steven M. Burdick directly beneficially owns 145,936 shares of Tetra Tech common stock.

What share acquisitions were reported for TTEK on November 18, 2025?

On 11/18/2025, Burdick acquired Tetra Tech common stock through equity awards: 2,520 and 3,170 shares from vesting restricted stock units and 27,384 shares from vesting performance stock units, all at $0 exercise price.

Why were some Tetra Tech (TTEK) shares disposed of at $35.69 in the Form 4?

The Form 4 explains that 3,141 and 15,112 Tetra Tech shares were withheld and disposed of at $35.69 per share to pay the related tax liabilities on vesting restricted stock units and performance stock units.

What are the restricted stock units and performance stock units mentioned in the TTEK filing?

The filing states that each restricted stock unit (RSU) represents a contingent right to receive one share of Tetra Tech common stock and that the RSUs vest in 25% annual installments starting on specified dates. It also notes that additional shares were acquired upon vesting of performance stock units earned under the 2018 Equity Incentive Plan.

How did the employee stock purchase plan affect Steven M. Burdicks TTEK holdings?

The explanation notes that Burdicks beneficial ownership was updated to include 149 shares of Tetra Tech common stock acquired on December 15, 2024 under the companys Employee Stock Purchase Plan (ESPP).