STEVEN M. BURDICK - 06 Feb 2026 Form 4 Insider Report for TETRA TECH INC (TTEK)

Role: EVP, CFO
Signature: /s/ Preston Hopson, Attorney-in-fact for Steven M. Burdick
Issuer symbol: TTEK
Transactions as of: 06 Feb 2026
Net transactions value: $0
Form type: 4
Filing time: 06 Feb 2026, 17:07:40 UTC
Previous filing: 02 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
BURDICK STEVEN M	EVP, CFO	3475 EAST FOOTHILL BOULEVARD, PASADENA,	/s/ Preston Hopson, Attorney-in-fact for Steven M. Burdick	06 Feb 2026	0001277150

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TTEK	COMMON STOCK	Gift	$0	-11,100	-7.4%	$0.000000	138,251	06 Feb 2026	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Bona fide gift to charitable organization. No compensation was given to the donor for the gifting of shares.
F2	The balance of 149,351 shares includes 132 shares of common stock that were acquired by the Reporting Person on December 15, 2025, pursuant to the Tetra Tech, Inc. Employee Stock Purchase Plan (ESPP).