TETRA TECH INC — Director's Dealing 2026

Feb 6, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TETRA TECH INC (TTEK)
CIK: 0000831641
Period of Report: 2026-02-06

Reporting Person: BURDICK STEVEN M (EVP, CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-06	COMMON STOCK	G	11100	—	Disposed	138251	Direct

Footnotes

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).