BATRACK DAN L 4

4 · TETRA TECH INC · Filed Dec 2, 2025

Form 4

Period: 2025-11-19

DirectorCHIEF EXECUTIVE OFFICER

Transactions

Exercise/Conversion
COMMON STOCK
2025-11-30+21,255→ 335,564 total
Exercise/Conversion
COMMON STOCK
2025-11-30+19,330→ 354,894 total
Tax Payment
COMMON STOCK
2025-11-30$34.74/sh−22,396$778,037→ 332,498 total
Award
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
2025-11-19+101,010→ 101,010 total
From: 2026-11-30→ COMMON STOCK (101,010 underlying)
Exercise/Conversion
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
2025-11-30−21,255→ 42,505 total
From: 2024-11-30→ COMMON STOCK (21,255 underlying)
Exercise/Conversion
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)
2025-11-30−19,330→ 57,990 total
From: 2025-11-30→ COMMON STOCK (19,330 underlying)

Footnotes (6)

[F1]Represents the shares withheld to pay the related tax liability of the restricted stock units (RSUs) that vested on November 30, 2025.
[F2]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.
[F3]The RSUs become vested as to 25% of the shares on November 30, 2026, and 25% annually, thereafter, until fully vested.
[F4]The RSUs are exercisable at the time of vesting and do not have a set expiration date.
[F5]The RSUs become vested as to 25% of the shares on November 30, 2024, and 25% annually, thereafter, until fully vested.
[F6]The RSUs become vested as to 25% of the shares on November 30, 2025, and 25% annually, thereafter, until fully vested.

Documents

1 file