Leslie L. Shoemaker - 18 Nov 2025 Form 4 Insider Report for TETRA TECH INC (TTEK)

Role
EVP, Chief Sustainability
Signature
/s/ Preston Hopson, Attorney-in-fact for Leslie L. Shoemaker
Issuer symbol
TTEK
Transactions as of
18 Nov 2025
Transactions value $
-$651,450
Form type
4
Date filed
20 Nov 2025, 18:44
Previous filing
10 Jul 2025
Next filing
02 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
SHOEMAKER LESLIE L EVP, Chief Sustainability 3475 EAST FOOTHILL BOULEVARD, PASADENA /s/ Preston Hopson, Attorney-in-fact for Leslie L. Shoemaker 2025-11-20 0001450067

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TTEK COMMON STOCK Options Exercise $0 +2.52K +0.82% $0.00 311K 18 Nov 2025 Direct F1
transaction TTEK COMMON STOCK Options Exercise $0 +3.17K +1.02% $0.00 314K 18 Nov 2025 Direct
transaction TTEK COMMON STOCK Tax liability -$112K -3.14K -1% $35.69 311K 18 Nov 2025 Direct F2
transaction TTEK COMMON STOCK Award $0 +27.4K +8.82% $0.00 338K 18 Nov 2025 Direct F3
transaction TTEK COMMON STOCK Tax liability -$539K -15.1K -4.47% $35.69 323K 18 Nov 2025 Direct F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise $0 -2.52K -100% $0.00 0 18 Nov 2025 COMMON STOCK 2.52K Direct F5, F6, F7
transaction TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise $0 -3.17K -50.04% $0.00 3.17K 18 Nov 2025 COMMON STOCK 3.17K Direct F5, F7, F8
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 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).
F2 Represents the shares withheld to pay the related tax liability of the restricted stock units (RSUs) that vested on November 18, 2025.
F3 Shares acquired pursuant to vesting of performance stock units earned under 2018 Equity Incentive Plan.
F4 Represents the shares withheld to pay the related tax liability of performance stock units that vested on November 18, 2025.
F5 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.
F6 The RSUs become vested as to 25% of the shares on November 18, 2022, and 25% annually, thereafter, until fully vested.
F7 The RSUs are exercisable at the time of vesting and do not have a set expiration date.
F8 The RSUs become vested as to 25% of the shares on November 18, 2023, and 25% annually, thereafter, until fully vested.