Roger R. Argus - 19 Nov 2025 Form 4 Insider Report for TETRA TECH INC (TTEK)

Role
President
Signature
/s/ Preston Hopson, Attorney-in-fact for Roger R. Argus
Issuer symbol
TTEK
Transactions as of
19 Nov 2025
Net transactions value
-$99,530
Form type
4
Filing time
02 Dec 2025, 20:08:20 UTC
Previous filing
20 Nov 2025
Next filing
20 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Argus Roger R President 3475 EAST FOOTHILL BOULEVARD, PASADENA /s/ Preston Hopson, Attorney-in-fact for Roger R. Argus 02 Dec 2025 0001721930

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TTEK COMMON STOCK Options Exercise $0 +2,735 +7.3% $0.000000 40,300 30 Nov 2025 Direct
transaction TTEK COMMON STOCK Options Exercise $0 +2,455 +6.1% $0.000000 42,755 30 Nov 2025 Direct
transaction TTEK COMMON STOCK Tax liability $99,530 -2,865 -6.7% $34.74 39,890 30 Nov 2025 Direct F1

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) Award $0 +19,641 $0.000000 19,641 19 Nov 2025 COMMON STOCK 19,641 Direct F2, F3, F4
transaction TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise $0 -2,735 -33% $0.000000 5,460 30 Nov 2025 COMMON STOCK 2,735 Direct F2, F4, F5
transaction TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise $0 -2,455 -25% $0.000000 7,363 30 Nov 2025 COMMON STOCK 2,455 Direct F2, F4, F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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.