Kirsten M. Volpi - 19 Nov 2025 Form 4 Insider Report for TETRA TECH INC (TTEK)

Role
Director
Signature
/s/ Preston Hopson, Attorney-in-fact for Kirsten M. Volpi
Issuer symbol
TTEK
Transactions as of
19 Nov 2025
Net transactions value
$0
Form type
4
Filing time
02 Dec 2025, 20:23:29 UTC
Previous filing
20 Nov 2025
Next filing
12 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Volpi Kirsten M Director 3475 EAST FOOTHILL BOULEVARD, PASADENA /s/ Preston Hopson, Attorney-in-fact for Kirsten M. Volpi 02 Dec 2025 0001582882

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TTEK COMMON STOCK Options Exercise $0 +1,718 +2.6% $0.000000 68,218 30 Nov 2025 Direct
transaction TTEK COMMON STOCK Options Exercise $9,590 +1,000 +1.5% $9.59 69,218 28 Nov 2025 Direct

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 +1,964 $0.000000 1,964 19 Nov 2025 COMMON STOCK 1,964 Direct F1, F2, F3
transaction TTEK STOCK OPTION (RIGHT TO BUY) Options Exercise $9,590 -1,000 -10% $9.59 9,000 28 Nov 2025 COMMON STOCK 1,000 $9.59 Direct F4
transaction TTEK RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) Options Exercise $0 -1,718 -100% $0.000000 0 30 Nov 2025 COMMON STOCK 1,718 Direct F1, F3, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 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.
F2 The RSUs become 100% vested as to the shares underlying the RSUs on November 30, 2026.
F3 The RSUs are exercisable at the time of vesting and do not have a set expiration date.
F4 The option becomes exercisable as to 100% of the shares on the anniversary of the grant date.
F5 The RSUs become 100% vested as to the shares underlying the RSUs on November 30, 2025.