Christiana Obiaya - 19 Feb 2026 Form 4 Insider Report for TETRA TECH INC (TTEK)

Role
Director
Signature
/s/ Preston Hopson, Attorney-in-Fact for Christiana Obiaya
Issuer symbol
TTEK
Transactions as of
19 Feb 2026
Net transactions value
$0
Form type
4
Filing time
20 Feb 2026, 19:04:07 UTC
Previous filing
02 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Obiaya Christiana Director 3475 E. FOOTHILL BLVD., PASADENA /s/ Preston Hopson, Attorney-in-Fact for Christiana Obiaya 20 Feb 2026 0001902712

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TTEK COMMON STOCK Options Exercise $0 +495 +5.4% $0.000000 9,666 19 Feb 2026 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) Options Exercise $0 -495 -100% $0.000000 0 19 Feb 2026 COMMON STOCK 495 Direct F1, F2, F3, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Christiana Obiaya is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

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 Vesting of the RSUs, which was initially scheduled for November 18, 2026, was accelerated on the Reporting Person's retirement from the Issuer's board of directors.
F3 The RSUs are exercisable at the time of vesting and do not have a set expiration date.
F4 Balance of 1,469 RSUs were cancelled upon retirement.