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

Reporting relationship: President
Issuer ticker: TTEK
Reported as of: 19 Nov 2025
Net transaction value: -$99,530
SEC form: 4
Accepted by SEC: 02 Dec 2025, 20:08:20 UTC
Prior SEC filing: 20 Nov 2025
Next SEC filing: 20 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Preston Hopson, Attorney-in-fact for Roger R. Argus

Key filing fact

Roger R. Argus filed Form 4 for TETRA TECH INC (TTEK) on 02 Dec 2025.

Key facts

This page summarizes Roger R. Argus's Form 4 filing for TETRA TECH INC (TTEK).
6 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 02 Dec 2025, 20:08.

Change

Previous filing in this sequence was filed on 20 Nov 2025.
Current net transaction value: -$99,530.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001721930 Primary reporting owner

Argus Roger R

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

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TTEK transaction

COMMON STOCK

Options Exercise

Transaction value: $0
Shares: +2,735
Change %: +7.3%
Price: $0.000000
Shares after: 40,300
Date: 30 Nov 2025
Ownership: Direct

TTEK transaction

COMMON STOCK

Options Exercise

Transaction value: $0
Shares: +2,455
Change %: +6.1%
Price: $0.000000
Shares after: 42,755
Date: 30 Nov 2025
Ownership: Direct

TTEK transaction

COMMON STOCK

Tax liability

Transaction value: $99,530
Shares: -2,865
Change %: -6.7%
Price: $34.74
Shares after: 39,890
Date: 30 Nov 2025
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

TTEK transaction Derivative

RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)

Award

Transaction value: $0
Shares: +19,641
Change %
Price: $0.000000
Shares after: 19,641
Date: 19 Nov 2025
Ownership: Direct
Underlying class: COMMON STOCK
Underlying amount: 19,641
Exercise price
Footnotes: F2, F3, F4

TTEK transaction Derivative

RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)

Options Exercise

Transaction value: $0
Shares: -2,735
Change %: -33%
Price: $0.000000
Shares after: 5,460
Date: 30 Nov 2025
Ownership: Direct
Underlying class: COMMON STOCK
Underlying amount: 2,735
Exercise price
Footnotes: F2, F4, F5

TTEK transaction Derivative

RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)

Options Exercise

Transaction value: $0
Shares: -2,455
Change %: -25%
Price: $0.000000
Shares after: 7,363
Date: 30 Nov 2025
Ownership: Direct
Underlying class: COMMON STOCK
Underlying amount: 2,455
Exercise price
Footnotes: F2, F4, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

Represents the shares withheld to pay the related tax liability of the restricted stock units (RSUs) that vested on November 30, 2025.

Footnote 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.

Footnote F3

The RSUs become vested as to 25% of the shares on November 30, 2026, and 25% annually, thereafter, until fully vested.

Footnote F4

The RSUs are exercisable at the time of vesting and do not have a set expiration date.

Footnote F5

The RSUs become vested as to 25% of the shares on November 30, 2024, and 25% annually, thereafter, until fully vested.

Footnote F6

The RSUs become vested as to 25% of the shares on November 30, 2025, and 25% annually, thereafter, until fully vested.