Tetra Tech CEO granted 28,174 RSUs

Argus Roger R reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Argus Roger R reported acquisition or exercise transactions in this Form 4 filing.

TETRA TECH INC President and CEO Roger R. Argus received a grant of 28,174 restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Tetra Tech common stock. The RSUs vest 25% on February 19, 2027, and 25% annually thereafter until fully vested. They become exercisable upon vesting and do not have a set expiration date.

Insider Trade Summary

Grant/Award: 28,174 shares

Grant/Award 1 txn

Insider Argus Roger R

Role President and CEO

Type	Security	Shares	Price	Value
Grant/Award	RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)	28,174	$0.00	$0.00

Holdings After Transaction: RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) — 28,174 contracts (Direct)

Footnotes (3)

1. 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.
2. F2. The RSUs become vested as to 25% of the shares on February 19, 2027, and 25% annually, thereafter, until fully vested.
3. F3. The RSUs are exercisable at the time of vesting and do not have a set expiration date.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Tetra Tech (TTEK) report for Roger R. Argus?

Tetra Tech reported that President and CEO Roger R. Argus acquired 28,174 restricted stock units. These RSUs are a form of equity compensation that can convert into Tetra Tech common shares over time, aligning the executive’s interests with long-term shareholder value.

How many restricted stock units did the TTEK CEO receive in this Form 4 filing?

The CEO received 28,174 restricted stock units. Each RSU represents the right to receive one share of Tetra Tech common stock, subject to vesting conditions. This award increases his direct equity-based incentive tied to the company’s future performance and share price.

What is the vesting schedule for Roger R. Argus’s new Tetra Tech RSUs?

The RSUs vest 25% on February 19, 2027, with 25% vesting each year thereafter until fully vested. This multi‑year vesting schedule encourages long-term retention and links the CEO’s compensation to sustained company performance over several years.

Do the newly granted TTEK restricted stock units have an expiration date?

The RSUs become exercisable at the time of vesting and do not have a set expiration date. Once vested, each unit can be settled for a share of Tetra Tech common stock under the plan’s terms, supporting long-term equity ownership for the CEO.

Is the TTEK CEO’s RSU award reported as a direct or indirect holding?

The award is reported as a direct holding of Roger R. Argus. The Form 4 classifies the ownership as direct, meaning the CEO personally holds the restricted stock units rather than through an entity such as a trust, partnership, or family vehicle.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/20/2026 - 07:02 PM EST Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Argus Roger R

(Last) (First) (Middle)

3475 EAST FOOTHILL BOULEVARD

(Street)

PASADENA CA 91107

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
TETRA TECH INC [ TTEK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
02/19/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)	(1)	02/19/2026		A		28,174		02/19/2027(2)	(3)	COMMON STOCK	28,174	$0	28,174	D

Explanation of Responses:

1. 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.

2. The RSUs become vested as to 25% of the shares on February 19, 2027, and 25% annually, thereafter, until fully vested.

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

Remarks:

	/s/ Preston Hopson, Attorney-in-fact for Roger R. Argus	02/20/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.