Tetra Tech (TTEK) director awarded 1,754 restricted stock units

Rhea-AI Filing Summary

Tetra Tech director M. Susan Hardwick received an equity award in the form of restricted stock units. On 01/26/2026 she was granted 1,754 RSUs, each representing a right to receive one share of Tetra Tech common stock at a price of $0 per unit.

The RSUs vest and become exercisable as to 100% of the shares on the first anniversary of the grant date, 01/26/2027. They are exercisable at the time of vesting and do not have a set expiration date, and are reported as directly owned.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Hardwick M Susan

Role Director

Type	Security	Shares	Price	Value
Grant/Award	RESTRICTED STOCK UNITS (RIGHT TO RECEIVE)	1,754	$0.00	--

Holdings After Transaction: RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) — 1,754 shares (Direct)

Footnotes (1)

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. The RSUs become exercisable as to 100% of the shares on the first anniversary of the grant date. The RSUs are exercisable at the time of vesting and do not have a set expiration date.

Form 4 Insider Transactions: What Each Field Means →

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^*

Hardwick M Susan

(Last) (First) (Middle)

3475 E. FOOTHILL BLVD

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
01/26/2026

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)	01/26/2026		A		1,754		01/26/2027(2)	(3)	COMMON STOCK	1,754	$0	1,754	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 exercisable as to 100% of the shares on the first anniversary of the grant date.

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 M. Susan Hardwick	01/28/2026
	** 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.

FAQ

What insider transaction did TTEK report for director M. Susan Hardwick?

Tetra Tech reported that director M. Susan Hardwick received 1,754 restricted stock units on 01/26/2026. Each RSU represents a contingent right to receive one share of Tetra Tech common stock, granted at a price of $0 per unit and held directly.

How many restricted stock units were granted to the TTEK director in this Form 4?

The Form 4 shows a grant of 1,754 restricted stock units to director M. Susan Hardwick. These RSUs give her a contingent right to receive an equal number of Tetra Tech common shares, and she beneficially owns 1,754 derivative securities following the reported transaction.

When do M. Susan Hardwick’s TTEK RSUs vest and become exercisable?

The RSUs granted to M. Susan Hardwick vest and become exercisable as to 100% of the shares on the first anniversary of the 01/26/2026 grant date. At that time, the units are exercisable and convert into Tetra Tech common stock without a stated expiration date.

What is the exercise price and expiration date of the TTEK RSUs reported?

The restricted stock units reported for Tetra Tech have an exercise price of $0 per unit and do not have a set expiration date. They become exercisable when they vest on the first anniversary of the grant date, providing shares of common stock upon settlement.

Is the TTEK director’s RSU ownership reported as direct or indirect?

The Form 4 reports M. Susan Hardwick’s ownership of the 1,754 restricted stock units as direct. No separate entity or indirect ownership structure is indicated in the filing, and there are no footnote disclaimers altering her beneficial ownership of these derivative securities.

What type of security was reported in this TTEK Form 4 filing?

The filing reports derivative securities described as restricted stock units, identified as “RESTRICTED STOCK UNITS (RIGHT TO RECEIVE).” Each unit represents a contingent right to receive one share of Tetra Tech common stock, subject to vesting on the first anniversary of the grant date.