Tetra Tech (TTEK) director files Form 3 showing no share ownership

Rhea-AI Filing Summary

Tetra Tech, Inc. director M. Susan Hardwick filed an initial Form 3 insider report in connection with her role as a director of the company as of 12/29/2025. The filing states in the remarks that no securities are beneficially owned, meaning she reported holding no Tetra Tech shares or derivative securities at that time.

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

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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. Date of Event Requiring Statement (Month/Day/Year)
12/29/2025

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

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

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

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

No securities are beneficially owned.

	/s/ Preston Hopson, Attorney-in-Fact for M. Susan Hardwick	01/06/2026
	** 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 5 (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.
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FAQ

What does Tetra Tech (TTEK) disclose in this Form 3 filing?

The Form 3 shows that director M. Susan Hardwick filed as a reporting person of Tetra Tech, Inc. and indicated that she has no beneficial ownership of the company’s securities.

What is M. Susan Hardwick’s relationship to Tetra Tech (TTEK)?

The filing identifies M. Susan Hardwick as a director of Tetra Tech, Inc. and confirms the Form 3 is filed by one reporting person.

Does the TTEK director report owning any Tetra Tech shares?

No. In the remarks section, the Form 3 states, “No securities are beneficially owned.” Table I and Table II list no non-derivative or derivative securities.

Are there any transactions reported in this TTEK Form 3?

No transactions are reported. The insider filing data shows an empty transaction list, consistent with the statement that no securities are beneficially owned.

Is this TTEK Form 3 filed by an individual or a group?

The Form 3 is marked as “Form filed by One Reporting Person”, indicating it relates solely to M. Susan Hardwick.

Who signed the Form 3 related to Tetra Tech (TTEK)?

The Form 3 is signed “/s/ Preston Hopson, Attorney-in-Fact for M. Susan Hardwick”, indicating it was filed under a power of attorney on her behalf.