Tetra Tech Inc 8-K Filing

FAQ

Key Financial Figures

• $0.01 — nge on which registered Common Stock, $0.01 par value TTEK The Nasdaq Stock Mar
• $110,000 — will receive (1) an annual retainer of $110,000; (2) $2,000 for each meeting attended,
• $2,000 — (1) an annual retainer of $110,000; (2) $2,000 for each meeting attended, when the num
• $175,000 — y award with a grant date fair value of $175,000, consisting sixty percent of performanc

Filing Documents

• tm2534127d1_8k.htm (8-K) — 32KB
• tm2534127d1_ex99-1.htm (EX-99.1) — 7KB
• tm2534127d1_ex99-2.htm (EX-99.2) — 7KB
• tm2534127d1_ex99-1img01.jpg (GRAPHIC) — 13KB
• tm2534127d1_ex99-2img01.jpg (GRAPHIC) — 13KB
• 0001104659-25-123764.txt ( ) — 250KB
• ttek-20251222.xsd (EX-101.SCH) — 3KB
• ttek-20251222_lab.xml (EX-101.LAB) — 33KB
• ttek-20251222_pre.xml (EX-101.PRE) — 22KB
• tm2534127d1_8k_htm.xml (XML) — 3KB

02. Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers

Item 5.02. Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers. On December 22, 2025, Tetra Tech, Inc. (the "Company") announced that Jeffrey R. Feeler and M. Susan Hardwick have been appointed to the Board of Directors of the Company (the "Board"), effective December 29, 2025, to serve until the next Annual Meeting of Stockholders or until their successors have been duly chosen and qualified. The Board will consist of eight members, including Mr. Feeler and Ms. Hardwick, at that time. Mr. Feeler will serve as a member of the Audit Committee and Compensation Committee. Ms. Hardwick will serve as a member of the Audit Committee and Nominating and Corporate Governance Committee. Mr. Feeler, 56, most recently served as the Chairman and Chief Executive Officer of US Ecology, where he led the company's transformation into a premier North American environmental services provider, from 2013 to 2022. He also served as US Ecology's Chief Operating Officer and Interim Chief Executive Officer from 2012 to 2013, Chief Financial Officer and Treasurer from 2007 to 2012, and Treasurer and Chief Accounting Officer from 2006 to 2007. He previously worked as Manager, Financial Reporting at MWI Veterinary Supply, Inc. from 2005 to 2006 and as Director, Financial Reporting at Albertsons, Inc. from 2003 to 2005. Mr. Feeler currently serves on the boards of Milestone Environmental and BTS Bioenergy. He is a Certified Public Accountant and holds a B.B.A. in Accounting and Finance from Boise State University. Ms. Hardwick, 63, most recently served as the Chief Executive Officer of American Water, the largest regulated water and wastewater utility in the United States, from 2022 to 2024. Prior to becoming CEO, she served as American Water's Chief Financial Officer from 2019 to 2022. She previously served in roles of increasing responsibility at Vectren Corporation, including Chief Financial Officer from 2014 to 2019, Senior Vice Presid

01. Other Events

Item 8.01. Other Events. On December 22, 2025, the Company issued press releases announcing the matters described in Item 5.02. Copies of the press releases are attached as Exhibit 99.1 and Exhibit 99.2 and are incorporated by reference herein.

01. Financial Statements and Exhibits

Item 9.01. Financial Statements and Exhibits. (d) Exhibits 99.1 Press Release, dated December 22, 2025. 99.2 Press Release, dated December 22, 2025. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 3

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. TETRA TECH, INC. Date: December 22, 2025 By: /s/ Dan L. Batrack Dan L. Batrack Chairman and Chief Executive Officer 4

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View this 8-K filing on SEC EDGAR