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TETRA TECH INC

For the period ended Dec 28, 2025. Filed Jan 30, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Dec 28, 2025 · Filed Jan 30, 2026

TTEK$41.09+2.0%Stored close · as of Nov 9, 2026

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Item 6. Exhibits

The following documents are filed as Exhibits to this Report:

31.1Chief Executive Officer Certification pursuant to Rule 13a-14(a)/15d-14(a).
31.2Chief Financial Officer Certification pursuant to Rule 13a-14(a)/15d-14(a).
32.1Certification of Chief Executive Officer pursuant to Section 1350.
32.2Certification of Chief Financial Officer pursuant to Section 1350.
95Mine Safety Disclosure.
101The following financial information from our Company’s Quarterly Report on Form 10-Q, for the period ended December 28, 2025, formatted in Inline eXtensible Business Reporting Language: (i) Consolidated Balance Sheets (ii) Consolidated Statements of Income, (iii) Consolidated Statements of Comprehensive Income, (iv) Consolidated Statements of Cash Flows, (v) Consolidated Statements of Stockholders' Equity, (vi) Notes to Consolidated Financial Statements.
104Cover Page Interactive Date File (formatted as Inline XBRL and contained in Exhibit 101).
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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.