TETRA TECH INC

For the period ended Sep 28, 2025. Filed Nov 20, 2025.

About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Nov 20, 2025

TTEK$40.65-1.1%Stored close · as of Nov 10, 2026

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Contents

Item 15. Exhibits, Financial Statement Schedules

(a)	Documents filed as part of this report	Page
1	Consolidated financial statements
	Consolidated Balance Sheets at September 28, 2025 and September 29, 2024	48
	Consolidated Statements of Income for the fiscal years ended September 28, 2025, September 29, 2024 and October 1, 2023	49
	Consolidated Statements of Comprehensive Income for the fiscal years ended September 28, 2025, September 29, 2024, and October 1, 2023	50
	Consolidated Statements of Cash Flows for the fiscal years ended September 28, 2025, September 29, 2024 and October 1, 2023	51
	Consolidated Statements of Equity for the fiscal years ended September 28, 2025, September 29, 2024 and October 1, 2023	52
	Notes to Consolidated Financial Statements	54
Report of Independent Registered Public Accounting Firm (PCAOB ID 238)
2	Consolidated financial statement Schedule
	Schedule II – Valuation and Qualifying Accounts and Reserves for the fiscal years ended September 28, 2025, September 29, 2024 and October 1, 2023	90
All other schedules are omitted because they are neither applicable nor required
3	Exhibits
	The exhibit list in the Index to Exhibits is incorporated by reference as the list of exhibits required as part of this Report.	91

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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.