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BCS

Current Report · Items 8.01, 9.01 · 8-K

Tetra Tech, Inc.

TTEKNASDAQEQUITYCurrent

Other Events

Item 8.01. Other Events. On September 10, 2026, Tetra Tech announced that its Board of Directors has authorized a $500 million increase to its share repurchase program. A copy of the press release is attached to this Current Report as Exhibit 99.1.

Filed Sep 10, 2026Accepted Sep 10, 2026, 9:00 AM EDTCIK 831641Accession 0001104659-26-106564
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Company context

Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide. With more than 25,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science® to address the entire water cycle, protect and restore the environment, and design sustainable and resilient infrastructure. For more information about Tetra Tech, please visit tetratech.com or follow us on LinkedIn and Facebook.

Current securities

Recent company filings

  1. Results of Operations and Financial Condition · Other EventsNov 12, 2026
  2. S-8 filingAug 5, 2026
  3. 10-Q filingJul 31, 2026
  4. Results of Operations and Financial Condition · Other EventsJul 29, 2026
  5. 10-Q filingMay 1, 2026

Registered securities in this filing

TETRA TECH, INC. · 8-K · Filed 2026-09-10

As filed in this accession. Current/historical status below comes from the governed listing record; the cover itself remains exact to this filing.

Common Stock, $0.01 par value

Symbol
TTEK
Exchange
NASDAQ
Classification
COMMON
Status
Current
Filing context

Context: AsOf2026-09-10

Dimensions: Not supplied

Accession 000110465926106564 · 1 registered-security cover member

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Disclosure sections

Items 8.01, 9.01

Select an item to read the extracted section. The as-filed document remains the primary evidence.

Item 8.01Item 8.01 - Other Events
Item 8.01. Other Events. On September 10, 2026, Tetra Tech announced that its Board of Directors has authorized a $500 million increase to its share repurchase program. A copy of the press release is attached to this Current Report as Exhibit 99.1.
Filed exhibits (1)
EX-99.1 (by filename) tm2625143d1_ex99-1.htm

EX-99.1 2 tm2625143d1_ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 NEWS RELEASE September 10, 2026 ────────────────────── Tetra Tech Announces $500 Million Increase to its Share Repurchase Program Pasadena, California. Tetra Tech, Inc. (NASDAQ: TTEK), a global provider of high-end technical and engineering services, Leading with Science ® in water, environment and sustainable infrastructure, announced today that its Board of Directors approved an addtional $500 million share repurchase authorization. This more than doubles the amount remaining under the Company’s existing share repurchase program at the end of the third quarter of fiscal 2026, increasing total available share repurchases to $898 million. For the twelve months ended the third quarter of fiscal 2026, Tetra Tech generated $567 million in cash flow from operations and returned $322 million to shareholders through share repurchases and dividends. During this period, the Company also advanced its Leading with Science® differentiation with the completion of strategic acquisitions that added new clients and technical capabilities. The strong cash flow also enabled the Company to continue deleveraging its balance s…

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