Stocks / TTEK / Shares Outstanding

Tetra Tech, Inc. Shares Outstanding 2008–2025

Tetra Tech, Inc. reported 261.4M of shares outstanding for fiscal 2025. That was 2.4% lower than fiscal 2024. Compared with fiscal 2020, the change was -2.8%. A falling share count is consistent with net buybacks exceeding issuance over the period, though the filing should be checked for the components.

Latest filed value
261.4M
One-year change
-2.4%
Change since 2020
-2.8%
Latest period end
2025-09-30
Tetra Tech, Inc. Shares Outstanding history from 2008 to 2025FY 2008: 0FY 2009: 306285000FY 2010: 308775000FY 2011: 312475000FY 2012: 319185000FY 2013: 320670000FY 2014: 312955000FY 2015: 296905000FY 2016: 285210000FY 2017: 279365000FY 2018: 276745000FY 2019: 272825000FY 2020: 268985000FY 2021: 269905000FY 2022: 264905000FY 2023: 266238000FY 2024: 267717000FY 2025: 261418000
Annual filed history. Hover chart points for raw values; the accessible table below is the source of record.
Fiscal yearShares OutstandingChange (YoY)
FY 2025261.4M-2.4%
FY 2024267.7M+0.6%
FY 2023266.2M+0.5%
FY 2022264.9M-1.9%
FY 2021269.9M+0.3%
FY 2020269.0M-1.4%
FY 2019272.8M-1.4%
FY 2018276.7M-0.9%
FY 2017279.4M-2.0%
FY 2016285.2M-3.9%
FY 2015296.9M-5.1%
FY 2014313.0M-2.4%
FY 2013320.7M+0.5%
FY 2012319.2M+2.1%
FY 2011312.5M+1.2%
FY 2010308.8M+0.8%
FY 2009306.3M
FY 20080.0M

Source: Tetra Tech, Inc. SEC filings — balance sheet (10-K), split-adjusted. Computed deterministically; refreshed nightly (last updated August 2, 2026). Open TTEK 10-K filings at SEC EDGAR · Methodology · Download CSV.

How to read this history

Tetra Tech, Inc. reported 261.4M of shares outstanding for fiscal 2025. That was 2.4% lower than fiscal 2024. Compared with fiscal 2020, the change was -2.8%. A falling share count is consistent with net buybacks exceeding issuance over the period, though the filing should be checked for the components. Values remain missing when the cached filing does not disclose a comparable line item; they are never estimated. Stock splits, reorganizations and fiscal-calendar changes can reduce comparability.

Prepared and reviewed by the stockportfolio.pro research desk. Corrections: support@stockportfolio.pro.

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Tetra Tech, Inc. — frequently asked questions

What is Tetra Tech, Inc.'s shares outstanding?

Tetra Tech, Inc. (TTEK) reported shares outstanding of 261.4M for fiscal year 2025, per its SEC filings.

Where does this data come from?

Figures are computed from Tetra Tech, Inc.'s official SEC filings (balance sheet (10-K), split-adjusted), refreshed nightly. Not investment advice.

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