Stocks › TTEK
TETRA TECH INC
TTEK·Nasdaq·
United States·USD
United States·USD$33.38
+0.05 (+0.15%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
TTEK
TETRA TECH INC · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
TTEKS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of TTEK by members of U.S. Congress · 4 on record
| Politician | Stock | Type | Filed | Traded | |
|---|---|---|---|---|---|
 Susie LeeHouse · D · NV |
TTEKTETRA TECH INC · Stock |
Sale $1,001 - $15,000 |
Jul 13, 2021 | Jun 17, 2021 | Filing ↗ |
 Sara JacobsHouse · D · CA |
TTEKTETRA TECH INC · Stock |
Sale $15,001 - $50,000 |
May 28, 2021 | Apr 9, 2021 | Filing ↗ |
| Sara JacobsHouse · D · CA |
TTEKTETRA TECH INC · Stock |
Purchase $15,001 - $50,000 |
Mar 12, 2021 | Feb 19, 2021 | Filing ↗ |
| Susie LeeHouse · D · NV |
TTEKTETRA TECH INC · Stock |
Purchase $1,001 - $15,000 |
Jan 11, 2021 | Dec 22, 2020 | Filing ↗ |
Whale Activity
Position changes in TTEK reported for 2026-06-30 by 19 tracked institutional filers
- Increased7
- New2
- Held0
- Decreased4
- Closed1
- No prior filing5
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 28.7M | $828.4M | increased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 12.5M | $360.2M | decreased |
| VANGUARD CAPITAL MANAGEMENT LLC | 11.7M | $338.8M | increased |
| Energy Income Partners, LLC | 2.4M | $68.5M | new |
| TWO SIGMA INVESTMENTS, LP | 50.6M | $53.1M | increased |
| Point72 Asset Management, L.P. | 46.0M | $48.5M | increased |
| NEUMEIER POMA INVESTMENT COUNSEL LLC | 1.5M | $43.8M | — |
| CITADEL ADVISORS LLC | 1.3M | $37.2M | decreased |
| Point72 Asset Management, L.P. | 1.0M | $29.2M | increased |
| Bridgewater Associates, LP | 608.2K | $17.6M | increased |
| BlackRock, Inc. | 11.7M | $12.3M | increased |
| BOUSSARD & GAVAUDAN GESTION SAS | 6,000 | $6.3M | — |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by TTEK insiders, by quarter · Form 4
Recent Insider Transactions
2,831 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Volpi Kirsten MDirector | Option exercise | +1,700 | $9.59 | $16K | Jun 4, 2026 | Form 4 ↗ |
| Feeler Jeffrey RDirector | Purchase | +1,900 | $26.41 | $50K | May 15, 2026 | Form 4 ↗ |
| Ritrievi Kimberly EDirector | Grant / award | +25.9K | $0.00 | $0 | Mar 16, 2026 | Form 4 ↗ |
| Ritrievi Kimberly EDirector | Option exercise | +1,718 | $0.00 | $0 | Mar 16, 2026 | Form 4 ↗ |
| Ritrievi Kimberly EDirector | Option exercise | +2,125 | $0.00 | $0 | Mar 16, 2026 | Form 4 ↗ |
| Ritrievi Kimberly EDirector | Option exercise | +1,900 | $0.00 | $0 | Mar 16, 2026 | Form 4 ↗ |
| Ritrievi Kimberly EDirector | Option exercise | +795 | $0.00 | $0 | Mar 16, 2026 | Form 4 ↗ |
| Ritrievi Kimberly EDirector | Option exercise | +795 | $0.00 | $0 | Mar 16, 2026 | Form 4 ↗ |
| Ritrievi Kimberly EDirector | Option exercise | +2,050 | $0.00 | $0 | Mar 16, 2026 | Form 4 ↗ |
| Ritrievi Kimberly EDirector | Option exercise | +2,910 | $0.00 | $0 | Mar 16, 2026 | Form 4 ↗ |
| Ritrievi Kimberly EDirector | Option exercise | +1,925 | $0.00 | $0 | Mar 16, 2026 | Form 4 ↗ |
| Ritrievi Kimberly EDirector | Option exercise | +2,250 | $0.00 | $0 | Mar 16, 2026 | Form 4 ↗ |
| Ritrievi Kimberly EDirector | Option exercise | +4,500 | $0.00 | $0 | Mar 16, 2026 | Form 4 ↗ |
| Obiaya ChristianaDirector | Option exercise | +495 | $0.00 | $0 | Feb 19, 2026 | Form 4 ↗ |
| Volpi Kirsten MDirector | Option exercise | +1,000 | $9.59 | $10K | Feb 10, 2026 | Form 4 ↗ |
| BURDICK STEVEN MEVP, CFO | Gift | −11.1K | $0.00 | $0 | Feb 6, 2026 | Form 4 ↗ |
| CARTER BRIAN NSVP, Corporate Controller | Sale | −9,979 | $40.23 | $401K | Feb 4, 2026 | Form 4 ↗ |
| Birkenbeuel GaryDirector | Grant / award | +4,397 | $0.00 | $0 | Jan 12, 2026 | Form 4 ↗ |
| Birkenbeuel GaryDirector | Option exercise | +1,590 | $0.00 | $0 | Jan 12, 2026 | Form 4 ↗ |
| Ritrievi Kimberly EDirector | Grant / award | +2,208 | $0.00 | $0 | Jan 12, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding TTEK · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF iShares Trust | 8.9M | $256.6M | 0.21% | Jun 30, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 8.2M | $238.3M | 0.01% | Jun 30, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 6.0M | $172.0M | 0.09% | Jun 30, 2026 |
| FULLERTHALER BEHAVIORAL SMALL CAP EQUITY Capitol Series Trust | 4.7M | $135.8M | 1.07% | Jun 30, 2026 |
| New Perspective Fund | 4.1M | $117.5M | 0.07% | Jun 30, 2026 |
| VANGUARD SMALL-CAP VALUE INDEX FUND VANGUARD INDEX FUNDS | 3.8M | $108.9M | 0.16% | Jun 30, 2026 |
| SMALLCAP World Fund Inc | 3.5M | $100.6M | 0.11% | Jun 30, 2026 |
| Fidelity Series Value Discovery Fund Fidelity Devonshire Trust | 3.0M | $100.0M | 0.56% | Jul 31, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 3.0M | $86.0M | 0.09% | Jun 30, 2026 |
| Growth Fund AMERICAN FUNDS INSURANCE SERIES | 2.2M | $63.3M | 0.11% | Jun 30, 2026 |
Mutual funds and ETFs whose N-PORT filings list TTEK's shares (CUSIP 88162G103), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
No 13D/13G beneficial-ownership filings on record.
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming TETRA TECH INC as client
No lobbying filings found naming TETRA TECH INC as the client.
Government Contracts
Federal awards to TETRA TECH INC · USAspending
No federal contract awards found for TETRA TECH INC.
U.S. Patents
Recent USPTO applications naming TETRA TECH INC
No USPTO patent applications found for TETRA TECH INC.
Annual Financials
From TTEK's 10-K filings · XBRL
No annual XBRL figures on record for TTEK. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
- 5-for-1Stock splitSep 9, 2024
- 5-for-4Stock splitDec 18, 2001
- 5-for-4Stock splitJun 16, 1999
- 5-for-4Stock splitSep 16, 1998
- 5-for-4Stock splitDec 2, 1997
- 5-for-4Stock splitJun 24, 1996
- 5-for-4Stock splitJun 26, 1995
- 5-for-4Stock splitSep 19, 1994
- 5-for-4Stock splitNov 15, 1993
- 5-for-4Stock splitDec 15, 1992
Split dates and ratios from the price history · Close Prices from Tiingo.com
About TETRA TECH INC
From SEC EDGAR company records
Industry (SIC 8711)Services-Engineering Services
SectorIndustrials
HeadquartersPASADENA, CA
IncorporatedDE
SEC CIK0000831641 ↗