EntityWire/California business entity search →/TETRA TECH, INC.
Employer with a benefit plan
TETRA TECH, INC.
The Employer Identification Number (EIN) for TETRA TECH, INC. is 95-4148514.
At a glance
- EIN
- 95-4148514 · 954148514
- Legal name
- TETRA TECH, INC.
- Address on file
- 3475 EAST FOOTHILL BLVD., PASADENA, CA 91107
- Records show
- SEC filer; employer with a benefit plan; state registration
- Latest record
- 2026-09-05
State registration
Texas Comptroller active franchise taxpayers file · records as of 2026-09-05
- Texas registration
- Active · Foreign profit corporation
- Source: Texas Comptroller · as of 2026-09-05
- Texas document number
- 0009223306
- Source: Texas Comptroller · as of 2026-09-05
SEC records
SEC EDGAR company filings · records as of 2026-08-06
- SEC CIK
- 0000831641
- Source: SEC · as of 2026-08-06
- Industry (SIC)
- Services-Engineering Services (8711)
- Source: SEC · as of 2026-08-06
- State of incorporation
- DE
- Source: SEC · as of 2026-08-06
- Ticker
- TTEK
- Source: SEC · as of 2026-08-06
- Latest SEC filing
- 4 2026-08-06
- Source: SEC · as of 2026-08-06
Benefit plans
DOL Form 5500 filings (EFAST2) · records as of 2026-07-13
- Benefit plan 2, 2024 filing
- TETRA TECH, INC. PUERTO RICO RETIREMENT PLAN
- Source: DOL 5500 · as of 2026-07-13
- Participants (start of year)
- 120
- Source: DOL 5500 · as of 2026-07-13
- Plan features
- Profit-sharing; ERISA 404(c) plan; Participant-directed; 401(k) feature; 401(m) matching; Automatic enrollment
- Source: DOL 5500 · as of 2026-07-13
- Plan type
- Single-employer plan
- Source: DOL 5500 · as of 2026-07-13
- Business code (NAICS)
- 541330
- Source: DOL 5500 · as of 2026-07-13
- Benefit plan 1, 2024 filing
- TETRA TECH, INC. AND SUBSIDIARIES RETIREMENT PLAN
- Source: DOL 5500 · as of 2026-07-13
- Participants (start of year)
- 15,680
- Source: DOL 5500 · as of 2026-07-13
What this record is
Public filings that carry this EIN (DOL Form 5500 filings (EFAST2), Florida Division of Corporations (Sunbiz) bulk data, SEC EDGAR company filings and Texas Comptroller active franchise taxpayers file), shown as filed. Nothing is scraped from the IRS, and a public-record match is not IRS TIN validation.
What it is not
Registry status, formation date, and registered agent come from the California Secretary of State, Business Programs Division (Business Entities); see the California business entity search.
If something is wrong
A name, address, or classification here is what the source published. To correct the source, file with it; to have this page removed, see corrections and removal.
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