401(k) · DOL Form 5500 · 2024

Tetra Tech, Inc. 401(k) Plan

Data updated 2026-08-11

$2.2B
Total assets
11,882
Participants
99th
Percentile by assets
$181,821
Avg per participant
PlainRetire home → About this data

Official DOL plan name: Tetra Tech, Inc. and Subsidiaries Retirement Plan · Sponsored by Tetra Tech, Inc. · Connecticut · Professional & Technical Services

$2.2B in assets, 11,882 participants

Tetra Tech, Inc.'s Tetra Tech, Inc. and Subsidiaries Retirement Plan reported $2.2B in total assets and 11,882 participants in its 2024 DOL Form 5500 filing, ranking in the 99th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

  • 99th percentile by assets (of 123,622 plans)
  • #20,085 in Professional & Technical Services (20,173 peers)

Coverage in Connecticut

Tetra Tech, Inc. and Subsidiaries Retirement Plan covers 11,882 participants in Connecticut, 17x the typical Connecticut plan (state average ~718 per filing). Assets: $2.2B.

$2.2B
total plan assets (2024 EOY)
11,882
covered participants
99th
percentile by assets (of 123,622 plans)
$181,821
avg assets per participant

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Tetra Tech, Inc. and Subsidiaries Retirement Plan reported net income fell from $381M in the plan year 2023 filing to $178M in the plan year 2024 filing.
  • Tetra Tech, Inc. and Subsidiaries Retirement Plan reported participants rose from 10,689 in the plan year 2023 filing to 11,882 in the plan year 2024 filing.
  • Tetra Tech, Inc. and Subsidiaries Retirement Plan end-of-year assets rose from $2.0B in the plan year 2023 filing to $2.2B in the plan year 2024 filing.

See the national 2023→2024 release diff →

State
Connecticut
Industry
Professional & Technical Services

Participants vs Connecticut filers

In Connecticut, the average filing covers about 718 participants across 1,906 plans. Tetra Tech, Inc. and Subsidiaries Retirement Plan reports 11,882 participants - 17x that state average ($2.2B EOY assets).

Connecticut filing particulars

Total Assets (Beginning of Year)$2.0B
Net Assets (End of Year)$2.2B
Net Income$178M
Employer EIN954148514
Plan Effective Date1988-03-08
Filing StatusFILING RECEIVED

Sponsor Plan History (Tetra Tech, Inc.)

$1.4B$1.6B$1.8B$2B$2.2B$2.4B 202220232024 $1.53B $2.16B ▲ +41.2%
Total plan assets by year, all Tetra Tech, Inc. plans on file
Year Plans Participants Total Assets
2022 2 9,967 $1.5B
2023 2 10,703 $2.0B
2024 2 11,996 $2.2B

Nearby 401(k) Plans in Connecticut

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Tetra Tech, Inc. and Subsidiaries Retirement Plan vs. nearby 401(k) plans in Connecticut, assets vs. participants

Tetra Tech, Inc. and Subsidiaries Retirement Plan vs. nearby 401(k) plans in Connecticut, assets vs. participants Scatter plot of 6 data points. 050000100000150000 -20020406080 Total assets ($B) Participants Tetra Tech, Inc. and…Rtx Savings PlanCiti Retirement Savi…The Hartford Investm…Eversource 401(k) PlanXerox Corporation Sa…
Tetra Tech, Inc. and Subsidiaries Retirement Plan vs. nearby 401(k) plans in Connecticut, assets vs. participants
Compare Tetra Tech, Inc. and Subsidiaries Retire… side-by-side with 3 peers →

Scale composition for Tetra Tech, Inc. and Subsidiaries Retirement Plan

Tetra Tech, Inc. and Subsidiaries Retirement Plan reports $2.2B in end-of-year assets across 11,882 participants (0.018% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.013% of 93,925,755 covered participants) - about $181,821 per participant (1.3x the national average assets-per-participant) . Net income for plan year 2024 was $178M.

This plan identity (EIN 954148514, plan #001) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $1.5B to $2.2B (+41.0%) while covered participants moved from 9,951 to 11,882 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 9,951 $1.5B Open filing
2023 10,689 $2.0B Open filing
2024 · index core 11,882 $2.2B This page

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Tetra Tech, Inc. and Subsidiaries Retirement Plan by total assets, not by location.

Frequently Asked Questions

How did Tetra Tech, Inc. and Subsidiaries Retirement Plan assets move in 2024? ▼
Tetra Tech, Inc. and Subsidiaries Retirement Plan grew at a solid clip - up 9.1% during 2024, from $2.0B to $2.2B. Reported net income was $178M.
How have Tetra Tech, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Tetra Tech, Inc.'s sponsor-wide assets grew 41.1%, from $1.5B to $2.2B.
Where does Tetra Tech, Inc. and Subsidiaries Retirement Plan rank by assets among Form 5500 filers? ▼
Tetra Tech, Inc. and Subsidiaries Retirement Plan ranks in the 99th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (among the largest 1% of all filed plans).
Which 401(k) plans are similar in size to Tetra Tech, Inc. and Subsidiaries Retirement Plan? ▼
Among 401(k) plans in other states, the closest by assets is Medamerica 401(k) Profit Sharing Plan for Employees of Vituity in CA ($2.2B, 5,429 participants).

Next read for Tetra Tech, Inc. and Subsidiaries Retire…

Filing takeaways

Ways to act on Tetra Tech, Inc. and Subsidiaries Retirement Plan's numbers.

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 954148514.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.