401(k) · DOL Form 5500 · 2024

Thornton Tomasetti, Inc. 401(k) Plan

Data updated 2026-08-11

$469M
Total assets: 1,131
Participants: 97th
Percentile by assets: $414,306
Avg per participant

Official DOL plan name: Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan · Sponsored by Thornton Tomasetti, Inc. · New York · Professional & Technical Services

$469M in assets, 1,131 participants

Thornton Tomasetti, Inc.'s Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan reported $469M in total assets and 1,131 participants in its 2024 DOL Form 5500 filing, ranking in the 97th 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.

97th percentile by assets (of 123,622 plans)
#19,744 in Professional & Technical Services (20,173 peers)

Where Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan sits by assets

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan sits in the top 5% of all filed plans by assets, $469M for 1,131 participants (~$414,306/participant), up 20.4% in 2024.

$469M
total plan assets (2024 EOY): 1,131
covered participants: 97th
percentile by assets (of 123,622 plans): $414,306
avg assets per participant

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan end-of-year assets rose from $389M in the plan year 2023 filing to $469M in the plan year 2024 filing.
Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan reported net income rose from $71M in the plan year 2023 filing to $79M in the plan year 2024 filing.
Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan reported participants rose from 1,075 in the plan year 2023 filing to 1,131 in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

New York

Industry

Professional & Technical Services

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan vs the 2024 asset distribution

By assets, Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan outranks 97% of the 123,622 plans that filed a Form 5500 for the 2024 plan year, and holds roughly 4.7x the national average plan size of $100M (721 average participants).

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)	$389M
Net Assets (End of Year)	$469M
Net Income	$79M
Employer EIN	131251070
Plan Effective Date	1992-02-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Thornton Tomasetti, Inc.)

Total plan assets by year, all Thornton Tomasetti, Inc. plans on file

Year	Plans	Participants	Total Assets
2022	1	1,083	$318M
2023	1	1,075	$389M
2024	1	1,131	$469M

Nearby 401(k) Plans in New York

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

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan vs. nearby 401(k) plans in New York, assets vs. participants

IBM 401(k) Plan $60.4B · 52,674
Morgan Stanley 401(k) Plan $22.2B · 53,860
Pfizer Savings Plan $22.0B · 33,309
The Pepsico Savings Plan $14.9B · 137,398
The Goldman Sachs 401(k) Plan $12.8B · 23,227

Compare Thornton Tomasetti, Inc. 401(k) Profit S… side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan by total assets, not by location.

Nec Corporation of America Retirement Plan (TX) $469M · 713
Venetian Las Vegas Gaming, LLC 401(k) Plan (NV) $469M · 8,275
Analysis Group, Inc. Employee Savings Plan (MA) $468M · 1,165
Presidio LLC 401(k) Plan (VA) $469M · 2,676

Frequently Asked Questions

How did Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan assets move in 2024? ▼

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan grew sharply - up 20.4% during 2024, from $389M to $469M. Reported net income was $79M.

How have Thornton Tomasetti, Inc. plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Thornton Tomasetti, Inc.'s sponsor-wide assets grew 47.5%, from $318M to $469M.

Where does Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan rank by assets among Form 5500 filers? ▼

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan ranks in the 97th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top 5% of all filed plans by assets).

Which 401(k) plans are similar in size to Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan? ▼

Among 401(k) plans in other states, the closest by assets is Nec Corporation of America Retirement Plan in TX ($469M, 713 participants).

Next read for Thornton Tomasetti, Inc. 401(k) Profit S…

Scale reading

Ways to act on Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan's numbers.

By total assets, Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan ranks in the top 5% of all filed plans by assets. See the largest plans
Compare it side-by-side against 3 similar 401(k) plans in New York. Compare plans
Thornton Tomasetti, Inc.'s sponsor-wide assets have grown 47.5% since 2022 across 3 plan years on file. More Professional & Technical Services plans

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 131251070.