401(k) · DOL Form 5500 · 2022

Thornton Tomasetti, Inc. 401(k) Plan

Data updated 2026-08-25

$318M
Total assets Above avg plan size
1,083
Participants Near avg headcount
97th
Percentile by assets National rank
$293,296
Avg per participant High balance/head
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Official DOL plan name: Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan · Sponsored by Thornton Tomasetti, Inc. · New York · Professional & Technical Services

$318M in assets, 1,083 participants

Thornton Tomasetti, Inc.'s Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan reported $318M in total assets and 1,083 participants in its 2022 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.

  • #21,087 in Professional & Technical Services (21,562 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, $318M for 1,083 participants (~$293,296/participant), down 19.7% in 2022.

#21,087
in Professional & Technical Services (21,562 peers)
-19.7%
assets change YoY
3.2×
vs typical plan assets (national mean)

The plan reported a net loss of $78M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan's outsized position by total assets

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan vs every filed plan by assets

End-of-year total assets · plan year 2022 · DOL Form 5500

$317,639,707 Top 3% higher than 97% of 139,123 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2022

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan's large-plan peer group by participant headcount

Plan-year 2022 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan lands in the large band (1,083 participants).

DOL schedule card

Filing strip 131251070 · Thornton Tomasetti, Inc. PY 2022 · 401(k)

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan · $318M · 1,083 · 97th

  • NET $318M
  • NET 1,083
  • NET 97th
  • NET 401(k)
  • NET near James Hardie Building Products, Inc. Retirement Plan
  • NET ind #21087

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Professional & Technical Services retirement plans → · Plans in New York →

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan in the asset neighbourhood

James Hardie Building Products, Inc. Retirement PlanJames Hardie Building Produc…$318MThornton Tomasetti, Inc. 401(k) Profit Sharing PlanThornton Tomasetti, Inc. 401…$318MMultiplan, Inc. 401(k) Plan$318MDropbox 401(k) Plan$317MTcf 401(k) Plan$317M
End-of-year total assets ($M) among Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2022.

Scale-class filing particulars (2022)

Total Assets (Beginning of Year)$396M
Net Assets (End of Year)$318M
Net Income-$78M
Employer EIN131251070
Plan Effective Date1992-02-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Thornton Tomasetti, Inc.)

Sponsor-wide plan assets over time

All Thornton Tomasetti, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$469M 47.519300538833456% vs 2022
2024 filing year
$300M$350M$400M$450M$500M 202220232024 $318M $469M ▲ +47.5%
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 Scatter plot of 6 data points. -50000050000100000150000 -200204060 Total assets ($B) Participants Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan, Total assets ($B): 0.317639707 · Participants: 1083Thornton Tomasetti, Inc. 401(k) Profit Sharing PlanIBM 401 (K) Plus Plan, Total assets ($B): 53.363875208 · Participants: 56376IBM 401 (K) Plus PlanMorgan Stanley 401(k) Plan, Total assets ($B): 16.415517176 · Participants: 42924Morgan Stanley 401(k) PlanThe Pepsico Savings Plan, Total assets ($B): 12.067222 · Participants: 129846The Pepsico Savings PlanDeloitte 401(k) Plan, Total assets ($B): 10.966899716 · Participants: 74687Deloitte 401(k) PlanThe Goldman Sachs 401(k) Plan, Total assets ($B): 9.681988279 · Participants: 22650The Goldman Sachs 401(k) Plan
Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan vs. nearby 401(k) plans in New York, assets vs. participants
Compare Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan side-by-side with 3 peers →

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan's out-of-state 401(k) peers by assets and headcount

Outside New York, the nearest 401(k) by assets is James Hardie Building Products, Inc. Retirement Plan in IL ($318M); by covered participants it is Mariner Wealth Advisors, LLC 401(k) Plan in KS (1,083 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($318M here).

Similar participant headcount

Nearest other-state filings by covered participants (1,083 participants); asset peers above are excluded.

DOL Form 5500 plan year 2022. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan assets move in 2022? ▼
Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan declined sharply - down 19.7% during 2022, from $396M to $318M. Reported net income was -$78M.
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 139,126 plans that reported assets for plan year 2022 (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 James Hardie Building Products, Inc. Retirement Plan in IL ($318M, 3,277 participants).
Which 401(k) plans cover a similar participant headcount to Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Mariner Wealth Advisors, LLC 401(k) Plan in KS (1,083 participants, $128M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2022.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 131251070.

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.