401(k) · DOL Form 5500 · 2024

Thornton Tomasetti, Inc. 401(k) Plan

Data updated 2026-08-25

$469M
Total assets Above avg plan size
1,131
Participants Near avg headcount
97th
Percentile by assets National rank
$414,306
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

$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.

  • #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.

#19,744
in Professional & Technical Services (20,173 peers)
+20.4%
assets growth YoY
4.7×
vs typical plan assets (national mean)

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 2024 · DOL Form 5500

$468,579,874 Top 3% higher than 97% of 123,620 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 2024

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

Plan-year 2024 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 (1,131 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • 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 →

Published 5500 schedule card

Filing strip 131251070 · Thornton Tomasetti, Inc. PY 2024 · 401(k)

Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan · $469M · 1,131 · 97th

  • BOY $469M
  • SCH 1,131
  • EBSA 97th
  • PART 401(k)
  • TYPE near Nec Corporation of America Retirement Plan
  • NET ind #19744

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

Presidio LLC 401(k) Plan$469MVenetian Las Vegas Gaming, LLC 401(k) PlanVenetian Las Vegas Gaming, L…$469MNec Corporation of America Retirement PlanNec Corporation of America R…$469MThornton Tomasetti, Inc. 401(k) Profit Sharing PlanThornton Tomasetti, Inc. 401…$469MAnalysis Group, Inc. Employee Savings PlanAnalysis Group, Inc. Employe…$468M
End-of-year total assets ($M) among Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)$389M
Net Assets (End of Year)$469M
Net Income$79M
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 -20020406080 Total assets ($B) Participants Thornton Tomasetti, Inc. 401(k) Profit Sharing Plan, Total assets ($B): 0.468579874 · Participants: 1131Thornton Tomasetti, Inc. 401(k) Profit Sharing PlanIBM 401(k) Plan, Total assets ($B): 60.39355615 · Participants: 52674IBM 401(k) PlanMorgan Stanley 401(k) Plan, Total assets ($B): 22.180692974 · Participants: 53860Morgan Stanley 401(k) PlanPfizer Savings Plan, Total assets ($B): 21.9871528 · Participants: 33309Pfizer Savings PlanThe Pepsico Savings Plan, Total assets ($B): 14.9369507 · Participants: 137398The Pepsico Savings PlanThe Goldman Sachs 401(k) Plan, Total assets ($B): 12.807939404 · Participants: 23227The 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 Nec Corporation of America Retirement Plan in TX ($469M); by covered participants it is Pueblo of Laguna Commercial Enterprises 401(k) Profit Sharing Plan and Trust in NM (1,131 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($469M here).

Similar participant headcount

Nearest other-state filings by covered participants (1,131 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. 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 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).
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 Pueblo of Laguna Commercial Enterprises 401(k) Profit Sharing Plan and Trust in NM (1,131 participants, $9M in assets).

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.

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.