401(k) · DOL Form 5500 · 2024

Aspen Aerogels, Inc. 401(k) Plan

Data updated 2026-08-25

$41M
Total assets Below avg plan size
517
Participants Below avg headcount
82nd
Percentile by assets National rank
$78,700
Avg per participant Below avg balance/head
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Official DOL plan name: Aspen Aerogels, Inc. 401(k) Plan · Sponsored by Aspen Aerogels, Inc. · Massachusetts · Manufacturing

$41M in assets, 517 participants

Aspen Aerogels, Inc.'s Aspen Aerogels, Inc. 401(k) Plan reported $41M in total assets and 517 participants in its 2024 DOL Form 5500 filing, ranking in the 82nd 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.

  • #13,208 in Manufacturing (17,777 peers)

Where Aspen Aerogels, Inc. 401(k) Plan sits by assets

Aspen Aerogels, Inc. 401(k) Plan sits in the top quartile of all filed plans by assets, $41M for 517 participants (~$78,700/participant), up 21.9% in 2024.

#13,208
in Manufacturing (17,777 peers)
+21.9%
assets growth YoY
0.4×
vs typical plan assets (national mean)

Aspen Aerogels, Inc. 401(k) Plan's outsized position by total assets

Aspen Aerogels, Inc. 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$40,687,824 Top 18% higher than 82% 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

Aspen Aerogels, Inc. 401(k) Plan among mid-size filed plans by headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Aspen Aerogels, Inc. 401(k) Plan sits mid-pack in the medium band (517 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Aspen Aerogels, Inc. 401(k) Plan end-of-year assets rose from $33M in the plan year 2023 filing to $41M in the plan year 2024 filing.
  • Aspen Aerogels, Inc. 401(k) Plan reported net income fell from $9M in the plan year 2023 filing to $7M in the plan year 2024 filing.
  • Aspen Aerogels, Inc. 401(k) Plan reported participants rose from 507 in the plan year 2023 filing to 517 in the plan year 2024 filing.

See the national 2023→2024 release diff →

Plan-year Form 5500 strip

Filing strip 043559972 · Aspen Aerogels, Inc. PY 2024 · 401(k)

Aspen Aerogels, Inc. 401(k) Plan · $41M · 517 · 82nd

  • SCH $41M
  • SCH 517
  • SCH 82nd
  • SCH 401(k)
  • SCH near Jm Search & Company, Inc. 401(k) Profit Sharing Plan
  • SCH ind #13208

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 Manufacturing retirement plans → · Plans in Massachusetts →

Aspen Aerogels, Inc. 401(k) Plan in the asset neighbourhood

Thoma Bravo 401(k) Plan$41MAspen Aerogels, Inc. 401(k) PlanAspen Aerogels, Inc. 401(k) …$41MJm Search & Company, Inc. 401(k) Profit Sharing PlanJm Search & Company, Inc. 40…$41MOwen-Ames-Kimball Co. Retirement PlanOwen-Ames-Kimball Co. Retire…$41MImax Corporation 401(k) Retirement PlanImax Corporation 401(k) Reti…$41M
End-of-year total assets ($M) among Aspen Aerogels, Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)$33M
Net Assets (End of Year)$41M
Net Income$7M
Employer EIN043559972
Plan Effective Date2005-05-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Aspen Aerogels, Inc.)

Sponsor-wide plan assets over time

All Aspen Aerogels, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$41M 66.53697453628494% vs 2022
2024 filing year
$20M$25M$30M$35M$40M$45M 202220232024 $24.4M $40.7M ▲ +66.6%
Year Plans Participants Total Assets
2022 1 397 $24M
2023 1 507 $33M
2024 1 517 $41M

Nearby 401(k) Plans in Massachusetts

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

Aspen Aerogels, Inc. 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -10010203040 Total assets ($B) Participants Aspen Aerogels, Inc. 401(k) Plan, Total assets ($B): 0.040687824 · Participants: 517Aspen Aerogels, Inc. 401(k) PlanFidelity Retirement Savings Plan, Total assets ($B): 34.201609937 · Participants: 66907Fidelity Retirement Savings PlanLiberty Mutual 401(k) Plan, Total assets ($B): 11.352606499 · Participants: 34618Liberty Mutual 401(k) PlanMassachusetts Institute of Technology Supplemental 401(k) Plan, Total assets ($B): 7.720373045 · Participants: 14762Massachusetts Institute of Technology Supplemental 401(k) PlanBoston Scientific Corporation 401(k) Retirement Savings Plan, Total assets ($B): 6.775289067 · Participants: 20639Boston Scientific Corporation 401(k) Retirement Savings PlanState Street Salary Savings Program, Total assets ($B): 6.532301643 · Participants: 12777State Street Salary Savings Program
Aspen Aerogels, Inc. 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Aspen Aerogels, Inc. 401(k) Plan side-by-side with 3 peers →

Aspen Aerogels, Inc. 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Jm Search & Company, Inc. 401(k) Profit Sharing Plan in PA ($41M); by covered participants it is Magnitude 7 Metals 401(k) Plan in MO (517 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($41M here).

Similar participant headcount

Nearest other-state filings by covered participants (517 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 Aspen Aerogels, Inc. 401(k) Plan assets move in 2024? ▼
Aspen Aerogels, Inc. 401(k) Plan grew sharply - up 21.9% during 2024, from $33M to $41M. Reported net income was $7M.
How have Aspen Aerogels, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Aspen Aerogels, Inc.'s sponsor-wide assets grew 66.5%, from $24M to $41M.
Where does Aspen Aerogels, Inc. 401(k) Plan rank by assets among Form 5500 filers? ▼
Aspen Aerogels, Inc. 401(k) Plan ranks in the 82nd percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Aspen Aerogels, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Jm Search & Company, Inc. 401(k) Profit Sharing Plan in PA ($41M, 180 participants).
Which 401(k) plans cover a similar participant headcount to Aspen Aerogels, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Magnitude 7 Metals 401(k) Plan in MO (517 participants, N/A 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 043559972.

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.