401(k) · DOL Form 5500 · 2024

Trinseo, LLC 401(k) Plan

Data updated 2026-08-25

$49M
Total assets Below avg plan size
206
Participants Below avg headcount
84th
Percentile by assets National rank
$240,003
Avg per participant Above avg balance/head
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Official DOL plan name: Altuglas LLC 401(k) Plan · Sponsored by Trinseo, LLC · Pennsylvania · Manufacturing

$49M in assets, 206 participants

Trinseo, LLC's Altuglas LLC 401(k) Plan reported $49M in total assets and 206 participants in its 2024 DOL Form 5500 filing, ranking in the 84th 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.

  • #13,735 in Manufacturing (17,777 peers)

Coverage in Pennsylvania

Altuglas LLC 401(k) Plan covers 206 participants in Pennsylvania, about 25% of the average Pennsylvania filer (state average ~822 per filing). Assets: $49M.

#13,735
in Manufacturing (17,777 peers)
+14.4%
assets growth YoY
0.5×
vs typical plan assets (national mean)

Altuglas LLC 401(k) Plan's outsized position by total assets

Altuglas LLC 401(k) Plan vs every filed plan by assets

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

$49,440,586 Top 16% higher than 84% 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

Altuglas LLC 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. Altuglas LLC 401(k) Plan sits mid-pack in the medium band (206 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Altuglas LLC 401(k) Plan reported net income fell from $9M in the plan year 2023 filing to $6M in the plan year 2024 filing.
  • Altuglas LLC 401(k) Plan end-of-year assets rose from $43M in the plan year 2023 filing to $49M in the plan year 2024 filing.
  • Altuglas LLC 401(k) Plan reported participants fell from 236 in the plan year 2023 filing to 206 in the plan year 2024 filing.

See the national 2023→2024 release diff →

EBSA filing schedule strip

Filing strip 853517505 · Trinseo, LLC PY 2024 · 401(k)

Altuglas LLC 401(k) Plan · $49M · 206 · 84th

  • SCH $49M
  • SCH 206
  • SCH 84th
  • SCH 401(k)
  • SCH near Pinnacle Technical Resources 401(k) Plan
  • SCH ind #13735

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 Pennsylvania →

Altuglas LLC 401(k) Plan in the asset neighbourhood

Twin Rivers Technologies Plan$49MRelevant Industrial 401(k) PlanRelevant Industrial 401(k) P…$49MAltuglas LLC 401(k) Plan$49MPinnacle Technical Resources 401(k) PlanPinnacle Technical Resources…$49MWarner Pacific Insurance Services, Inc. Retirement PlanWarner Pacific Insurance Ser…$49M
End-of-year total assets ($M) among Altuglas LLC 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Pennsylvania filing particulars

Total Assets (Beginning of Year)$43M
Net Assets (End of Year)$49M
Net Income$6M
Employer EIN853517505
Plan Effective Date2021-07-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Trinseo, LLC)

Sponsor-wide plan assets over time

All Trinseo, LLC plans reported in each filing year

Latest sponsor-wide plan assets
$49M 43.3807290348045% vs 2022
2024 filing year
$30M$35M$40M$45M$50M$55M 202220232024 $34.5M $49.4M ▲ +43.4%
Year Plans Participants Total Assets
2022 1 217 $34M
2023 1 236 $43M
2024 1 206 $49M

Nearby 401(k) Plans in Pennsylvania

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

Altuglas LLC 401(k) Plan vs. nearby 401(k) plans in Pennsylvania, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000100000 -50510152025 Total assets ($B) Participants Altuglas LLC 401(k) Plan, Total assets ($B): 0.049440586 · Participants: 206Altuglas LLC 401(k) PlanComcast Corporation Retirement - Investment Plan, Total assets ($B): 19.687957793 · Participants: 90495Comcast Corporation Retirement - Investment PlanThe Cigna Group 401(k) Plan, Total assets ($B): 14.20308608 · Participants: 63634The Cigna Group 401(k) PlanThe Vanguard Retirement and Savings Plan, Total assets ($B): 11.084818612 · Participants: 18066The Vanguard Retirement and Savings PlanThermo Fisher Scientific Inc. 401(k) Retirement Plan, Total assets ($B): 10.263366209 · Participants: 36150Thermo Fisher Scientific Inc. 401(k) Retirement PlanThe PNC Financial Services Group, Inc. Incentive Savings Plan, Total assets ($B): 10.189629 · Participants: 54604The PNC Financial Services Group, Inc. Incentive Savings Plan
Altuglas LLC 401(k) Plan vs. nearby 401(k) plans in Pennsylvania, assets vs. participants
Compare Altuglas LLC 401(k) Plan side-by-side with 3 peers →

Altuglas LLC 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Pennsylvania, the nearest 401(k) by assets is Pinnacle Technical Resources 401(k) Plan in TX ($49M); by covered participants it is Fairwave Holdings 401(k) Savings Plan in MO (206 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($49M here).

Similar participant headcount

Nearest other-state filings by covered participants (206 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 Altuglas LLC 401(k) Plan assets move in 2024? ▼
Altuglas LLC 401(k) Plan grew at a solid clip - up 14.4% during 2024, from $43M to $49M. Reported net income was $6M.
How have Trinseo, LLC plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Trinseo, LLC's sponsor-wide assets grew 43.4%, from $34M to $49M.
Where does Altuglas LLC 401(k) Plan rank by assets among Form 5500 filers? ▼
Altuglas LLC 401(k) Plan ranks in the 84th 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 Altuglas LLC 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Pinnacle Technical Resources 401(k) Plan in TX ($49M, 2,029 participants).
Which 401(k) plans cover a similar participant headcount to Altuglas LLC 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Fairwave Holdings 401(k) Savings Plan in MO (206 participants, $584K 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 853517505.

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.