401(k) · DOL Form 5500 · 2023

Trinseo, LLC 401(k) Plan

Data updated 2026-08-25

$137M
Total assets Near avg plan size
391
Participants Below avg headcount
93rd
Percentile by assets National rank
$351,130
Avg per participant High balance/head
PlainRetire home → About this data RSS: change history

Official DOL plan name: Trinseo LLC 401(k) Plan · Sponsored by Trinseo, LLC · Pennsylvania · Manufacturing

$137M in assets, 391 participants

Trinseo, LLC's Trinseo LLC 401(k) Plan reported $137M in total assets and 391 participants in its 2023 DOL Form 5500 filing, ranking in the 93rd 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.

  • #16,744 in Manufacturing (18,722 peers)

Coverage in Pennsylvania

Trinseo LLC 401(k) Plan covers 391 participants in Pennsylvania, about 48% of the average Pennsylvania filer (state average ~822 per filing). Assets: $137M.

#16,744
in Manufacturing (18,722 peers)
+45.4%
assets growth YoY
1.4×
vs typical plan assets (national mean)

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

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

End-of-year total assets · plan year 2023 · DOL Form 5500

$137,291,698 Top 7% higher than 93% of 127,068 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 2023

Trinseo LLC 401(k) Plan among mid-size filed plans by headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Trinseo LLC 401(k) Plan sits mid-pack in the medium band (391 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Trinseo LLC 401(k) Plan reported net income rose from -$18M in the plan year 2022 filing to $21M in the plan year 2023 filing.
  • Trinseo LLC 401(k) Plan end-of-year assets rose from $94M in the plan year 2022 filing to $137M in the plan year 2023 filing.
  • Trinseo LLC 401(k) Plan reported participants fell from 402 in the plan year 2022 filing to 391 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Published 5500 schedule card

Filing strip 800512509 · Trinseo, LLC PY 2023 · 401(k)

Trinseo LLC 401(k) Plan · $137M · 391 · 93rd

  • BOOK $137M
  • BOOK 391
  • BOOK 93rd
  • BOOK 401(k)
  • BOOK near Bracco Diagnostics Savings & Investment Program
  • BOOK ind #16744

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 →

Trinseo LLC 401(k) Plan in the asset neighbourhood

Bracco Diagnostics Savings & Investment ProgramBracco Diagnostics Savings &…$137MAltres 401(k) Retirement Plan$137MTrinseo LLC 401(k) Plan$137MSt Engineering Idirect 401(k) PlanSt Engineering Idirect 401(k…$137MInterior Logic Group 401(k) PlanInterior Logic Group 401(k) …$137M
End-of-year total assets ($M) among Trinseo LLC 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Pennsylvania filing particulars

Total Assets (Beginning of Year)$94M
Net Assets (End of Year)$137M
Net Income$21M
Employer EIN800512509
Plan Effective Date2010-06-17
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
$152M 61.00252554981449% vs 2022
2024 filing year
$80M$100M$120M$140M$160M 202220232024 $94.4M $152M ▲ +61.0%
Year Plans Participants Total Assets
2022 1 402 $94M
2023 1 391 $137M
2024 1 562 $152M

Nearby 401(k) Plans in Pennsylvania

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

Trinseo LLC 401(k) Plan vs. nearby 401(k) plans in Pennsylvania, assets vs. participants Scatter plot of 6 data points. -50000050000100000 -505101520 Total assets ($B) Participants Trinseo LLC 401(k) Plan, Total assets ($B): 0.137291698 · Participants: 391Trinseo LLC 401(k) PlanComcast Corporation Retirement - Investment Plan, Total assets ($B): 17.368669862 · Participants: 93136Comcast Corporation Retirement - Investment PlanCigna 401(k) Plan, Total assets ($B): 13.003870935 · Participants: 66760Cigna 401(k) PlanThe Vanguard Retirement and Savings Plan, Total assets ($B): 9.765617477 · Participants: 18200The Vanguard Retirement and Savings PlanThe PNC Financial Services Group, Inc. Incentive Savings Plan, Total assets ($B): 9.339762 · Participants: 61697The PNC Financial Services Group, Inc. Incentive Savings PlanThe Bank of New York Mellon Corporation 401(k) Savings Plan, Total assets ($B): 8.955655142 · Participants: 25184The Bank of New York Mellon Corporation 401(k) Savings Plan
Trinseo LLC 401(k) Plan vs. nearby 401(k) plans in Pennsylvania, assets vs. participants
Compare Trinseo LLC 401(k) Plan side-by-side with 3 peers →

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

Outside Pennsylvania, the nearest 401(k) by assets is Bracco Diagnostics Savings & Investment Program in NJ ($137M); by covered participants it is The Bmw Management, Inc. Employee 401(k) Plan in CA (391 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($137M here).

Similar participant headcount

Nearest other-state filings by covered participants (391 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Trinseo LLC 401(k) Plan assets move in 2023? ▼
Trinseo LLC 401(k) Plan surged - up 45.4% during 2023, from $94M to $137M. Reported net income was $21M.
How have Trinseo, LLC plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Trinseo, LLC's sponsor-wide assets grew 61.0%, from $94M to $152M.
Where does Trinseo LLC 401(k) Plan rank by assets among Form 5500 filers? ▼
Trinseo LLC 401(k) Plan ranks in the 93rd percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top 10% of all filed plans by assets).
Which 401(k) plans are similar in size to Trinseo LLC 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Bracco Diagnostics Savings & Investment Program in NJ ($137M, 332 participants).
Which 401(k) plans cover a similar participant headcount to Trinseo LLC 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is The Bmw Management, Inc. Employee 401(k) Plan in CA (391 participants, $343K in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 800512509.

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.