Trinseo, LLC 401(k) Review & Grade
Trinseo LLC 401k Plan
Berwyn, PAManufacturing550 active participantsPlan year 2024✓ Auto-enroll
Estimate from the plan's Form 5500 filing · How we grade
$9,189Employer $ per active participant
$10,604Employee $ saved per active participant
0.09%Direct admin cost, % of plan assets
$152.0MNet plan assets, end of year
$200,822Average balance per account
Score breakdown
- Employer generosity47.7 / 5095th percentile for employer $ per participant
- Low cost19.2 / 2577th percentile for low admin cost vs. same-size plans
- Employee saving13.7 / 1591th percentile for employee $ per participant
- Plan features10 / 10Auto-enrollment, Default investment
- Red-flag deductions-13 pts2 issues reported on the filing
Total score78 / 100 · Grade A
This plan vs. peers
Peers: Manufacturing plans with 500–2,499 active participants (2,376 plans).
| Measure | Percentile |
|---|---|
| Employer $ per participant | 95th |
| Lower admin cost | 77th |
| Employee saving | 91th |
| Peers that auto-enroll | 59% |
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Red flags from the filing
Late deposits: the filing says some employee contributions were not sent to the plan on time ($224,979 reported). That's money taken from paychecks that sat with the employer longer than the law allows.
Corrective distributions: the plan refunded $4,912 in contributions, which usually means it failed annual nondiscrimination testing.
What to do if you're in this plan
- Trinseo put in about $9,189 per active participant, more than the typical peer ($2,320). Contribute at least enough to collect the full match. Skipping it leaves part of your pay on the table.
- The filing shows total dollars, not the match formula. Ask HR for the Summary Plan Description so you know the exact match and vesting schedule.
- Fund expense ratios aren't in the filing. Look them up in your 404(a)(5) fee disclosure and favor low-cost index or target-date funds.
- The plan auto-enrolls employees. Check your default contribution rate. Defaults are often lower than what it takes to get the full match.
- The plan reported late deposits of employee contributions. Compare your pay stubs with your account statements, and contact the plan administrator if money shows up late.
- Changing jobs? You can usually leave the money in the plan, move it to your new employer's plan, or roll it into an IRA. Don't cash out: you'd owe taxes and possibly a 10% penalty.
The raw numbers from the filing
| Employer contributions | $5,049,546 |
| Participant (employee) contributions | $5,826,996 |
| Other contributions (incl. rollovers in) | $2,834,363 |
| Administrative expenses paid from the plan | $129,395 |
| Contract administrator fees | $300 |
| Investment advisory & management fees | $12,240 |
| Benefits paid out | $19,503,712 |
| Net assets, start / end of year | $137.3M / $152.0M |
| Active participants, start / end of year | 562 / 537 |
| Participants with account balances | 757 |
| Auto-enrollment (feature code 2S) | Yes |
| Auditor | Kreischer Miller |
Largest service providers (Schedule C)
| Fidelity Investments Institutional | $78,002 reported compensation |
| Kreischer Miller | $20,196 reported compensation |
| Strategic Advisors, Inc. | $12,240 reported compensation |
Source: DOL EFAST2 Form 5500 filing, acknowledgment ID 20251013161433NAL0002409440001, received 2025-10-13, EIN 80-0512509, plan #001, plan year 2024-01-01 to 2024-12-31. Verify at efast.dol.gov.