Mersen USA Holding 401(k) match, vesting and fees
What Mersen USA Holding's 401(k) plan says about matching contributions
Plan features
Match, vesting and enrollment details have not been published from this plan's audit report yet. The figures below come from the structured filing.
| Recordkeeper | John Hancock | Schedule C ↗ |
| Independent auditor | Cliftonlarsonallen LLP (unmodified opinion, limited scope) | Schedule H ↗ |
| Plan type and status | 401(k) · Active | Form 5500 ↗ |
| Late participant contributions | Reported on the filing | Schedule H ↗ |
How the plan compares
Plan year 2025 medians for 434 defined-contribution plans in manufacturing with 1,000 to 4,999 participants.
| Mersen USA Holding: employer contribution per participant | $3,864 | |
| Peer median | $2,591 |
| Mersen USA Holding: average balance | $114,272 | |
| Peer median | $102,504 |
| Mersen USA Holding: admin expenses ÷ assets | 0.27% | |
| Peer median | 0.11% |
Admin expenses are the plan's reported administrative expenses divided by its assets; they do not include fund expense ratios.
Plan history
Plan assets went from $133M at the end of plan year 2021 to $184M at the end of plan year 2025.
| Plan year | Participants | Assets | Employer contributions | Per participant | Admin expense ratio | Match formula | Filing |
|---|---|---|---|---|---|---|---|
| 2025 | 1,622 | $184M | $6.2M | $3,864 | 0.27% | Not published | Form 5500 ↗ |
| 2024 | 1,576 | $160M | $5.5M | $3,497 | 0.27% | Not published | Form 5500 ↗ |
| 2023 | 1,553 | $140M | $4.9M | $3,188 | 0.28% | Not published | Form 5500 ↗ |
| 2022 | 1,426 | $118M | $4.5M | $3,190 | 0.34% | Not published | Form 5500 ↗ |
| 2021 | 1,310 | $133M | $3.8M | $2,893 | 0.34% | Not published | Form 5500 ↗ |
Other Mersen USA Holding plans (2)
Each plan files its own Form 5500. Figures are from each plan's latest filing.
Retirement Plan for Hourly Employees of Mersen USA
Plan features
Match, vesting and enrollment details have not been published from this plan's audit report yet. The figures below come from the structured filing.
| Recordkeeper | John Hancock | Schedule C ↗ |
| Independent auditor | Cliftonlarsonallen LLP (unmodified opinion, limited scope) | Schedule H ↗ |
| Plan type and status | Pension (defined benefit) · Active | Form 5500 ↗ |
Retirement Plan for Salaried Employees of Mersen USA
Plan features
Match, vesting and enrollment details have not been published from this plan's audit report yet. The figures below come from the structured filing.
| Recordkeeper | John Hancock | Schedule C ↗ |
| Independent auditor | Cliftonlarsonallen LLP (unmodified opinion, limited scope) | Schedule H ↗ |
| Plan type and status | Pension (defined benefit) · Frozen | Form 5500 ↗ |
Common questions
Does Mersen USA Holding match 401(k) contributions?
The match terms for the Retirement Savings Plan for the Employees of Mersen USA have not been published from its filing yet. The plan year 2025 filing reports $6.2M in employer contributions, about $3,864 per participant. That total includes any match and profit-sharing; it is not a match formula.
When is the Mersen USA Holding 401(k) match vested?
The vesting schedule for the Retirement Savings Plan for the Employees of Mersen USA is not in the data published so far. Your Summary Plan Description states it.
Who manages the Mersen USA Holding 401(k)?
The recordkeeper listed on Schedule C of the plan year 2025 filing is John Hancock. The plan administrator is Mersen USA Holding Corp..
I left Mersen USA Holding. How do I find my old 401(k)?
Your account stays in the plan until you move it. Contact the plan administrator (Mersen USA Holding Corp., (973) 334-0700) or the recordkeeper, John Hancock. The Mersen USA Holding old 401(k) page lists the contacts from every plan filing. Find an old Mersen USA Holding 401(k)
Data from the public Form 5500 annual reports Mersen USA Holding filed with the U.S. Department of Labor (plan years 2021 and 2022 and 2023 and 2024 and 2025) and, where noted, the attached independent auditor's report. Plan terms may have changed since the filing; check your current Summary Plan Description. PlanFacts is not affiliated with Mersen USA Holding. Not financial advice. Report a correction · Methodology