Commonwealth Fusion Systems LLC 401(k) Review & Grade
CFS 401(k) Plan
Devens, MAProfessional, Scientific & Technical Services828 active participantsPlan year 2024
Estimate from the plan's Form 5500 filing · How we grade
$4,392Employer $ per active participant
$10,587Employee $ saved per active participant
0.26%Direct admin cost, % of plan assets
$40.4MNet plan assets, end of year
$45,411Average balance per account
Score breakdown
- Employer generosity34.3 / 5069th percentile for employer $ per participant
- Low cost11.6 / 2546th percentile for low admin cost vs. same-size plans
- Employee saving9.6 / 1564th percentile for employee $ per participant
- Plan features3 / 10Default investment
- Red-flag deductions-13 pts2 issues reported on the filing
Total score46 / 100 · Grade C
This plan vs. peers
Peers: Professional, Scientific & Technical Services plans with 500–2,499 active participants (1,469 plans).
| Measure | Percentile |
|---|---|
| Employer $ per participant | 69th |
| Lower admin cost | 46th |
| Employee saving | 64th |
| Peers that auto-enroll | 48% |
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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 ($1,125,551 reported). That's money taken from paychecks that sat with the employer longer than the law allows.
Corrective distributions: the plan refunded $3,016 in contributions, which usually means it failed annual nondiscrimination testing.
What to do if you're in this plan
- Commonwealth Fusion Systems put in about $4,392 per active participant, more than the typical peer ($3,082). 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 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 | $3,636,833 |
| Participant (employee) contributions | $8,766,107 |
| Other contributions (incl. rollovers in) | $5,008,953 |
| Administrative expenses paid from the plan | $78,758 |
| Investment advisory & management fees | $74,520 |
| Benefits paid out | $1,628,778 |
| Net assets, start / end of year | $20.8M / $40.4M |
| Active participants, start / end of year | 589 / 1,067 |
| Participants with account balances | 890 |
| Auto-enrollment (feature code 2S) | Not reported |
| Auditor | Tawney PLLC |
Largest service providers (Schedule C)
| Osaic Wealth Inc | $61,768 reported compensation |
| Strategic Advisors, Inc. | $12,753 reported compensation |
| Fidelity Workplace Services LLC | $4,238 reported compensation |
Source: DOL EFAST2 Form 5500 filing, acknowledgment ID 20251013072114NAL0000776481001, received 2025-10-13, EIN 82-3262257, plan #001, plan year 2024-01-01 to 2024-12-31. Verify at efast.dol.gov.