Castle Biosciences, Inc. 401(k) Review & Grade
Castle Biosciences, Inc. 401(k) Profit Sharing Plan
Friendswood, TXProfessional, Scientific & Technical Services686 active participantsPlan year 2024✓ Auto-enroll
Estimate from the plan's Form 5500 filing · How we grade
$7,315Employer $ per active participant
$10,234Employee $ saved per active participant
0.25%Direct admin cost, % of plan assets
$52.9MNet plan assets, end of year
$67,449Average balance per account
Score breakdown
- Employer generosity42.5 / 5085th percentile for employer $ per participant
- Low cost11.7 / 2547th percentile for low admin cost vs. same-size plans
- Employee saving9.1 / 1561th percentile for employee $ per participant
- Plan features10 / 10Auto-enrollment, Default investment
- Red-flag deductions-10 pts1 issue reported on the filing
Total score63 / 100 · Grade B
This plan vs. peers
Peers: Professional, Scientific & Technical Services plans with 500–2,499 active participants (1,469 plans).
| Measure | Percentile |
|---|---|
| Employer $ per participant | 85th |
| Lower admin cost | 47th |
| Employee saving | 61th |
| 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 ($244,437 reported). That's money taken from paychecks that sat with the employer longer than the law allows.
What to do if you're in this plan
- Castle Biosciences put in about $7,315 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 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 | $5,018,030 |
| Participant (employee) contributions | $7,020,761 |
| Other contributions (incl. rollovers in) | $609,123 |
| Administrative expenses paid from the plan | $113,213 |
| Benefits paid out | $3,149,305 |
| Net assets, start / end of year | $36.7M / $52.9M |
| Active participants, start / end of year | 615 / 757 |
| Participants with account balances | 785 |
| Auto-enrollment (feature code 2S) | Yes |
| Auditor | Ham Langston, Brezina, LLP |
Largest service providers (Schedule C)
| North American Ktrade Alliance, LLC | $69,860 reported compensation |
| Adp, Inc. | $24,640 reported compensation |
| Charles Schwab Trust Bank | $10,103 reported compensation |
Source: DOL EFAST2 Form 5500 filing, acknowledgment ID 20251007053144NAL0002449379001, received 2025-10-07, EIN 77-0701774, plan #001, plan year 2024-01-01 to 2024-12-31. Verify at efast.dol.gov.