Martin Marietta Materials, Inc. 401(k) Review & Grade
Martin Marietta Savings and Investment Plan
Raleigh, NCMining, Oil & Gas8,846 active participantsPlan year 2024✓ Auto-enroll
Estimate from the plan's Form 5500 filing · How we grade
$2,515Employer $ per active participant
$6,182Employee $ saved per active participant
0.08%Direct admin cost, % of plan assets
$903.5MNet plan assets, end of year
$85,281Average balance per account
Score breakdown
- Employer generosity28.2 / 5056th percentile for employer $ per participant
- Low cost16.1 / 2564th percentile for low admin cost vs. same-size plans
- Employee saving9.3 / 1562th percentile for employee $ per participant
- Plan features10 / 10Auto-enrollment, Default investment
- Red-flag deductions-3 pts1 issue reported on the filing
Total score61 / 100 · Grade B
This plan vs. peers
Peers: all industries, plans with 2,500–9,999 active participants (fewer than 30 industry peers) (2,386 plans).
| Measure | Percentile |
|---|---|
| Employer $ per participant | 56th |
| Lower admin cost | 64th |
| Employee saving | 62th |
| Peers that auto-enroll | 52% |
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Red flags from the filing
Corrective distributions: the plan refunded $3,400 in contributions, which usually means it failed annual nondiscrimination testing.
What to do if you're in this plan
- Martin Marietta Materials put in about $2,515 per active participant, more than the typical peer ($2,062). 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.
- 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 | $22,251,861 |
| Participant (employee) contributions | $54,684,732 |
| Other contributions (incl. rollovers in) | $9,352,987 |
| Administrative expenses paid from the plan | $698,472 |
| Benefits paid out | $128,330,274 |
| Net assets, start / end of year | $838.2M / $903.5M |
| Active participants, start / end of year | 8,807 / 8,886 |
| Participants with account balances | 10,594 |
| Auto-enrollment (feature code 2S) | Yes |
| Auditor | Forvis Mazars, LLP |
| Employer stock held by plan | $56,372,552 |
Largest service providers (Schedule C)
| Fidelity Investments Institutional | $664,242 reported compensation |
| Forvis Mazars, LLP | $34,230 reported compensation |
Source: DOL EFAST2 Form 5500 filing, acknowledgment ID 20250731101444NAL0002497651001, received 2025-07-31, EIN 56-1848578, plan #006, plan year 2024-01-01 to 2024-12-31. Verify at efast.dol.gov.