Rio Tinto America Inc. 401(k) Review & Grade
Rio Tinto America Inc. 401(k) Savings Plan and Investment Partnership Plan
South Jordan, UTMining, Oil & Gas2,037 active participantsPlan year 2024
Estimate from the plan's Form 5500 filing · How we grade
$13,826Employer $ per active participant
$9,546Employee $ saved per active participant
0.02%Direct admin cost, % of plan assets
$687.0MNet plan assets, end of year
$220,190Average balance per account
Score breakdown
- Employer generosity46.5 / 5093th percentile for employer $ per participant
- Low cost23.6 / 2594th percentile for low admin cost vs. same-size plans
- Employee saving11.3 / 1575th percentile for employee $ per participant
- Plan features3 / 10Default investment
- Red-flag deductions-10 pts1 issue reported on the filing
Total score74 / 100 · Grade B
This plan vs. peers
Peers: Mining, Oil & Gas plans with 500–2,499 active participants (129 plans).
| Measure | Percentile |
|---|---|
| Employer $ per participant | 93th |
| Lower admin cost | 94th |
| Employee saving | 75th |
| Peers that auto-enroll | 60% |
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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 ($51,935 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
- Rio Tinto America put in about $13,826 per active participant, more than the typical peer ($4,357). 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 | $28,163,531 |
| Participant (employee) contributions | $19,445,809 |
| Other contributions (incl. rollovers in) | $3,021,396 |
| Administrative expenses paid from the plan | $157,135 |
| Benefits paid out | $64,076,909 |
| Net assets, start / end of year | $614.8M / $687.0M |
| Active participants, start / end of year | 1,926 / 2,148 |
| Participants with account balances | 3,120 |
| Auto-enrollment (feature code 2S) | Not reported |
| Auditor | Bdo USA, P.C. |
Largest service providers (Schedule C)
| Morgan, Lewis & Bockius LLP | $63,675 reported compensation |
| Empower Annuity Insurance Company | $62,112 reported compensation |
| Bdo USA, P.C. | $31,348 reported compensation |
Source: DOL EFAST2 Form 5500 filing, acknowledgment ID 20250905112250NAL0035843778001, received 2025-09-05, EIN 11-3359689, plan #002, plan year 2024-01-01 to 2024-12-31. Verify at efast.dol.gov.