Aaon, Inc. 401(k) Review & Grade
Aaon, Inc. Savings and Investment Plan
Tulsa, OKManufacturing4,169 active participantsPlan year 2024✓ Auto-enroll
Estimate from the plan's Form 5500 filing · How we grade
$4,849Employer $ per active participant
$4,250Employee $ saved per active participant
0.11%Direct admin cost, % of plan assets
$448.8MNet plan assets, end of year
$87,794Average balance per account
Score breakdown
- Employer generosity34.2 / 5068th percentile for employer $ per participant
- Low cost13.7 / 2555th percentile for low admin cost vs. same-size plans
- Employee saving4.1 / 1527th percentile for employee $ per participant
- Plan features10 / 10Auto-enrollment, Default investment
- Red-flag deductions-10 pts1 issue reported on the filing
Total score52 / 100 · Grade C
This plan vs. peers
Peers: Manufacturing plans with 2,500–9,999 active participants (566 plans).
| Measure | Percentile |
|---|---|
| Employer $ per participant | 68th |
| Lower admin cost | 55th |
| Employee saving | 27th |
| Peers that auto-enroll | 70% |
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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 ($66,238 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
- Aaon put in about $4,849 per active participant, more than the typical peer ($3,452). 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 | $20,213,916 |
| Participant (employee) contributions | $17,717,419 |
| Other contributions (incl. rollovers in) | $552,017 |
| Administrative expenses paid from the plan | $410,540 |
| Investment advisory & management fees | $48,055 |
| Other admin expenses | $33,548 |
| Benefits paid out | $30,021,255 |
| Net assets, start / end of year | $311.5M / $448.8M |
| Active participants, start / end of year | 3,690 / 4,648 |
| Participants with account balances | 5,112 |
| Auto-enrollment (feature code 2S) | Yes |
| Auditor | Hogantaylor LLP |
| Employer stock held by plan | $301,617,021 |
Largest service providers (Schedule C)
| Bokf, NA | $410,540 reported compensation |
Source: DOL EFAST2 Form 5500 filing, acknowledgment ID 20251007141711NAL0011533730001, received 2025-10-07, EIN 73-1328149, plan #001, plan year 2024-01-01 to 2024-12-31. Verify at efast.dol.gov.