Mammoth Energy Partners 401(k) match, vesting and fees

Plan year 2024 filingMammoth Energy Partners 401(k) Profit Sharing Plan and Trust · Plan 001 · EIN 47-1902732Updated Oct 2026

What Mammoth Energy Partners' 401(k) plan says about matching contributions

The match terms have not been published from this plan's filing yet.
The plan year 2024 filing reports $2M in employer contributions, about $1,398 per participant. That total includes any match and profit-sharing; it is not a match formula. Plan year 2024 Form 5500 ↗
$28,132
Average account balance
1,744
Participants (end of year)
$40.6M
Plan assets (end of year)
0.14%
Admin expenses ÷ assets

Plan features

Match, vesting and enrollment details have not been published from this plan's audit report yet. The figures below come from the structured filing.

RecordkeeperBok Financial Asset Management, IncSchedule C ↗
Independent auditorRose Rock Cpas, PLLC (unmodified opinion, limited scope)Schedule H ↗
Plan type and status401(k) · ActiveForm 5500 ↗

How the plan compares

Plan year 2024 medians for 88 defined-contribution plans in utilities with 1,000 to 4,999 participants.

Mammoth Energy Partners: employer contribution per participant$1,398
Peer median$5,211
Mammoth Energy Partners: average balance$28,132
Peer median$181,622
Mammoth Energy Partners: admin expenses ÷ assets0.14%
Peer median0.08%

Admin expenses are the plan's reported administrative expenses divided by its assets; they do not include fund expense ratios.

Plan history

Plan assets went from $34.2M at the end of plan year 2021 to $40.6M at the end of plan year 2024.

$34.2M2021$30M2022$35.8M2023$40.6M2024
End-of-year figures from each plan year's Form 5500 filing for the Mammoth Energy Partners plan.
Plan yearParticipantsAssetsEmployer contributionsPer participantAdmin expense ratioMatch formulaFiling
20241,744$40.6M$2M$1,3980.14%Not publishedForm 5500 ↗
20231,797$35.8M$2.4M$1,3790.22%Not publishedForm 5500 ↗
20221,860$30M$2.4M$13,4340.18%Not publishedForm 5500 ↗
20211,606$34.2M$2M$1,2590.28%Not publishedForm 5500 ↗

Common questions

Does Mammoth Energy Partners match 401(k) contributions?

The match terms for the Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust have not been published from its filing yet. The plan year 2024 filing reports $2M in employer contributions, about $1,398 per participant. That total includes any match and profit-sharing; it is not a match formula.

When is the Mammoth Energy Partners 401(k) match vested?

The vesting schedule for the Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust is not in the data published so far. Your Summary Plan Description states it.

Who manages the Mammoth Energy Partners 401(k)?

The recordkeeper listed on Schedule C of the plan year 2024 filing is Bok Financial Asset Management, Inc. The plan administrator is Mammoth Energy Partners LLC.

I left Mammoth Energy Partners. How do I find my old 401(k)?

Your account stays in the plan until you move it. Contact the plan administrator (Mammoth Energy Partners LLC, (405) 394-0146) or the recordkeeper, Bok Financial Asset Management, Inc. The Mammoth Energy Partners old 401(k) page lists the contacts from every plan filing. Find an old Mammoth Energy Partners 401(k)

Data from the public Form 5500 annual reports Mammoth Energy Partners filed with the U.S. Department of Labor (plan years 2021 and 2022 and 2023 and 2024) and, where noted, the attached independent auditor's report. Plan terms may have changed since the filing; check your current Summary Plan Description. PlanFacts is not affiliated with Mammoth Energy Partners. Not financial advice. Report a correction · Methodology