401(k) · DOL Form 5500 · 2023

Mammoth Energy Partners LLC 401(k) Plan

Data updated 2026-08-25

$36M
Total assets Below avg plan size
1,094
Participants Near avg headcount
82nd
Percentile by assets National rank
$32,838
Avg per participant Low balance/head
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Official DOL plan name: Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust · Sponsored by Mammoth Energy Partners LLC · Oklahoma · Utilities

$36M in assets, 1,094 participants

Mammoth Energy Partners LLC's Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust reported $36M in total assets and 1,094 participants in its 2023 DOL Form 5500 filing, ranking in the 82nd percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

  • #333 in Utilities (721 peers)

Utilities sector rank

Within Utilities, Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust ranks #333 of 721 2023 filers by assets (1495% of the sector average)-$36M for 1,094 participants.

#333
in Utilities (721 peers)
+18.7%
assets growth YoY
0.4×
vs typical plan assets (national mean)

Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust's outsized position by total assets

Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$35,925,270 Top 18% higher than 82% of 127,068 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust's large-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust lands in the large band (1,094 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust reported net income rose from -$4M in the plan year 2022 filing to $6M in the plan year 2023 filing.
  • Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust reported participants rose from 827 in the plan year 2022 filing to 1,094 in the plan year 2023 filing.
  • Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust end-of-year assets rose from $30M in the plan year 2022 filing to $36M in the plan year 2023 filing.

See the national 2022→2023 release diff →

EBSA filing schedule strip

Filing strip 471902732 · Mammoth Energy Partners LLC PY 2023 · 401(k)

Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust · $36M · 1,094 · 82nd

  • SCH $36M
  • EBSA 1,094
  • PART 82nd
  • TYPE 401(k)
  • NET near Bbr Partners, LLC Retirement Plan
  • BOOK ind #333

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Utilities retirement plans → · Plans in Oklahoma →

Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust in the asset neighbourhood

Mammoth Energy Partners 401(k) Profit Sharing Plan and TrustMammoth Energy Partners 401(…$36MStrand Physician Specialists, P.a. 401(k) PlanStrand Physician Specialists…$36MBbr Partners, LLC Retirement PlanBbr Partners, LLC Retirement…$36MIntricon 401(k) Employee Savings PlanIntricon 401(k) Employee Sav…$36MNextroll 401(k) Plan & Trust$36M
End-of-year total assets ($M) among Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Utilities filing particulars

Total Assets (Beginning of Year)$30M
Net Assets (End of Year)$36M
Net Income$6M
Employer EIN471902732
Plan Effective Date2013-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Mammoth Energy Partners LLC)

Sponsor-wide plan assets over time

All Mammoth Energy Partners LLC plans reported in each filing year

Latest sponsor-wide plan assets
$41M 34.5269421842422% vs 2022
2024 filing year
$25M$30M$35M$40M$45M 202220232024 $30.3M $40.7M ▲ +34.5%
Year Plans Participants Total Assets
2022 1 827 $30M
2023 1 1,094 $36M
2024 1 730 $41M

Nearby 401(k) Plans in Oklahoma

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust vs. nearby 401(k) plans in Oklahoma, assets vs. participants Scatter plot of 6 data points. 050001000015000 -1012345 Total assets ($B) Participants Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust, Total assets ($B): 0.03592527 · Participants: 1094Mammoth Energy Partners 401(k) Profit Sharing Plan and TrustQuiktrip Corporation Retirement Plan, Total assets ($B): 4.212452319 · Participants: 11746Quiktrip Corporation Retirement PlanThe Williams Investment Plus Plan, Total assets ($B): 1.681202476 · Participants: 5041The Williams Investment Plus PlanOneok, Inc. 401(k) Plan, Total assets ($B): 1.156591 · Participants: 2965Oneok, Inc. 401(k) PlanBok Financial 401(k) Plan, Total assets ($B): 1.048169756 · Participants: 4766Bok Financial 401(k) PlanDevon Energy Corporation Incentive Savings Plan, Total assets ($B): 0.932957189 · Participants: 1858Devon Energy Corporation Incentive Savings Plan
Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust vs. nearby 401(k) plans in Oklahoma, assets vs. participants
Compare Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust side-by-side with 3 peers →

Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust's out-of-state 401(k) peers by assets and headcount

Outside Oklahoma, the nearest 401(k) by assets is Bbr Partners, LLC Retirement Plan in NY ($36M); by covered participants it is Union Bank & Trust Company Profit Sharing Plan in NE (1,094 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($36M here).

Similar participant headcount

Nearest other-state filings by covered participants (1,094 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust assets move in 2023? ▼
Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust grew sharply - up 18.7% during 2023, from $30M to $36M. Reported net income was $6M.
How have Mammoth Energy Partners LLC plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Mammoth Energy Partners LLC's sponsor-wide assets grew 34.5%, from $30M to $41M.
Where does Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust rank by assets among Form 5500 filers? ▼
Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust ranks in the 82nd percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust? ▼
Among 401(k) plans in other states, the closest by assets is Bbr Partners, LLC Retirement Plan in NY ($36M, 160 participants).
Which 401(k) plans cover a similar participant headcount to Mammoth Energy Partners 401(k) Profit Sharing Plan and Trust? ▼
Among 401(k) plans in other states, the closest by covered participants is Union Bank & Trust Company Profit Sharing Plan in NE (1,094 participants, $234M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 471902732.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.