401(k) · DOL Form 5500 · 2023

Mainspring Energy, Inc. 401(k) Plan

Data updated 2026-08-25

$15M
Total assets Small plan by assets
334
Participants Below avg headcount
68th
Percentile by assets National rank
$46,130
Avg per participant Low balance/head
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Official DOL plan name: Mainspring Energy, Inc. 401(k) Plan · Sponsored by Mainspring Energy, Inc. · California · Manufacturing

$15M in assets, 334 participants

Mainspring Energy, Inc.'s Mainspring Energy, Inc. 401(k) Plan reported $15M in total assets and 334 participants in its 2023 DOL Form 5500 filing, ranking in the 68th 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.

  • #10,539 in Manufacturing (18,722 peers)

Mainspring Energy, Inc. multi-year trail

Mainspring Energy, Inc.'s plans moved +145.8% in assets from 2022 to 2024; this filing shows Mainspring Energy, Inc. 401(k) Plan at $15M / 334 participants.

#10,539
in Manufacturing (18,722 peers)
+64.4%
assets growth YoY

Mainspring Energy, Inc. 401(k) Plan's outsized position by total assets

Mainspring Energy, Inc. 401(k) Plan vs every filed plan by assets

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

$15,407,555 Top 32% higher than 68% 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

Mainspring Energy, Inc. 401(k) Plan among mid-size filed plans by headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Mainspring Energy, Inc. 401(k) Plan sits mid-pack in the medium band (334 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Mainspring Energy, Inc. 401(k) Plan reported net income rose from $645K in the plan year 2022 filing to $6M in the plan year 2023 filing.
  • Mainspring Energy, Inc. 401(k) Plan end-of-year assets rose from $9M in the plan year 2022 filing to $15M in the plan year 2023 filing.
  • Mainspring Energy, Inc. 401(k) Plan reported participants rose from 254 in the plan year 2022 filing to 334 in the plan year 2023 filing.

See the national 2022→2023 release diff →

DOL schedule card

Filing strip 272430529 · Mainspring Energy, Inc. PY 2023 · 401(k)

Mainspring Energy, Inc. 401(k) Plan · $15M · 334 · 68th

  • PART $15M
  • TYPE 334
  • NET 68th
  • BOOK 401(k)
  • VS-ST near Panum Telecom, LLC 401(k) Plan
  • BOY ind #10539

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 Manufacturing retirement plans → · Plans in California →

Mainspring Energy, Inc. 401(k) Plan in the asset neighbourhood

Mainspring Energy, Inc. 401(k) PlanMainspring Energy, Inc. 401(…$15MPanum Telecom, LLC 401(k) PlanPanum Telecom, LLC 401(k) Pl…$15MRadiant Credit Union 401(k) Retirement PlanRadiant Credit Union 401(k) …$15MSunrise Community Health 401(k) Safe Harbor PlanSunrise Community Health 401…$15MGeiger Pump and Equipment Company Profit Sharing PlanGeiger Pump and Equipment Co…$15M
End-of-year total assets ($M) among Mainspring Energy, Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Mainspring Energy, Inc. multi-year asset trail

Sponsor-wide plan assets over time

All Mainspring Energy, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$23M 145.81412882280577% vs 2022
2024 filing year
$5M$10M$15M$20M$25M 202220232024 $9.37M $23M ▲ +145.9%
Year Plans Participants Total Assets
2022 1 254 $9M
2023 1 334 $15M
2024 1 397 $23M

Mainspring Energy, Inc. filing trail (2023)

Total Assets (Beginning of Year)$9M
Net Assets (End of Year)$15M
Net Income$6M
Employer EIN272430529
Plan Effective Date2011-01-01
Filing StatusFILING RECEIVED

Nearby 401(k) Plans in California

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

Mainspring Energy, Inc. 401(k) Plan vs. nearby 401(k) plans in California, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000200000250000 -200204060 Total assets ($B) Participants Mainspring Energy, Inc. 401(k) Plan, Total assets ($B): 0.015407555 · Participants: 334Mainspring Energy, Inc. 401(k) PlanWells Fargo & Company 401(k) Plan, Total assets ($B): 51.831350351 · Participants: 193919Wells Fargo & Company 401(k) PlanGoogle LLC 401(k) Savings Plan, Total assets ($B): 39.047152408 · Participants: 122867Google LLC 401(k) Savings PlanOracle Corporation 401(k) Savings and Investment Plan, Total assets ($B): 26.320437734 · Participants: 63105Oracle Corporation 401(k) Savings and Investment PlanIntel 401(k) Savings Plan, Total assets ($B): 22.17918189 · Participants: 59863Intel 401(k) Savings PlanApple 401(k) Plan, Total assets ($B): 19.779511539 · Participants: 106111Apple 401(k) Plan
Mainspring Energy, Inc. 401(k) Plan vs. nearby 401(k) plans in California, assets vs. participants
Compare Mainspring Energy, Inc. 401(k) Plan side-by-side with 3 peers →

Mainspring Energy, Inc. 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside California, the nearest 401(k) by assets is Panum Telecom, LLC 401(k) Plan in MD ($15M); by covered participants it is Investment Corporation of Palm Beach 401(k) Plan in FL (334 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (334 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 Mainspring Energy, Inc. 401(k) Plan assets move in 2023? ▼
Mainspring Energy, Inc. 401(k) Plan surged - up 64.4% during 2023, from $9M to $15M. Reported net income was $6M.
How have Mainspring Energy, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Mainspring Energy, Inc.'s sponsor-wide assets grew 145.8%, from $9M to $23M.
Which 401(k) plans are similar in size to Mainspring Energy, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Panum Telecom, LLC 401(k) Plan in MD ($15M, 281 participants).
Which 401(k) plans cover a similar participant headcount to Mainspring Energy, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Investment Corporation of Palm Beach 401(k) Plan in FL (334 participants, $12M 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 272430529.

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.