401(k) · DOL Form 5500 · 2024

Stillwater Mining Company 401(k) Plan

Data updated 2026-08-25

$154M
Total assets Near avg plan size
493
Participants Below avg headcount
93rd
Percentile by assets National rank
$313,320
Avg per participant High balance/head
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Official DOL plan name: Stillwater Mining Company 401(k) Plan · Sponsored by Stillwater Mining Company · Montana · Mining & Oil Extraction

$154M in assets, 493 participants

Stillwater Mining Company's Stillwater Mining Company 401(k) Plan reported $154M in total assets and 493 participants in its 2024 DOL Form 5500 filing, ranking in the 93rd 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.

  • #682 in Mining & Oil Extraction (785 peers)

Where Stillwater Mining Company 401(k) Plan sits by assets

Stillwater Mining Company 401(k) Plan sits in the top 10% of all filed plans by assets, $154M for 493 participants (~$313,320/participant), down 1.0% in 2024.

#682
in Mining & Oil Extraction (785 peers)
-1.0%
assets change YoY
1.5×
vs typical plan assets (national mean)

The plan reported a net loss of $4M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

Stillwater Mining Company 401(k) Plan's outsized position by total assets

Stillwater Mining Company 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$154,467,003 Top 7% higher than 93% of 123,620 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 2024

Stillwater Mining Company 401(k) Plan among mid-size filed plans by headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Stillwater Mining Company 401(k) Plan sits mid-pack in the medium band (493 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Stillwater Mining Company 401(k) Plan reported net income fell from $16M in the plan year 2023 filing to -$4M in the plan year 2024 filing.
  • Stillwater Mining Company 401(k) Plan reported participants fell from 502 in the plan year 2023 filing to 493 in the plan year 2024 filing.
  • Stillwater Mining Company 401(k) Plan end-of-year assets fell from $156M in the plan year 2023 filing to $154M in the plan year 2024 filing.

See the national 2023→2024 release diff →

DOL schedule card

Filing strip 810480654 · Stillwater Mining Company PY 2024 · 401(k)

Stillwater Mining Company 401(k) Plan · $154M · 493 · 93rd

  • 5500 $154M
  • 5500 493
  • 5500 93rd
  • 5500 401(k)
  • 5500 near Plug Power Inc. Savings and Retirement Plan
  • 5500 ind #682

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 Mining & Oil Extraction retirement plans → · Plans in Montana →

Stillwater Mining Company 401(k) Plan in the asset neighbourhood

Republic Bancorp, Inc. 401(k) Retirement PlanRepublic Bancorp, Inc. 401(k…$154MMfa 401(k) Plan$154MStillwater Mining Company 401(k) PlanStillwater Mining Company 40…$154MPlug Power Inc. Savings and Retirement PlanPlug Power Inc. Savings and …$154MAsc Engineered Solutions, LLC Retirement Savings PlanAsc Engineered Solutions, LL…$154M
End-of-year total assets ($M) among Stillwater Mining Company 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)$156M
Net Assets (End of Year)$154M
Net Income-$4M
Employer EIN810480654
Plan Effective Date1993-06-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Stillwater Mining Company)

Sponsor-wide plan assets over time

All Stillwater Mining Company plans reported in each filing year

Latest sponsor-wide plan assets
$431M 9.989406155149915% vs 2022
2024 filing year
$380M$400M$420M$440M$460M 202220232024 $392M $431M ▲ +10.0%
Year Plans Participants Total Assets
2022 2 1,975 $392M
2023 2 1,826 $436M
2024 2 1,810 $431M

Nearby 401(k) Plans in Montana

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

Stillwater Mining Company 401(k) Plan vs. nearby 401(k) plans in Montana, assets vs. participants Scatter plot of 6 data points. 010002000300040005000 0200400600800 Total assets ($M) Participants Stillwater Mining Company 401(k) Plan, Total assets ($M): 154.467003 · Participants: 493Stillwater Mining Company 401(k) PlanD.a. Davidson Companies Retirement Savings and Profit Sharing Plan, Total assets ($M): 622.672637 · Participants: 1619D.a. Davidson Companies Retirement Savings and Profit Sharing PlanGlacier Bancorp, Inc. Profit Sharing and 401(k) Plan, Total assets ($M): 537.940129 · Participants: 3215Glacier Bancorp, Inc. Profit Sharing and 401(k) PlanNorthwestern Energy 401(k) Retirement Savings Plan, Total assets ($M): 512.769387 · Participants: 1571Northwestern Energy 401(k) Retirement Savings PlanLogan Health Retirement Savings Plan, Total assets ($M): 500.352847 · Participants: 4288Logan Health Retirement Savings PlanFirst Interstate Bancsystem, Inc. 401(k) Plan, Total assets ($M): 481.734557 · Participants: 3530First Interstate Bancsystem, Inc. 401(k) Plan
Stillwater Mining Company 401(k) Plan vs. nearby 401(k) plans in Montana, assets vs. participants
Compare Stillwater Mining Company 401(k) Plan side-by-side with 3 peers →

Stillwater Mining Company 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Montana, the nearest 401(k) by assets is Plug Power Inc. Savings and Retirement Plan in NY ($154M); by covered participants it is Well Care Home Health Care Retirement Savings Plan in NC (493 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($154M here).

Similar participant headcount

Nearest other-state filings by covered participants (493 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Stillwater Mining Company 401(k) Plan assets move in 2024? ▼
Stillwater Mining Company 401(k) Plan held essentially flat - down 1.0% during 2024, from $156M to $154M. Reported net income was -$4M.
How have Stillwater Mining Company plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Stillwater Mining Company's sponsor-wide assets grew 10.0%, from $392M to $431M.
Where does Stillwater Mining Company 401(k) Plan rank by assets among Form 5500 filers? ▼
Stillwater Mining Company 401(k) Plan ranks in the 93rd percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top 10% of all filed plans by assets).
Which 401(k) plans are similar in size to Stillwater Mining Company 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Plug Power Inc. Savings and Retirement Plan in NY ($154M, 3,181 participants).
Which 401(k) plans cover a similar participant headcount to Stillwater Mining Company 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Well Care Home Health Care Retirement Savings Plan in NC (493 participants, $16M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 810480654.

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.