Stillwater Mining Company

Columbus, MT Mining & energyNAICS 212200

Self-funded health planPlan year 2025Renews JanuaryCollectively bargained
731Participants-47% vs. prior year
$1.7MEst. pharmacy spend / yrParticipants × national avg.
Jan 2027Next renewalPlan year begins January 1
#1 of 1Mining & energy in MTBy participants

Overview

Stillwater Mining Company sponsors a self-funded health plan that covered 731 participants in plan year 2025, down 47% from the prior year. The plan year starts in January. Alongside medical, its benefits filing reports life insurance, dental, vision, long-term disability.

Plan type
ERISA welfare benefit plan, self-funded (benefits paid from employer assets or a trust)
Participants
731 · prior year 1,368
Plan year
Begins January 1 · next renewal January 2027
Health plans filed
Stillwater Mining Company Bargaining Unit Health Plan, plan 501 (731 participants); Stillwater Mining Company Employee Health Benefit Plan, plan 507 (332 participants)
Broker compensation
$301K across insured contracts
MedicalLife insuranceDentalVisionLong-term disabilityOther welfare benefits

Insurance carriers

Insured coverage reported on Schedule A. Self-funded medical claims aren't reported there.

CarrierCoverageCoveredPremiumBroker comp
Principal Life Insurance CompanyLife, Long-term disability1,289$1.8M$282K
Life Insurance Company of North AmericaAccidental Death & Dismemberment726$127K$19K

Pharmacy benefit estimate

StreamRX estimate for a plan this size. Not based on this plan's claims.

$1.7M/ year

Estimated prescription spend: 731 participants × $2,371 national average per member. Usually higher once dependents are counted.

$45K–$111K/ year

Typical savings opportunity found in independent reviews of plans this size.

Brands with a generic available$13K–$33K
Lower-cost therapeutic alternatives$19K–$40K
Generic pricing vs. actual cost$8K–$25K
PBM contract terms$4K–$13K
The DOL's PBM fee disclosure rule first applies to this plan for the plan year beginning January 2028: semiannual PBM compensation reports and an annual audit right.

Form 5500 filing details

Filing
Form 5500 with Schedule A, plan year 2025
Plan sponsor
Stillwater Mining Company
Sponsor EIN
81-0480654
Plan numbers
501, 507
Filed with
U.S. Department of Labor (EBSA) via EFAST2

Verify this filing: search EIN 81-0480654 in the Department of Labor's EFAST2 Form 5500 search.

Retirement plan

Plan
Stillwater Mining Company Bargaining Unit 401(k) Plan
Type
401(k) plan
Participants
1,343

About this data

Source: Stillwater Mining Company's Form 5500 filing for plan year 2025 and its Schedule A insurance reports, published by the U.S. Department of Labor. "Self-funded" means the filing reports benefits paid from employer assets or a trust, with no medical insurance contract or with a stop-loss contract. Pharmacy figures are StreamRX estimates based on national averages. StreamRX is not affiliated with Stillwater Mining Company.

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