Century Aluminum Company
Overview
Century Aluminum Company sponsors a self-funded health plan that covered 1,310 participants in plan year 2025, up 6% from the prior year. The plan year starts in January. Alongside medical, its benefits filing reports life insurance, dental, vision, short-term disability, and more.
- Plan type
- ERISA welfare benefit plan, self-funded (benefits paid from employer assets or a trust)
- Participants
- 1,310 · prior year 1,232
- Plan year
- Begins January 1 · next renewal January 2027
- Health plans filed
- Century Aluminum Master Welfare Benefit Plan, plan 501 (1,310 participants); Century Aluminum Company Retiree Welfare Benefit Plan, plan 511 (262 participants)
- Broker compensation
- $89K across insured contracts
Insurance carriers
Insured coverage reported on Schedule A. Self-funded medical claims aren't reported there.
| Carrier | Coverage | Covered | Premium | Broker comp |
|---|---|---|---|---|
| Prudential Insurance Company of America | Life, Long-term disability | 1,255 | $1.2M | $88K |
| Telus Health (US) Ltd | Employee Assistance Program | 1,253 | $19K | — |
| Zurich American Insurance Company | Business Travel Accident | 1,255 | $3K | $1K |
Pharmacy benefit estimate
StreamRX estimate for a plan this size. Not based on this plan's claims.
Estimated prescription spend: 1,310 participants × $2,371 national average per member. Usually higher once dependents are counted.
Typical savings opportunity found in independent reviews of plans this size.
Form 5500 filing details
- Filing
- Form 5500 with Schedule A, plan year 2025
- Plan sponsor
- Century Aluminum Company
- Sponsor EIN
- 13-3070826
- Plan numbers
- 501, 511
- Filed with
- U.S. Department of Labor (EBSA) via EFAST2
Verify this filing: search EIN 13-3070826 in the Department of Labor's EFAST2 Form 5500 search.
Retirement plan
- Plan
- Century Aluminum Consolidated Retirement Plan
- Type
- Pension plan
- Participants
- 1,873
About this data
Source: Century Aluminum 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 Century Aluminum Company.