Century Aluminum Company
Chicago, IL, 60606
- Plans
- 5
- Total participants
- 16,967
- Filing years
- 2024, 2023, 2022, 2021, 2020
- NAICS
- 331310
Benefit plans on file
| Year | Form | Plan # | Plan name | Participants |
|---|---|---|---|---|
| 2024 | Form 5500 | 004 | Century Aluminum 401(K) Plan | 1,434 |
| 2024 | Form 5500 | 005 | Century Aluminum Consolidated Retirement Plan | 494 |
| 2024 | Form 5500 | 006 | Century Aluminum Company Db Master Trust | — |
| 2024 | Form 5500 | 501 | Century Aluminum Master Welfare Benefit Plan | 1,232 |
| 2024 | Form 5500 | 511 | Century Aluminum Company Retiree Welfare Benefit Plan | 0 |
| 2023 | Form 5500 | 004 | Century Aluminum 401(K) Plan | 1,425 |
| 2023 | Form 5500 | 005 | Century Aluminum Consolidated Retirement Plan | 464 |
| 2023 | Form 5500 | 006 | Century Aluminum Company Db Master Trust | — |
| 2023 | Form 5500 | 501 | Century Aluminum Master Welfare Benefit Plan | 1,197 |
| 2023 | Form 5500 | 511 | Century Aluminum Company Retiree Welfare Benefit Plan | 0 |
| 2022 | Form 5500 | 004 | Century Aluminum 401(K) Plan | 1,423 |
| 2022 | Form 5500 | 005 | Century Aluminum Consolidated Retirement Plan | 477 |
| 2022 | Form 5500 | 006 | Century Aluminum Company Db Master Trust | — |
| 2022 | Form 5500 | 501 | Century Aluminum Master Welfare Benefit Plan | 1,196 |
| 2022 | Form 5500 | 511 | Century Aluminum Company Retiree Welfare Benefit Plan | 0 |
| 2021 | Form 5500 | 004 | Century Aluminum 401(K) Plan | 1,979 |
| 2021 | Form 5500 | 005 | Century Aluminum Consolidated Retirement Plan | 516 |
| 2021 | Form 5500 | 006 | Century Aluminum Company Db Master Trust | — |
| 2021 | Form 5500 | 501 | Century Aluminum Master Welfare Benefit Plan | 1,790 |
| 2021 | Form 5500 | 511 | Century Aluminum Company Retiree Welfare Benefit Plan | 0 |
| 2020 | Form 5500 | 004 | Century Aluminum 401(K) Plan | 1,599 |
| 2020 | Form 5500 | 005 | Century Aluminum Consolidated Retirement Plan | 353 |
| 2020 | Form 5500 | 501 | Century Aluminum Master Welfare Benefit Plan | 1,388 |
| 2020 | Form 5500 | 511 | Century Aluminum Company Retiree Welfare Benefit Plan | 0 |
Data shown as filed with the U.S. Department of Labor (EBSA), filing years 2020–2025; not validated by OpenERISA. View official filings for this EIN on the DOL EFAST2 search.
Other plan sponsors in Illinois
01.Com, INC.
68-0666350Chicago, IL·1 plan·202010 West Real Estate Group LLC
85-2803847Westmont, IL·1 plan·2024, 2023, 2022, 202110/33 Ambulance Service Limited
36-2820932Spring Valley, IL·1 plan·20221000 South Pet Care
92-1670096Chicago, IL·1 plan·20241028 N Rush Street Corporation
36-2839183Chicago, IL·1 plan·2024, 2023, 2022, 2021, 2020103 Advisory Group, LLC
86-3174023Chicago, IL·1 plan·2024, 2025, 2023, 2022105 Management LLC
36-3675137Joliet, IL·1 plan·2024, 2023, 2022108, LLC
83-2465975Chicago, IL·1 plan·2024, 2023, 2022, 2021, 2020