Form 5500 · Employee benefit plan · MADISON, WI
ALLIANT ENERGY CORPORATE SERV.INC.
Public Form 5500 records show how ALLIANT ENERGY CORPORATE SERV.INC. (MADISON, WI) structures its employee benefits. Its broker of record is WILLIS TOWERS WATSON MIDWEST, INC. Coverage is written through MINNESOTA LIFE INSURANCE COMPANY and 6 other carriers. The plan's most recent policy period ended in December.
Sourced from U.S. DOL EFAST2 Form 5500 · EIN 39-1914946 · plan 501 · as of Jul 2026
Schedule A insurance contracts
| Carrier | Benefits | Covered | Renews | Commission |
|---|---|---|---|---|
| MINNESOTA LIFE INSURANCE COMPANY | Life | 4,018 | December | $53,055 |
| LINCOLN NATIONAL LIFE INSURANCE COMPANY | Disability | 930 | December | $34,022 |
| VISION SERVICE PLAN | Vision | 3,162 | December | $29,012 |
| MINNESOTA LIFE INSURANCE COMPANY | Life | 3,225 | December | $13,825 |
| MINNESOTA LIFE INSURANCE COMPANY | Life | 3,965 | December | $7,440 |
| BLUE CROSS BLUE SHIELD OF WISCONSIN | Stop-loss | 3,136 | December | $0 |
| NATIONAL UNION FIRE INS. | — | — | December | $0 |
Questions
Who is ALLIANT ENERGY CORPORATE SERV.INC.'s benefits broker?
Per its most recent Form 5500 Schedule A, ALLIANT ENERGY CORPORATE SERV.INC.'s broker of record is WILLIS TOWERS WATSON MIDWEST, INC.
What insurance carrier does ALLIANT ENERGY CORPORATE SERV.INC. use?
ALLIANT ENERGY CORPORATE SERV.INC.'s benefit plan is written through MINNESOTA LIFE INSURANCE COMPANY, among 7 disclosed carriers.
When does ALLIANT ENERGY CORPORATE SERV.INC.'s group plan renew?
The most recent Schedule A policy period for ALLIANT ENERGY CORPORATE SERV.INC. ended in December. Group plans typically renew on the same annual cycle.
Where does this data come from?
All figures are drawn from ALLIANT ENERGY CORPORATE SERV.INC.'s public Form 5500 filing with the U.S. Department of Labor (EFAST2). Form 5500 is a public record.