Employer with a benefit plan ยท SEC filer
NORTHWESTERN CORPORATION
Also filed as NORTHWESTERN PUBLIC SERVICE CO
11 EAST PARK STREET, BUTTE, MT 597011711
EIN
46-0172280
Benefit plan 504, 2024 filing
NORTHWESTERN CORPORATION FAMILY PROTECTOR BENEFIT PLAN
DOL · 2025-11-17
Participants (start of year)
5
DOL · 2025-11-17
Plan features
Death benefits (other than life insurance)
DOL · 2025-11-17
Plan type
Single-employer plan
DOL · 2025-11-17
Business code (NAICS)
221100
DOL · 2025-11-17
Benefit plan 530, 2024 filing
NORTHWESTERN ENERGY EMPLOYEE BENEFIT PLAN
DOL · 2025-10-13
Participants (start of year)
2,202
DOL · 2025-10-13
Plan features
code 4A4B4D4Q4H4E
DOL · 2025-10-13
Plan type
Single-employer plan
DOL · 2025-10-13
Business code (NAICS)
221100
DOL · 2025-10-13
Benefit plan 101, 2024 filing
NORTHWESTERN ENERGY MT PENSION PLAN
DOL · 2025-09-30
Participants (start of year)
1,037
DOL · 2025-09-30
Plan features
code 1A1C1E3H
DOL · 2025-09-30
Plan type
Single-employer plan
DOL · 2025-09-30