Employer with a benefit plan ยท SEC filer
INTERSTATE POWER AND LIGHT COMPANY
Also filed as IES UTILITIES INC
4902 N BILTMORE LANE, MADISON, WI 537182148
EIN
42-0331370
SEC CIK
0000052485
SEC · 2026-08-21
Industry (SIC)
Electric & Other Services Combined (4931)
SEC · 2026-08-21
State of incorporation
IA
SEC · 2026-08-21
Latest SEC filing
8-K 2026-08-21
SEC · 2026-08-21
Benefit plan 1, 2024 filing
IPL RETIREMENT PLAN FOR BARGAINING UNIT EES
DOL · 2025-10-14
Participants (start of year)
1,501
DOL · 2025-10-14
Plan features
code 1A3H
DOL · 2025-10-14
Plan type
Single-employer plan
DOL · 2025-10-14
Business code (NAICS)
221100
DOL · 2025-10-14
Benefit plan 1, 2023 filing
IPL RETIREMENT PLAN FOR BARGAINING UNIT EES
DOL · 2024-10-15
Participants (start of year)
1,656
DOL · 2024-10-15
Plan features
code 1A3H
DOL · 2024-10-15
Plan type
Single-employer plan
DOL · 2024-10-15
Business code (NAICS)
221100
DOL · 2024-10-15