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Employer with a benefit plan

WISCONSIN POWER & LIGHT COMPANY

WISCONSIN POWER & LIGHT COMPANY's Employer Identification Number (EIN) is 39-0714890.

At a glance

EIN
39-0714890 · 390714890
Legal name
WISCONSIN POWER & LIGHT COMPANY
Address on file
4902 N. BILTMORE LANE, MADISON, WI 537182148
Records show
SEC filer; employer with a benefit plan
Latest record
2026-07-31

SEC records

SEC EDGAR company filings · records as of 2026-07-31

SEC CIK
0000107832
Source: SEC · as of 2026-07-31
Industry (SIC)
Electric & Other Services Combined (4931)
Source: SEC · as of 2026-07-31
State of incorporation
WI
Source: SEC · as of 2026-07-31
Latest SEC filing
10-Q 2026-07-31
Source: SEC · as of 2026-07-31

Benefit plans

DOL Form 5500 filings (EFAST2) · records as of 2025-10-14

Benefit plan 2, 2024 filing
WISCONSIN POWER & LIGHT CO. RETIREMENT PLAN B
Source: DOL 5500 · as of 2025-10-14
Participants (start of year)
1,561
Source: DOL 5500 · as of 2025-10-14
Plan features
Defined benefit (cash balance)
Source: DOL 5500 · as of 2025-10-14
Plan type
Single-employer plan
Source: DOL 5500 · as of 2025-10-14
Business code (NAICS)
221100
Source: DOL 5500 · as of 2025-10-14
Benefit plan 2, 2023 filing
WISCONSIN POWER & LIGHT CO. RETIREMENT PLAN B
Source: DOL 5500 · as of 2024-10-11
Participants (start of year)
1,612
Source: DOL 5500 · as of 2024-10-11
Plan features
Defined benefit (cash balance)
Source: DOL 5500 · as of 2024-10-11
Plan type
Single-employer plan
Source: DOL 5500 · as of 2024-10-11
Business code (NAICS)
221100
Source: DOL 5500 · as of 2024-10-11

What this record is

Public filings that carry this EIN (DOL Form 5500 filings (EFAST2) and SEC EDGAR company filings), shown as filed. Nothing is scraped from the IRS, and a public-record match is not IRS TIN validation.

What it is not

Registry status, formation date, and registered agent come from the Wisconsin Department of Financial Institutions, Division of Corporate and Consumer Services (Corporation Bureau); see the Wisconsin business entity search.

If something is wrong

A name, address, or classification here is what the source published. To correct the source, file with it; to have this page removed, see corrections and removal.

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