# Filing Detail

Form 10-Q - Quarterly report [Sections 13 or 15(d)]:
SEC Accession No. 0000352541-25-000081
Filing Date
2025-11-07
Accepted
2025-11-07 12:02:34
Documents
99
Period of Report
2025-09-30

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-Q | lnt-20250930.htm iXBRL | 10-Q | 2723857
2 | CERTIFICATION OF THE CEO FOR ALLIANT ENERGY | lnt930202510-qex311.htm | EX-31.1 | 9359
3 | CERTIFICATION OF THE CFO FOR ALLIANT ENERGY | lnt930202510-qex312.htm | EX-31.2 | 9405
4 | CERTIFICATION OF THE CEO FOR IPL | lnt930202510-qex313.htm | EX-31.3 | 9350
5 | CERTIFICATION OF THE CFO FOR IPL | lnt930202510-qex314.htm | EX-31.4 | 9385
6 | CERTIFICATION OF THE CEO FOR WPL | lnt930202510-qex315.htm | EX-31.5 | 9401
7 | CERTIFICATION OF THE CFO FOR WPL | lnt930202510-qex316.htm | EX-31.6 | 9646
8 | WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR ALLIANT ENERGY | lnt930202510-qex321.htm | EX-32.1 | 4359
9 | WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR IPL | lnt930202510-qex322.htm | EX-32.2 | 4315
10 | WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR WPL | lnt930202510-qex323.htm | EX-32.3 | 4443
16 | GRAPHIC | lnt-20250930_g1.jpg | GRAPHIC | 319349
17 | GRAPHIC | lnt-20250930_g2.jpg | GRAPHIC | 15280
18 | GRAPHIC | lnt-20250930_g3.jpg | GRAPHIC | 11227
19 | GRAPHIC | lnt-20250930_g4.jpg | GRAPHIC | 12721
| Complete submission text file | 0000352541-25-000081.txt |  | 21688543

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
11 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | lnt-20250930.xsd | EX-101.SCH | 61868
12 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | lnt-20250930_cal.xml | EX-101.CAL | 62170
13 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | lnt-20250930_def.xml | EX-101.DEF | 655753
14 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | lnt-20250930_lab.xml | EX-101.LAB | 738751
15 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | lnt-20250930_pre.xml | EX-101.PRE | 733264
101 | EXTRACTED XBRL INSTANCE DOCUMENT | lnt-20250930_htm.xml | XML | 6775105

Mailing Address 200 FIRST ST SE ALLIANT ENERGY TOWER CEDAR RAPIDS IA 52401
Business Address 200 FIRST ST SE ALLIANT ENERGY TOWER CEDAR RAPIDS IA 52401 3193984411
INTERSTATE POWER & LIGHT CO (Filer) CIK: 0000052485 (see all company filings)

EIN.: 420331370 | State of Incorp.: IA | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-04117 | Film No.: 251461400
SIC: 4931 Electric & Other Services Combined
(CF Office: 01 Energy & Transportation)

Mailing Address 4902 N BILTMORE LANE SUITE 1000 MADISON WI 53718-2148
Business Address 4902 NORTH BILTMORE LANE SUITE 1000 MADISON WI 53718-2148 608-458-3311
WISCONSIN POWER & LIGHT CO (Filer) CIK: 0000107832 (see all company filings)

EIN.: 390714890 | State of Incorp.: WI | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 000-00337 | Film No.: 251461401
SIC: 4931 Electric & Other Services Combined
(CF Office: 01 Energy & Transportation)

Mailing Address 4902 NORTH BILTMORE LANE SUITE 1000 MADISON WI 53718-2148
Business Address 4902 NORTH BILTMORE LANE SUITE 1000 MADISON WI 53718-2148 608-458-3311
ALLIANT ENERGY CORP (Filer) CIK: 0000352541 (see all company filings)

EIN.: 391380265 | State of Incorp.: WI | Fiscal Year End: 1231
Type: 10-Q | Act: 34 | File No.: 001-09894 | Film No.: 251461399
SIC: 4931 Electric & Other Services Combined
(CF Office: 01 Energy & Transportation)