# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000352541-25-000014
Filing Date
2025-02-21
Accepted
2025-02-21 16:46:26
Documents
167
Period of Report
2024-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-K | lnt-20241231.htm iXBRL | 10-K | 5663470
2 | FORM OF PERFORMANCE SHARE AGREEMENT | lnt1231202410-kex102f.htm | EX-10.2F | 82375
3 | FORM OF RESTRICTED STOCK UNIT AGREEMENT | lnt1231202410-kex102g.htm | EX-10.2G | 46895
4 | AMENDED AND RESTATED DEFERRED COMPENSATION PLAN | lnt1231202410-kex103.htm | EX-10.3 | 156141
5 | TERMS OF EXECUTIVE SHORT-TERM INCENTIVE PLAN | lnt1231202410-kex1011.htm | EX-10.11 | 25626
6 | SUMMARY OF COMPENSATION AND BENEFITS FOR NON-EMPLOYEE DIRECTORS | lnt1231202410-kex1014.htm | EX-10.14 | 6993
7 | INSIDER TRADING POLICIES AND PROCEDURES | lnt1231202410-kex19.htm | EX-19 | 50108
8 | SUBSIDIARIES OF ALLIANT ENERGY | lnt1231202410-kex211.htm | EX-21.1 | 3929
9 | CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR ALLIANT ENERGY | lnt1231202410-kex231.htm | EX-23.1 | 2292
10 | CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR IPL | lnt1231202410-kex232.htm | EX-23.2 | 2049
11 | CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR WPL | lnt1231202410-kex233.htm | EX-23.3 | 2047
12 | CERTIFICATION OF THE CEO FOR ALLIANT ENERGY | lnt1231202410-kex311.htm | EX-31.1 | 9386
13 | CERTIFICATION OF THE CFO FOR ALLIANT ENERGY | lnt1231202410-kex312.htm | EX-31.2 | 9407
14 | CERTIFICATION OF THE CEO FOR IPL | lnt1231202410-kex313.htm | EX-31.3 | 9379
15 | CERTIFICATION OF THE CFO FOR IPL | lnt1231202410-kex314.htm | EX-31.4 | 9412
16 | CERTIFICATION OF THE CEO FOR WPL | lnt1231202410-kex315.htm | EX-31.5 | 9364
17 | CERTIFICATION OF THE CFO FOR WPL | lnt1231202410-kex316.htm | EX-31.6 | 9410
18 | WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR ALLIANT ENERGY | lnt1231202410-kex321.htm | EX-32.1 | 4360
19 | WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR IPL | lnt1231202410-kex322.htm | EX-32.2 | 4343
20 | WRITTEN STATEMENT OF CEO AND CFO PURSUANT TO 18 U.S.C.1350 FOR WPL | lnt1231202410-kex323.htm | EX-32.3 | 4342
26 | GRAPHIC | lnt-20241231_g1.jpg | GRAPHIC | 334542
27 | GRAPHIC | lnt-20241231_g2.jpg | GRAPHIC | 14199
28 | GRAPHIC | lnt-20241231_g3.jpg | GRAPHIC | 14180
29 | GRAPHIC | lnt-20241231_g4.jpg | GRAPHIC | 12110
30 | GRAPHIC | lnt-20241231_g5.jpg | GRAPHIC | 12067
31 | GRAPHIC | lnt-20241231_g6.jpg | GRAPHIC | 15175
32 | GRAPHIC | lnt-20241231_g7.jpg | GRAPHIC | 12901
33 | GRAPHIC | lnt-20241231_g8.jpg | GRAPHIC | 12547
| Complete submission text file | 0000352541-25-000014.txt |  | 44963423

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
21 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | lnt-20241231.xsd | EX-101.SCH | 114535
22 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | lnt-20241231_cal.xml | EX-101.CAL | 100955
23 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | lnt-20241231_def.xml | EX-101.DEF | 1166223
24 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | lnt-20241231_lab.xml | EX-101.LAB | 1219381
25 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | lnt-20241231_pre.xml | EX-101.PRE | 1284066
169 | EXTRACTED XBRL INSTANCE DOCUMENT | lnt-20241231_htm.xml | XML | 15084623

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-K | Act: 34 | File No.: 001-04117 | Film No.: 25652694
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-K | Act: 34 | File No.: 000-00337 | Film No.: 25652695
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-K | Act: 34 | File No.: 001-09894 | Film No.: 25652693
SIC: 4931 Electric & Other Services Combined
(CF Office: 01 Energy & Transportation)