ALLIANT ENERGY CORP — All Filings
1,002 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
All
10-K
10-K/A
10-K405
10-K405/A
10-Q
10-Q/A
11-K
15-15D
25
3
3/A
35-CERT
35-CERT/A
4
4/A
424B2
424B3
424B5
5
5/A
8-A12B
8-A12B/A
8-K
8-K/A
ARS
CERT
CORRESP
CT ORDER
DEF 14A
DEFA14A
FWP
NO ACT
NT 10-K
NT 11-K
POS AMC
POSASR
PRE 14A
PX14A6G
RW
S-3
S-3/A
S-3ASR
S-3D
S-3MEF
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G/A
SE
U-1
U-1/A
U-12-IB
U-13-60
U-57
U-6B-2
U-6B-2/A
U-9C-3
U5A
U5B
U5B/A
U5S
U5S/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 8-K | 8-K | 0000352541-19-000059 | May 20, 2019 | May 16, 2019 |
| 4 | FORM 4 | 0000352541-19-000057 | May 6, 2019 | May 3, 2019 |
| 4 | FORM 4 | 0000352541-19-000055 | May 3, 2019 | May 1, 2019 |
| 10-Q | 10-Q | 0000352541-19-000053 | May 3, 2019 | Mar 31, 2019 |
| 8-K | 8-K | 0000352541-19-000050 | May 3, 2019 | May 2, 2019 |
| 4 | FORM 4 | 0000352541-19-000046 | Apr 15, 2019 | Apr 11, 2019 |
| 4 | FORM 4 | 0000352541-19-000047 | Apr 15, 2019 | Apr 11, 2019 |
| 4 | FORM 4 | 0000352541-19-000048 | Apr 15, 2019 | Apr 11, 2019 |
| DEF 14A | DEF 14A | 0000352541-19-000044 | Apr 8, 2019 | May 16, 2019 |
| 8-K | 8-K | 0001193125-19-093491 | Apr 1, 2019 | Mar 25, 2019 |
| S-8 | S-8 | 0000352541-19-000042 | Mar 15, 2019 | — |
| 4 | FORM 4 | 0000352541-19-000040 | Mar 8, 2019 | Mar 7, 2019 |
| 4 | FORM 4 | 0000352541-19-000036 | Mar 6, 2019 | Mar 4, 2019 |
| 4 | FORM 4 | 0000352541-19-000037 | Mar 6, 2019 | Mar 4, 2019 |
| 4 | FORM 4 | 0000352541-19-000038 | Mar 6, 2019 | Mar 4, 2019 |
| 3 | FORM 3 | 0000352541-19-000034 | Mar 4, 2019 | Feb 25, 2019 |
| 4 | FORM 4 | 0000352541-19-000031 | Feb 26, 2019 | Feb 22, 2019 |
| 4 | FORM 4 | 0000352541-19-000032 | Feb 26, 2019 | Feb 22, 2019 |
| 4 | FORM 4 | 0000352541-19-000030 | Feb 26, 2019 | Feb 22, 2019 |
| 4 | FORM 4 | 0000352541-19-000027 | Feb 26, 2019 | Feb 22, 2019 |
| 4 | FORM 4 | 0000352541-19-000028 | Feb 26, 2019 | Feb 22, 2019 |
| 4 | FORM 4 | 0000352541-19-000029 | Feb 26, 2019 | Feb 22, 2019 |
| 4 | FORM 4 | 0000352541-19-000025 | Feb 25, 2019 | Feb 21, 2019 |
| 4 | FORM 4 | 0000352541-19-000023 | Feb 25, 2019 | Feb 21, 2019 |
| 4 | FORM 4 | 0000352541-19-000024 | Feb 25, 2019 | Feb 21, 2019 |
| 4 | FORM 4 | 0000352541-19-000015 | Feb 25, 2019 | Feb 21, 2019 |
| 4 | FORM 4 | 0000352541-19-000017 | Feb 25, 2019 | Feb 21, 2019 |
| 4 | FORM 4 | 0000352541-19-000019 | Feb 25, 2019 | Feb 21, 2019 |
| 4 | FORM 4 | 0000352541-19-000021 | Feb 25, 2019 | Feb 21, 2019 |
| 4 | FORM 4 | 0000352541-19-000022 | Feb 25, 2019 | Feb 21, 2019 |
| 8-K | 8-K | 0000352541-19-000010 | Feb 22, 2019 | Feb 21, 2019 |
| 10-K | 10-K | 0000352541-19-000013 | Feb 22, 2019 | Dec 31, 2018 |
| 4 | FORM 4 | 0000352541-19-000004 | Feb 19, 2019 | Feb 15, 2019 |
| 4 | FORM 4 | 0000352541-19-000006 | Feb 19, 2019 | Feb 15, 2019 |
| 4 | FORM 4 | 0000352541-19-000003 | Feb 19, 2019 | Feb 15, 2019 |
| 8-K | 8-K | 0001193125-19-038048 | Feb 13, 2019 | Feb 11, 2019 |
| SC 13G/A | — | 0000932471-19-005021 | Feb 11, 2019 | — |
| SC 13G/A | — | 0000215457-19-003301 | Feb 4, 2019 | — |
| 4 | FORM 4 | 0001298509-19-000002 | Jan 14, 2019 | Jan 10, 2019 |
| 4 | FORM 4 SUBMISSION | 0000899243-19-001147 | Jan 14, 2019 | Jan 10, 2019 |
| 4 | FORM 4 SUBMISSION | 0000899243-19-001148 | Jan 14, 2019 | Jan 10, 2019 |
| 3 | FORM 3 | 0001763201-19-000004 | Jan 9, 2019 | Jan 1, 2019 |
| 3 | FORM 3 | 0001763198-19-000002 | Jan 9, 2019 | Jan 1, 2019 |
| CERT | — | 0001354457-18-000544 | Dec 31, 2018 | — |
| 25 | 25 | 0000352541-18-000096 | Dec 28, 2018 | — |
| 8-A12B | 8-A12B | 0000352541-18-000097 | Dec 28, 2018 | — |
| 8-K | 8-K | 0000352541-18-000093 | Dec 18, 2018 | Dec 13, 2018 |
| 8-K | FORM 8-K | 0001193125-18-350363 | Dec 17, 2018 | Dec 13, 2018 |
| 424B2 | 424B2 | 0001193125-18-350008 | Dec 14, 2018 | — |
| 424B5 | 424B5 | 0001193125-18-348851 | Dec 13, 2018 | — |