Ameren Illinois Co — 424B2 Filings
23 424B2 filings on record
This page lists all 424B2 filings submitted to the SEC by Ameren Illinois Co (AILIP), sorted by most recent first. Each row links to the full filing on EdgarLookup. Ameren Illinois Co has filed 23 424B2 documents with the SEC since 1994. To view all SEC filings by Ameren Illinois Co, see the full filings list.
All
10-K
10-K/A
10-K405
10-Q
10-Q/A
11-K
3
424B2
424B3
424B5
425
5
8-A12G
8-K
8-K/A
ARS
CORRESP
DEF 14A
DEF 14C
DEFA14C
EFFECT
FWP
PRE 14A
RW
S-3
S-3/A
S-3ASR
S-3DPOS
S-4
S-4/A
SC 13G
SC 13G/A
U-3A-2
U-6B-2
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 424B2 | 424B2 | 0001104659-25-090464 | Sep 16, 2025 | — |
| 424B2 | 424B2 | 0001104659-25-016889 | Feb 25, 2025 | — |
| 424B2 | 424B2 | 0001104659-24-072776 | Jun 18, 2024 | — |
| 424B2 | 424B2 | 0001104659-23-064052 | May 24, 2023 | — |
| 424B2 | 424B2 | 0001104659-22-116419 | Nov 9, 2022 | — |
| 424B2 | 424B2 | 0001104659-22-091715 | Aug 16, 2022 | — |
| 424B2 | 424B2 | 0001104659-21-084628 | Jun 23, 2021 | — |
| 424B2 | 424B2 | 0001104659-21-084623 | Jun 23, 2021 | — |
| 424B2 | 424B2 | 0001104659-20-123496 | Nov 10, 2020 | — |
| 424B2 | 424B2 | 0001047469-19-006390 | Nov 19, 2019 | — |
| 424B2 | 424B2 | 0001047469-18-007078 | Nov 6, 2018 | — |
| 424B2 | 424B2 | 0001047469-18-003803 | May 15, 2018 | — |
| 424B2 | 424B2 | 0001047469-17-007157 | Nov 17, 2017 | — |
| 424B2 | 424B2 | 0001047469-16-016996 | Nov 30, 2016 | — |
| 424B2 | 424B2 | 0001047469-15-009119 | Dec 9, 2015 | — |
| 424B2 | 424B2 | 0001193125-14-433537 | Dec 4, 2014 | — |
| 424B2 | 424B2 | 0001193125-14-248891 | Jun 25, 2014 | — |
| 424B2 | 424B2 | 0001193125-13-465061 | Dec 6, 2013 | — |
| 424B2 | PROSPECTUS SUPPLEMENT | 0001193125-12-355950 | Aug 14, 2012 | — |
| 424B2 | 424B2 | 0001047469-06-008259 | Jun 12, 2006 | — |
| 424B2 | — | 0000018654-97-000024 | Jun 9, 1997 | — |
| 424B2 | — | 0000018654-97-000017 | Mar 25, 1997 | — |
| 424B2 | — | 0000018654-97-000016 | Mar 24, 1997 | — |