WESTLAKE CORP — 424B5 Filings
17 424B5 filings on record
This page lists all 424B5 filings submitted to the SEC by WESTLAKE CORP (WLK), sorted by most recent first. Each row links to the full filing on EdgarLookup. WESTLAKE CORP has filed 17 424B5 documents with the SEC since 2014. To view all SEC filings by WESTLAKE CORP, see the full filings list.
All
10-K
10-Q
144
3
3/A
4
4/A
424B4
424B5
425
8-A12B
8-K
8-K/A
ARS
CERT
CORRESP
DEF 14A
DEFA14A
DEFC14A
DFAN14A
DFRN14A
EFFECT
FWP
POS AM
POSASR
PRE 14A
PREC14A
PRRN14A
PX14A6G
S-1
S-1/A
S-3
S-3/A
S-3ASR
S-4
S-4/A
S-8
SC 13G
SC 13G/A
SC TO-C
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 424B5 | 424B5 | 0001193125-25-267197 | Nov 5, 2025 | — |
| 424B5 | 424B5 | 0001193125-25-263703 | Nov 4, 2025 | — |
| 424B5 | 424B5 | 0001193125-21-239427 | Aug 6, 2021 | — |
| 424B5 | 424B5 | 0001193125-21-237105 | Aug 5, 2021 | — |
| 424B5 | 424B5 | 0001193125-20-165790 | Jun 10, 2020 | — |
| 424B5 | 424B5 | 0001193125-20-164273 | Jun 9, 2020 | — |
| 424B5 | 424B5 | 0001193125-19-192520 | Jul 12, 2019 | — |
| 424B5 | 424B5 | 0001193125-19-191510 | Jul 10, 2019 | — |
| 424B5 | 424B5 | 0001193125-17-342725 | Nov 14, 2017 | — |
| 424B5 | 424B5 | 0001193125-17-340023 | Nov 13, 2017 | — |
| 424B5 | 424B5 | 0001193125-17-097560 | Mar 27, 2017 | — |
| 424B5 | DEFINITIVE PROSPECTUS SUPPLEMENT | 0001193125-12-299959 | Jul 11, 2012 | — |
| 424B5 | 424(B)(5) | 0001193125-12-298259 | Jul 10, 2012 | — |
| 424B5 | DEFINITIVE PROSPECTUS SUPPLEMENT | 0001193125-06-091178 | Apr 27, 2006 | — |
| 424B5 | PRELIMINARY PROSPECTUS SUPPLEMENT | 0001193125-06-083766 | Apr 20, 2006 | — |
| 424B5 | 424(B)(5) | 0001193125-06-004887 | Jan 11, 2006 | — |
| 424B5 | 424(B)(5) | 0001193125-06-003204 | Jan 9, 2006 | — |