WLK offering history
Every offering-related filing in WESTLAKE CORP’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 1,010 filings back to Feb 20, 2015.
| Date | Filing | What it means | |
|---|---|---|---|
| Nov 5, 2025 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Nov 4, 2025 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Nov 4, 2025 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Oct 31, 2025 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Nov 3, 2022 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Aug 6, 2021 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Aug 5, 2021 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Aug 5, 2021 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Jun 10, 2020 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jun 9, 2020 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jun 9, 2020 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Nov 7, 2019 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
| Jul 12, 2019 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jul 10, 2019 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Jul 10, 2019 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Nov 14, 2017 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Nov 13, 2017 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Nov 13, 2017 | FWP → | MARKETING | Free-writing prospectus — offering being marketed |
| Mar 27, 2017 | 424B5 → | EXECUTED | Shelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm) |
| Mar 27, 2017 | EFFECT → | EFFECTIVE | SEC declared a registration effective — selling can begin |
| Sep 8, 2016 | S-3ASR → | REGISTERED | Automatic shelf registration — effective immediately (large filers) |
Two honest limits. (1) A 424B takedown can price shares or notes — EDGAR’s metadata doesn’t say which, so open the document: large investment-grade filers use these mostly for bond deals (no dilution), small-caps mostly for shares. (2) At-the-market (ATM) programs sell shares gradually and individual sales are not separately filed — the visible footprint is the enabling shelf and its 424B5; actual ATM share counts surface later in the 10-Q/10-K share count. Educational information from public filings, not investment advice.
WLK offering FAQ
When did WLK last execute an offering?
Per SEC filings, WESTLAKE CORP's most recent priced offering document is a 424B5 filed 2025-11-05. Note a 424B takedown can price shares or notes (debt) — the linked document says which.
When did WLK last announce or register an offering?
The most recent registration is a S-3ASR filed 2025-10-31. A registration is capacity to sell shares — not a sale.
Does an offering always mean dilution?
Registered direct offerings and shelf takedowns issue new shares and dilute existing holders. Resale registrations (424B3/B7) let existing holders sell and do not create new shares. Secondary sales by insiders also do not dilute. Each row here is labeled with what it is.
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