Westlake Corp
WLK- Exchange
- NYSE
- Industry
- Industrial Organic Chemicals
- SEC CIK
- 0001262823
In the last 90 days, Westlake Corp insiders filed 0 open-market purchases and 1 sale; 360 institutions reported holding it in 13F filings for Q2 2026, worth $2.90B in total; no superinvestor holds it.
Holders of 5% or more of WLK
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Westlake Corp, largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of Westlake Corp on Schedule 13D or 13G.
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
Schedule 13D and 13G filings on Westlake Corp, newest first.
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Westlake Corp shares.
No Form 144 notices for Westlake Corp are on file.