Filings (90d)
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies John Tsung-Chen Chao files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Albert Chao - $6.13M in WLK purchases and sales in the last 12 months
- Mark Steven Bender - $3.60M in WLK purchases and sales in the last 12 months
- Robert F. Buesinger - $461K in WLK purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
Who is John Tsung-Chen Chao?
John Tsung-Chen Chao is a corporate insider of WESTLAKE CORP (WLK). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did John Tsung-Chen Chao last file a Form 4?
The most recent primary Form 4 on record is dated 23 February 2026, one of 2 filings going back to 2026.
