Insider · CIK 0001726418
David Tsung-Hung Chao
Files at: WLK. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 8, 2026 MForm 4 → | Aug 10, 1:50 pm EDT | WESTLAKE CORPWLK | 2,168 | — | — | 11,080 | — | |
| Jan 5, 2019 MForm 4 → | Jan 7, 3:07 pm EST | WESTLAKE CHEMICAL CORPWLK | 1,090 | — | — | 1,743 | — | plan? |
Reported trades — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 14, 2026 AForm 4 → | Aug 17, 12:25 pm EDT | WESTLAKE CORPWLK | 2,184 | — | — | 2,184 | — | |
| Aug 8, 2026 MForm 4 → | Aug 10, 1:50 pm EDT | WESTLAKE CORPWLK | 2,168 | — | — | 2,168 | — | |
| Jan 5, 2019 MForm 4 → | Jan 7, 3:07 pm EST | WESTLAKE CHEMICAL CORPWLK | 1,090 | — | — | 0 | — | |
| Aug 17, 2018 AForm 4 → | Aug 20, 10:49 am EDT | WESTLAKE CHEMICAL CORPWLK | 1,409 | — | — | 1,409 | — | |
| Jan 5, 2018 AForm 4 → | Jan 9, 8:57 am EST | WESTLAKE CHEMICAL CORPWLK | 1,090 | — | — | 1,090 | — |