PAGEInsider
| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| WLK | Chao David Tsung-Hung | Director | Aug 08 '26 | Option Exercise | 0.00 | 2,168 | 0 | 11,080 | Aug 10 |
| WLK | Chao David Tsung-Hung | Director | Aug 09 '25 | Option Exercise | 0.00 | 1,128 | 0 | 8,912 | Aug 11 |
| WLK | Chao David Tsung-Hung | Director | Nov 29 '24 | Sale | 129.08 | 1,750 | 225,888 | 7,784 | Dec 02 |
| WLK | Chao David Tsung-Hung | Director | Nov 22 '24 | Sale | 130.00 | 1,750 | 227,500 | 9,534 | Nov 25 |
| WLK | Chao David Tsung-Hung | Director | Aug 11 '24 | Option Exercise | 0.00 | 1,136 | 0 | 11,284 | Aug 12 |
| WLK | Chao David Tsung-Hung | director, 10 percent owner: | Aug 23 '23 | Sale | 131.00 | 1,000 | 131,000 | 10,148 | Aug 24 |
| WLK | Chao David Tsung-Hung | director, 10 percent owner: | Aug 12 '23 | Option Exercise | 0.00 | 1,446 | 0 | 11,148 | Aug 14 |