Chao David Tsung-Hung
Insider transactions at 1 company
This page shows all SEC Form 4 filings attributed to Chao David Tsung-Hung. Form 4 disclosures are required whenever a corporate insider — director, officer, or 10%+ shareholder — buys, sells, or receives company stock. Each row represents a separate reported transaction. All data is sourced directly from the SEC EDGAR public database.
| Company | Title | Type | Shares | Price | Value | Date |
|---|---|---|---|---|---|---|
| WLK | Option Exercise | 1,128 | — | — | Aug 9, 2025 | |
| WLK | Sale | 1,750 | $129.08 | $225,890 | Nov 29, 2024 | |
| WLK | Sale | 1,750 | $130.00 | $227,500 | Nov 22, 2024 | |
| WLK | Option Exercise | 1,136 | — | — | Aug 11, 2024 | |
| WLK | Gift | 19,423 | — | — | Aug 31, 2023 | |
| WLK | Sale | 1,000 | $131.00 | $131,000 | Aug 23, 2023 | |
| WLK | Option Exercise | 1,446 | — | — | Aug 12, 2023 | |
| WLK | Option Exercise | 1,763 | — | — | Aug 13, 2022 | |
| WLK | Option Exercise | 2,400 | — | — | Aug 14, 2021 | |
| WLK | Option Exercise | 2,387 | — | — | Aug 16, 2020 | |
| WLK | Option Exercise | 1,409 | — | — | Aug 17, 2019 | |
| WLK | Option Exercise | 1,090 | — | — | Jan 5, 2019 |