Chao Albert
Insider transactions at 2 companies
This page shows all SEC Form 4 filings attributed to Chao Albert. 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 | Executive Chairman | Sale | 30,604 | $73.80 | $2,258,575 | Dec 22, 2025 |
| WLK | Executive Chairman | Tax Withholding | 13,390 | $110.54 | $1,480,131 | Feb 20, 2025 |
| WLK | Executive Chairman | Tax Withholding | 249 | $112.73 | $28,070 | Feb 18, 2025 |
| WLK | Executive Chairman | Option Exercise | 45,298 | $68.09 | $3,084,341 | Aug 16, 2024 |
| WLK | President & CEO | Award / Grant | 39,738 | — | — | Feb 20, 2024 |
| WLK | President & CEO | Disposition | 8,397 | $131.94 | $1,107,900 | Aug 31, 2023 |
| WLK | President & CEO | Disposition | 2,315 | $134.60 | $311,599 | Aug 30, 2023 |
| WLK | President & CEO | Award / Grant | 52,252 | — | — | Feb 17, 2023 |
| WLK | President & CEO | Tax Withholding | 20,867 | $104.32 | $2,176,845 | Feb 17, 2023 |
| WLK | President & CEO | Option Exercise | 26,048 | — | — | Feb 15, 2023 |
| WLK | President & CEO | Sale | 12,016 | $131.11 | $1,575,418 | May 19, 2022 |
| WLK | President and CEO | Award / Grant | 30,577 | — | — | Mar 14, 2022 |
| WLK | President and CEO | Award / Grant | 30,577 | — | — | Feb 18, 2022 |
| WLK | President & CEO | Tax Withholding | 5,722 | $104.96 | $600,581 | Feb 16, 2022 |
| WLK | President & CEO | Option Exercise | 30,787 | $30.05 | $925,149 | Dec 2, 2021 |
| WLK | President & CEO | Sale | 9,656 | $89.47 | $863,922 | Dec 1, 2021 |
| WLK | President & CEO | Purchase | 3,000 | $86.21 | $258,630 | Aug 11, 2021 |
| WLK | President & CEO | Tax Withholding | 3,685 | $85.08 | $313,520 | Feb 16, 2021 |
| WLK | President & CEO | Option Exercise | 3,966 | — | — | Feb 16, 2021 |
| WLK | President & CEO | Tax Withholding | 10 | $87.69 | $877 | Feb 14, 2021 |
| WLK | President & CEO | Sale | 4,198 | $75.12 | $315,354 | Nov 6, 2020 |
| WLKP | President & CEO | Purchase | 3,200 | $13.46 | $43,072 | Mar 24, 2020 |
| WLKP | President & CEO | Purchase | 4,780 | $13.12 | $62,714 | Mar 23, 2020 |
| WLKP | President & CEO | Purchase | 12,281 | $13.86 | $170,215 | Mar 20, 2020 |
| WLKP | President & CEO | Purchase | 7,035 | $14.20 | $99,897 | Mar 19, 2020 |
| WLKP | President & CEO | Purchase | 5,796 | $12.12 | $70,248 | Mar 18, 2020 |
| WLKP | President & CEO | Purchase | 3,680 | $14.26 | $52,477 | Mar 17, 2020 |
| WLKP | President & CEO | Purchase | 7,535 | $14.15 | $106,620 | Mar 16, 2020 |
| WLKP | President & CEO | Purchase | 3,580 | $15.18 | $54,344 | Mar 13, 2020 |
| WLK | President & CEO | Option Exercise | 57,800 | $10.26 | $593,028 | Feb 21, 2020 |
| WLK | President & CEO | Option Exercise | 68,698 | $10.26 | $704,841 | Feb 21, 2020 |
| WLK | President & CEO | Tax Withholding | 380 | $61.26 | $23,279 | Feb 18, 2020 |
| WLK | President & CEO | Tax Withholding | 6,547 | $73.29 | $479,830 | Feb 18, 2019 |
| WLKP | President & CEO | Purchase | 10,386 | $23.24 | $241,371 | Nov 19, 2018 |
| WLKP | President & CEO | Purchase | 2,492 | $23.20 | $57,814 | Nov 16, 2018 |
| WLK | President & CEO | Sale | 17,389 | $71.62 | $1,245,400 | Nov 16, 2018 |
| WLK | President & CEO | Option Exercise | 30,639 | $7.12 | $218,150 | Nov 15, 2018 |
| WLKP | President & CEO | Purchase | 6,220 | $23.24 | $144,553 | Nov 14, 2018 |
| WLK | President & CEO | Sale | 3,600 | $72.47 | $260,892 | Nov 13, 2018 |
| WLKP | President & CEO | Purchase | 2,000 | $23.16 | $46,320 | Mar 6, 2018 |
| WLKP | President & CEO | Purchase | 2,000 | $22.86 | $45,720 | Mar 5, 2018 |
| WLKP | President & CEO | Purchase | 2,500 | $22.98 | $57,450 | Mar 1, 2018 |
| WLK | President & CEO | Option Exercise | 13,585 | — | — | Feb 21, 2018 |
| WLKP | President & CEO | Purchase | 7,425 | $22.00 | $163,350 | Nov 28, 2017 |
| WLK | President & CEO | Option Exercise | 25,000 | $9.65 | $241,250 | Nov 28, 2017 |
| WLKP | President & CEO | Purchase | 2,900 | $21.97 | $63,713 | Nov 27, 2017 |
| WLK | President & CEO | Sale | 2,966 | $94.25 | $279,546 | Nov 27, 2017 |
| WLK | President & CEO | Sale | 20,000 | $94.58 | $1,891,600 | Nov 24, 2017 |
| WLKP | President & CEO | Purchase | 2,000 | $21.49 | $42,980 | Nov 22, 2017 |
| WLKP | President & CEO | Purchase | 2,000 | $21.49 | $42,980 | Nov 22, 2017 |