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| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| WLK | Bender Mark Steven | EVP & CFO | May 12 '26 | Option Exercise | 0.00 | 13,164 | 0 | 41,179 | May 14 |
| WLK | Bender Mark Steven | EVP & CFO | Mar 27 '26 | Sale | 112.53 | 16,413 | 1,847,037 | 28,015 | Mar 30 |
| WLK | Bender Mark Steven | EVP & CFO | Feb 27 '26 | Sale | 100.92 | 17,409 | 1,756,997 | 44,433 | Mar 02 |
| WLK | Bender Mark Steven | EVP & CFO | Feb 27 '26 | Option Exercise | 76.42 | 12,693 | 969,949 | 74,535 | Mar 02 |
| WLK | Bender Mark Steven | EVP & CFO | Feb 17 '26 | Option Exercise | 0.00 | 4,751 | 0 | 61,719 | Feb 19 |
| WLK | Bender Mark Steven | EVP & CFO | Feb 18 '25 | Option Exercise | 0.00 | 13,987 | 0 | 56,125 | Feb 20 |
| WLK | Bender Mark Steven | EVP & CFO | Aug 13 '24 | Option Exercise | 0.00 | 2,938 | 0 | 43,294 | Aug 15 |
| WLK | Bender Mark Steven | EVP & CFO | May 03 '24 | Sale | 152.19 | 4,950 | 753,341 | 40,356 | May 06 |
| WLK | Bender Mark Steven | EVP & CFO | Mar 06 '24 | Sale | 141.02 | 4,804 | 677,455 | 45,306 | Mar 07 |
| WLK | Bender Mark Steven | EVP & CFO | Feb 26 '24 | Sale | 137.57 | 4,854 | 667,765 | 50,110 | Feb 28 |
| WLK | Bender Mark Steven | EVP & CFO | Feb 19 '24 | Option Exercise | 0.00 | 5,558 | 0 | 61,108 | Feb 21 |
| WLK | Bender Mark Steven | EVP & CFO | Aug 07 '23 | Option Exercise | 96.90 | 49,278 | 4,774,906 | 69,039 | Aug 09 |
| WLK | Bender Mark Steven | EVP & CFO | May 08 '23 | Option Exercise | 65.81 | 2,168 | 142,682 | 45,484 | May 10 |
| WLK | Bender Mark Steven | EVP and CFO | Feb 27 '23 | Option Exercise | 65.81 | 6,000 | 394,876 | 53,432 | Feb 28 |
| WLKP | Bender Mark Steven | SVP, CFO | Mar 13 '20 | Buy | 14.91 | 1,000 | 14,914 | 14,000 | Mar 16 |
| WLKP | Bender Mark Steven | SVP, CFO | Mar 12 '20 | Buy | 15.07 | 1,000 | 15,073 | 13,000 | Mar 16 |
| WLKP | Bender Mark Steven | SVP, CFO and Treasurer | Feb 27 '18 | Buy | 23.77 | 2,000 | 47,535 | 12,000 | Feb 27 |
| WLKP | Bender Mark Steven | Sr VP, CFO | Aug 04 '14 | Buy | 24.00 | 10,000 | 240,000 | 10,000 | Aug 06 |