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| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| MKSI | Schreiner James Alan | EVP & COO | Jun 12 '26 | Sale | 345.82 | 3,500 | 1,210,371 | 19,201 | Jun 16 |
| MKSI | Schreiner James Alan | EVP & COO | Jun 10 '26 | Sale | 317.42 | 781 | 247,905 | 22,701 | Jun 11 |
| MKSI | Schreiner James Alan | EVP & COO | Feb 24 '26 | Sale | 255.00 | 4,100 | 1,045,500 | 23,402 | Feb 25 |
| MKSI | Schreiner James Alan | EVP & COO | Feb 17 '26 | Option Exercise | 0.00 | 9,225 | 0 | 31,846 | Feb 18 |
| MKSI | Schreiner James Alan | EVP & COO | Oct 22 '25 | Sale | 138.68 | 711 | 98,601 | 22,535 | Oct 23 |
| MKSI | Schreiner James Alan | EVP & COO | Sep 18 '25 | Sale | 124.00 | 838 | 103,912 | 23,246 | Sep 19 |
| MKSI | Schreiner James Alan | EVP & COO | Aug 18 '25 | Option Exercise | 0.00 | 2,641 | 0 | 25,333 | Aug 19 |
| MKSI | Schreiner James Alan | EVP & COO, MSD | Jul 07 '25 | Sale | 102.44 | 957 | 98,035 | 22,692 | Jul 08 |
| MKSI | Schreiner James Alan | EVP & COO, MSD | Feb 18 '25 | Option Exercise | 0.00 | 8,341 | 0 | 27,145 | Feb 19 |
| MKSI | Schreiner James Alan | EVP & COO, MSD | Aug 19 '24 | Option Exercise | 0.00 | 3,961 | 0 | 20,578 | Aug 20 |
| MKSI | Schreiner James Alan | EVP & COO, MSD | Feb 15 '24 | Option Exercise | 0.00 | 8,657 | 0 | 20,224 | Feb 16 |