| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MKSI | Common Stock | Gift | $0 | -450 | -0.45% | $0.000000 | 100,000 | 20 Oct 2021 | By The Gerald G. Colella Living Trust | |
| holding | MKSI | Common Stock | 1,149 | 20 Oct 2021 | Direct |