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MKS INC — Director's Dealing 2026
Feb 23, 2026
30723_dirs_2026-02-23_4171072d-aa02-44ce-a28a-bbc7c0cd88dd.zip
Director's Dealing
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SEC Form 4 — Statement of Changes in Beneficial Ownership
Issuer: MKS INC (MKSI)
CIK: 0001049502
Period of Report: 2026-02-20
Reporting Person: Lee John Tseng-Chung (Director, President & CEO)
Non-Derivative Transactions
| Date | Security | Code | Shares | Price | A/D | Holdings After | Ownership |
|---|---|---|---|---|---|---|---|
| 2026-02-20 | Common Stock | S | 13310 | $256.0538 | Disposed | 171386.1077 | Direct |
| 2026-02-20 | Common Stock | S | 12812 | $256.9313 | Disposed | 158574.1077 | Direct |
| 2026-02-20 | Common Stock | S | 1988 | $257.8084 | Disposed | 156586.1077 | Direct |
| 2026-02-20 | Common Stock | S | 1890 | $259.7032 | Disposed | 154696.1077 | Direct |
Footnotes
F1: This transaction was executed in multiple trades at prices ranging from $255.425 to $256.415. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.
F2: This transaction was executed in multiple trades at prices ranging from $256.4275 to $257.275. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.
F3: This transaction was executed in multiple trades at prices ranging from $257.445 to $258.320. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.
F4: This transaction was executed in multiple trades at prices ranging from $259.170 to $259.920. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.