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MKS INC — Director's Dealing 2025
Apr 17, 2025
30723_dirs_2025-04-17_93c1e3aa-2638-47b8-95c8-9d430b7c3be1.zip
Director's Dealing
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SEC Form 4 — Statement of Changes in Beneficial Ownership
Issuer: MKS INSTRUMENTS INC (MKSI)
CIK: 0001049502
Period of Report: 2025-04-15
Reporting Person: McCarthy Michelle M (VP & Chief Accounting Officer)
Non-Derivative Transactions
| Date | Security | Code | Shares | Price | A/D | Holdings After | Ownership |
|---|---|---|---|---|---|---|---|
| 2025-04-15 | Common Stock | M | 968 | — | Acquired | 968 | Direct |
| 2025-04-15 | Common Stock | M | 1106 | — | Acquired | 2074 | Direct |
| 2025-04-15 | Common Stock | F | 608 | $68.48 | Disposed | 1466 | Direct |
Derivative Transactions
| Date | Security | Exercise Price | Code | Shares | A/D | Expiration | Underlying | Ownership |
|---|---|---|---|---|---|---|---|---|
| 2025-04-15 | Restricted Stock Unit | $ | M | 968 | Disposed | Common Stock (968) | Direct | |
| 2025-04-15 | Restricted Stock Unit | $ | M | 1106 | Disposed | Common Stock (1106) | Direct | |
| 2025-04-15 | Restricted Stock Unit | $ | A | 5209.884 | Acquired | Common Stock (5209.884) | Direct |
Footnotes
F1: Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of MKS Instruments, Inc.
F2: These shares were withheld by MKS Instruments, Inc. to satisfy the tax withholding obligations triggered by the vesting of RSUs and do not represent a discretionary trade by the reporting person.
F3: These RSUs vest in three equal annual installments commencing on April 15, 2025, provided that if, in any vesting year, April 15th is not a business day, such vesting shall occur on the next business day.
F4: These RSUs vest in three equal annual installments commencing on April 15, 2026, provided that if, in any vesting year, April 15th is not a business day, such vesting shall occur on the next business day.