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MKS INC — Director's Dealing 2011
May 4, 2011
30723_dirs_2011-05-04_b5c78ca4-af2f-447b-9953-a2a714221dab.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: 2011-05-03
Reporting Person: STEWART WILLIAM D (VP, Vacuum Products)
Non-Derivative Transactions
| Date | Security | Code | Shares | Price | A/D | Holdings After | Ownership |
|---|---|---|---|---|---|---|---|
| 2011-05-03 | Common Stock | M | 1000 | — | Acquired | 8886 | Direct |
| 2011-05-03 | Common Stock | F | 311 | $25.85 | Disposed | 8575 | Direct |
Derivative Transactions
| Date | Security | Exercise Price | Code | Shares | A/D | Expiration | Underlying | Ownership |
|---|---|---|---|---|---|---|---|---|
| 2011-05-03 | Restricted Stock Unit | $ | M | 1000 | Disposed | Common Stock (1000) | Direct |
Footnotes
F1: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.
F2: The RSUs vest in equal annual installments over three years.
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