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MKS INC Director's Dealing 2015

Apr 3, 2015

30723_dirs_2015-04-03_9a591bbd-7052-4bae-bcfa-c7221e2164ff.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: 2015-04-02

Reporting Person: Quirk Brian Charles (Sr. VP, Global Operations)

Non-Derivative Transactions

Date Security Code Shares Price A/D Holdings After Ownership
2015-04-02 Common Stock M 2469.407 $33.74 Acquired 8905.042 Direct
2015-04-02 Common Stock F 803 $33.74 Disposed 8102.042 Direct

Derivative Transactions

Date Security Exercise Price Code Shares A/D Expiration Underlying Ownership
2015-04-02 Restricted Stock Unit $ M 2469.407 Disposed Common Stock (2469.407) Direct

Footnotes

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.

F2: Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.

F3: These RSUs vest in three equal annual installments commencing on the first anniversary of the grant date, with the exception of RSUs granted on or after February 15, 2015, in which case, the annual vesting date shall be (i) February 15th or (ii) the next business day if February 15th is not a business day.