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4//SEC Filing

STEWART WILLIAM D 4

Accession 0001127602-12-008807

CIK 0001049502other

Filed

Feb 29, 7:00 PM ET

Accepted

Mar 1, 12:09 PM ET

Size

12.6 KB

Accession

0001127602-12-008807

Insider Transaction Report

Form 4
Period: 2012-02-28
STEWART WILLIAM D
V.P. Vacuum Products & PFMC
Transactions
  • Exercise/Conversion

    Restricted Stock Unit

    2012-02-281,0189,437.097 total
    Common Stock (1,018 underlying)
  • Exercise/Conversion

    Common Stock

    2012-02-28+1,446.0791,446.079 total
  • Tax Payment

    Common Stock

    2012-02-28$30.63/sh767$23,4931,697.079 total
  • Exercise/Conversion

    Restricted Stock Unit

    2012-02-281,446.07910,252.158 total
    Common Stock (1,446.079 underlying)
  • Exercise/Conversion

    Common Stock

    2012-02-28+1,0182,464.079 total
Holdings
  • Common Stock

    (indirect: By Spouse)
    0.552
Footnotes (4)
  • [F1]Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.
  • [F2]This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person.
  • [F3]These RSUs are subject to the achievement of performance criteria determined in the first year of the grant and thereafter vests in equal annual installments over three years.
  • [F4]The RSUs vest in equal annual installments over three years.

Issuer

MKS INSTRUMENTS INC

CIK 0001049502

Entity typeother

Related Parties

1
  • filerCIK 0001202731

Filing Metadata

Form type
4
Filed
Feb 29, 7:00 PM ET
Accepted
Mar 1, 12:09 PM ET
Size
12.6 KB