MKS INSTRUMENT INC filings

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SEC filings by MKS INSTRUMENT INC (ownership)
TypeFiledFilerSubjectShares OwnedPercent Owned
SC 13G/A2017-02-01ROYCE & ASSOCIATES LPMKS INSTRUMENTS INC2,328,6134.4%EDGAR
SC 13G/A2017-01-12BlackRock Inc.MKS INSTRUMENTS INC6,159,78911.5%EDGAR
SC 13G/A2016-10-07BlackRock Inc.MKS INSTRUMENTS INC5,516,59110.3%EDGAR
SC 13G/A2016-02-10VANGUARD GROUP INCMKS INSTRUMENTS INC3,958,0237.4%EDGAR
SC 13G/A2016-02-09DIMENSIONAL FUND ADVISORS LPMKS INSTRUMENTS INC4,055,1297.6%EDGAR
SC 13G/A2016-01-26BlackRock Inc.MKS INSTRUMENTS INC4,942,2409.3%EDGAR
SC 13G/A2016-01-19ROYCE & ASSOCIATES LLCMKS INSTRUMENTS INC4,862,9949.1%EDGAR
SC 13G/A2015-02-11VANGUARD GROUP INCMKS INSTRUMENTS INC3,505,8726.6%EDGAR
SC 13G/A2015-02-05DIMENSIONAL FUND ADVISORS LPMKS INSTRUMENTS INC3,613,7926.8%EDGAR
SC 13G/A2015-01-22BlackRock Inc.MKS INSTRUMENTS INC4,626,2088.7%EDGAR
SC 13G/A2015-01-13ROYCE & ASSOCIATES LLCMKS INSTRUMENTS INC6,739,26312.7%EDGAR
SC 13G/A2014-02-11VANGUARD GROUP INCMKS INSTRUMENTS INC3,444,4176.5%EDGAR
SC 13G/A2014-02-10DIMENSIONAL FUND ADVISORS LPMKS INSTRUMENTS INC3,353,9916.3%EDGAR
SC 13G/A2014-02-05ROYCE & ASSOCIATES LLCMKS INSTRUMENTS INC7,936,05214.9%EDGAR
SC 13G/A2014-01-30BlackRock Inc.MKS INSTRUMENTS INC4,656,4478.7%EDGAR
SC 13G/A2014-01-16KORNITZER CAPITAL MANAGEMENT INC /KSMKS INSTRUMENTS INC00.0%EDGAR
SC 13G/A2014-01-13ROYCE & ASSOCIATES LLCMKS INSTRUMENTS INC7,984,20015.0%EDGAR
SC 13G/A2013-02-12VANGUARD GROUP INCMKS INSTRUMENTS INC3,099,5915.9%EDGAR
SC 13G/A2013-02-11DIMENSIONAL FUND ADVISORS LPMKS INSTRUMENTS INC2,989,9875.7%EDGAR
SC 13G/A2013-02-08BlackRock Inc.MKS INSTRUMENTS INC4,071,5877.7%EDGAR
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