MKS INC — Director's Dealing 2013

Dec 4, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MKS INSTRUMENTS INC (MKSI)
CIK: 0001049502
Period of Report: 2013-11-29

Reporting Person: BAGSHAW SETH H (Vice President, CFO, Treasurer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-11-29	Common Stock	P	443.41	$23.962	Acquired	23302.627	Direct

Footnotes

F1: This purchase is pursuant to an employee benefit plan which satisfies the coverage and participation requirements of section 423 of the Internal Revenue Code.