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Home > Insider Trading > Filing (0001127602-11-006745)

Filing Details

Accession Number:: 0001127602-11-006745
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2011-02-22 16:09:17
Reporting Period:: 2011-02-17

Filing Date:: 2011-02-22
Accepted Time:: 2011-02-22 16:09:17
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1049502	Mks Instruments Inc	MKSI	Industrial Instruments For Measurement, Display, And Control (3823)	042277512

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1192439	H Seth Bagshaw	C/O Mks 2 Tech Drive, Suite 201 Andover MA 01810	Vice President, Cfo	No	Yes	No	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2011-02-17	656	$30.54	0	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct

Reported Derivative Transactions

Show Other Fields >>

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Restricted Stock Unit	Disposition	2011-02-17	100	$0.00	0	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
8,300			No	4	J	Direct

Footnotes

Each restricted stock unit represents the contingent right to receive one share of common stock of MKS Instruments, Inc.
This transaction reflects the forfeiture of RSUs due to performance criteria
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.