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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1101302	Entegris Inc	ENTG	Plastics Products, Nec (3089)	411941551

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1485428	James William Shaner	9754 Summit Ash Court Colorado Springs CO 80920	Vice President, Gm, Me Div.	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2010-05-03	7,000	$1.13	80,560	No	4	M	Direct
Common Stock	Disposition	2010-05-03	7,000	$6.63	73,560	No	4	S	Direct
Common Stock	Disposition	2010-05-03	1,750	$6.63	71,810	No	4	S	Direct
Common Stock	Disposition	2010-05-03	1,316	$6.47	70,494	No	4	S	Direct

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

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (Right to Buy)	Disposition	2010-05-03	7,000	$0.00	7,000	$1.13

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
60,000		2016-02-19	No	4	M	Direct

Footnotes

This amendment is to correct an overstatement in the Table 1, Item 5 Amount of Securities Beneficially Owned that were previously reported in the Reporting Person's May 5, 2010 Form 4.
These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 24, 2010.
This option is exercisable in three equal installments. The first installment became exercisable on 2/19/2010, the second installment becomes exercisable on 2/19/2011 and the last installment becomes exercisable on 2/19/2012.
These options were awarded pursuant to a stock option plan that provides for the award of options in consideration of services as an employee.