ENTEGRIS INC — Director's Dealing 2011

Nov 10, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ENTEGRIS INC (ENTG)
CIK: 0001101302
Period of Report: 2011-11-08

Reporting Person: Shaner William James (Vice President, GM, ME Div.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-11-08	Common Stock	M	9922	$5.90	Acquired	65488	Direct
2011-11-08	Common Stock	S	9922	$9.0016	Disposed	55566	Direct
2011-11-08	Common Stock	M	15078	$5.90	Acquired	70644	Direct
2011-11-08	Common Stock	S	15078	$9.0016	Disposed	55566	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-11-08	Employee Stock Option (Right to Buy)	$5.90	M	9922	Disposed	2012-10-15	Common Stock (9922)	Direct
2011-11-08	Employee Stock Option (Right to Buy)	$5.90	M	15078	Disposed	2012-10-15	Common Stock (15078)	Direct

Footnotes

F1: The price reported in column 4 is a weighted average price reported in reliance on a letter from the Office of Chief Counsel, Securities and Exchange Commission's Division of Corporate Finance to the Society of Corporate Secretaries & Corporate Governance Professionals dated June 25, 2008. These shares were sold in multiple transactions at prices ranging from $9.00 to $9.03, inclusive. The reporting person undertakes to provide Entegris, Inc. any shareholder of Entegris, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F2: These options are fully vested.

F3: These options were granted pursuant to an employee stock option plan that provides for the grant of options in consideration of services as an employee.