ENTEGRIS INC — Director's Dealing 2011

Feb 3, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ENTEGRIS INC (ENTG)
CIK: 0001101302
Period of Report: 2011-02-01

Reporting Person: Edlund Todd James (Vice President, GM CCS Div)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-01	Common Stock	M	25000	$8.04	Acquired	99077	Direct
2011-02-01	Common Stock	S	25000	$8.1939	Disposed	74077	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-02-01	Common Stock	$8.04	M	25000	Disposed	2011-10-15	Common Stock (25000)	Direct

Footnotes

F1: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on November 17, 2010.

F2: 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 Securities & Corporate Governance Professionals dated June 25, 2008. These shares were sold in multiple transactions at prices ranging from $8.17 to $8.27, 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.

F3: This option is fully vested.

F4: These options were awarded pursuant to a stock option plan that provides for the award of options in consideration of services as an employee.