ENTEGRIS INC — Director's Dealing 2012

May 14, 2012

SEC Form 4/A — Form 4/A

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

Reporting Person: Morris Gregory Colburn (Vice President, GM, Field Ops.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-01	Common Stock	M	14746	$7.07	Acquired	73433	Direct

Footnotes

F1: This filing is being amended to adjust an understatement of 2,000 shares of Common Stock beneficially owned following the otherwise accurately reported transaction as set forth in the Form 4 filed on February 3, 2011 in Table I, Box 5. Subsequent transactions included in the Form 4 filed on February 3, 2011 and Forms 4 and Forms 4/A filed after February 3, 2011 also included the understatement of shares.