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: 2009-01-21

Reporting Person: WALCOTT PETER W (SR V.P. & General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-01-21	Common Stock	S	0	$1.66	Disposed	85878	Direct

Footnotes

F1: This filing is being amended to adjust an overstatement of 2,808 shares sold as reported in the Form 4 filed on January 23, 2009 in Table I, Box 4 and therefore, an understatement of 2,808 in the number of shares of Common Stock beneficially owned following the otherwise accurately reported transaction as set forth in Table I, Box 5. The 2,808 shares merely represented the total of the other sales reported on January 21, 2009 and were inadvertently included as a separate sale on the Form 4. Subsequent transactions included in the Form 4 filed on January 23, 2009 and Forms 4 and Forms 4/A filed after January 23, 2009 also included the error.