ENTEGRIS INC — Director's Dealing 2012

May 2, 2012

SEC Form 4/A — Form 4/A

Issuer: ENTEGRIS INC (ENTG)
CIK: 0001101302
Period of Report: 2010-06-15

Reporting Person: MCDANIEL ROGER D (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-06-15	Common Stock	S	10000	$4.5901	Disposed	147962	Direct

Footnotes

F1: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 10, 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 Secretaries & Corporate Governance Professionals dated June 25, 2008. These shares were sold in multiple transactions at prices ranging from $4.50 to $4.65, 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 filing is being amended to adjust an overstatement of 10,000 shares of Common Stock beneficially owned as reported in the Form 4 filed on June 16, 2010 in Table I, Box 5. Forms 4 filed after June 16, 2010 also included the overstatement of shares.