ENTEGRIS INC — Director's Dealing 2014

Dec 5, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ENTEGRIS INC (ENTG)
CIK: 0001101302
Period of Report: 2014-12-03

Reporting Person: Morris Gregory Colburn (Sr.VP.Chief Commerical Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-12-03	Common Stock	M	7136	$8.76	Acquired	46878	Direct
2014-12-03	Common Stock	F	5520	$13.75	Disposed	41358	Direct
2014-12-03	Common Stock	M	7057	$9.27	Acquired	48415	Direct
2014-12-03	Common Stock	F	5622	$13.75	Disposed	42793	Direct
2014-12-03	Common Stock	M	11843	$9.88	Acquired	54636	Direct
2014-12-03	Common Stock	F	9763	$13.75	Disposed	44873	Direct
2014-12-04	Common Stock	S	5131	$13.7037	Disposed	39742	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-12-03	Employee Stock Option (Right to Buy)	$8.76	M	7136	Disposed	2018-02-19	Common Stock (7136)	Direct
2014-12-03	Employee Stock Option (Right to Buy)	$9.27	M	7057	Disposed	2019-02-19	Common Stock (7057)	Direct
2014-12-03	Employee Stock Option (Right to Buy)	$9.88	M	11843	Disposed	2020-02-19	Common Stock (11843)	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 $13.70 to $13.71, 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: This option vests in four equal annual installments starting on February 19, 2012 and thereafter on February 19, 2013, February 19, 2014 and February 19, 2015.

F3: The option vests in four equal annual installments starting on February 19, 2013 and thereafter on February 19, 2014, February 19, 2015 and February 19, 2016.

F4: The option vests in four equal annual installments starting on February 19, 2014 and thereafter on February 19, 2015, February 19, 2016 and February 19, 2017.

F5: This option was granted pursuant to an employee stock option plan that provides for the grant of options in consideration of services as an employee.