ENTEGRIS INC — Director's Dealing 2017

Feb 28, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ENTEGRIS INC (ENTG)
CIK: 0001101302
Period of Report: 2017-02-24

Reporting Person: Burns Robert Nicholas (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-02-24	Common Stock	M	7500	$8.47	Acquired	46139	Direct
2017-02-24	Common Stock	F	2921	$21.75	Disposed	43218	Direct
2017-02-28	Common Stock	S	4579	$21.5375	Disposed	38639	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-02-24	Employee Stock Option (Right to Buy)	$8.47	M	7500	Disposed	2018-05-04	Common Stock (7500)	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 and Corporate Governance Professionals dated June 25, 2008. These shares were sold in multiple transactions at prices ranging from $21.50 to $21.56, 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 is fully vested.

F3: This option was granted pursuant to the Entegris, Inc. 2010 Stock Plan in consideration of services as a Director.