ENTEGRIS INC — Director's Dealing 2018

Feb 22, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ENTEGRIS INC (ENTG)
CIK: 0001101302
Period of Report: 2018-02-20

Reporting Person: GRAVES GREGORY B (EVP & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-02-20	Common Stock	M	15138	$13.49	Acquired	95927	Direct
2018-02-20	Common Stock	M	22029	$12.20	Acquired	117956	Direct
2018-02-20	Common Stock	S	37167	$33.6477	Disposed	80789	Direct
2018-02-20	Common Stock	S	13911	$33.5844	Disposed	66878	Direct
2018-02-22	Common Stock	S	5400	$33.1166	Disposed	61478	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-02-20	Employee Stock Option (Right to Buy)	$13.49	M	15138	Disposed	2022-02-19	Common Stock (15138)	Direct
2018-02-20	Employee Stock Option (Right to Buy)	$12.20	M	22029	Disposed	2023-02-19	Common Stock (22029)	Direct

Footnotes

F1: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on May 12, 2017.

F2: The price in column 4 is a weighted average price reported in reliance to 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 ranges from $32.75 to $33.95, inclusive. The Reporting Person understakes 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 of this footnote.

F3: The price in column 4 is a weighted average price reported in reliance to 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 ranges from $33.50 to $33.70, inclusive. The Reporting Person understakes 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 of this footnote.

F4: The price in column 4 is a weighted average price reported in reliance to 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 ranges from $33.10 to $33.20, inclusive. The Reporting Person understakes 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 of this footnote.

F5: This option vests in four equal installments. The first three installments became exercisable on February 19, 2016, February 19, 2017 and February 19, 2018, respectively. The last installment will be come exercisable on February 19, 2019.

F6: This option was granted pursuant to the Entegris, Inc. 2010 Stock Plan, as amended, in consideration of services as an employee.

F7: This option vests in four equal installments. The first two installments became exercisable on February 19, 2017 and February 19, 2018, respectively. The remaining installments will become exercisable on February 19, 2019 and February 19, 2020, respectively.