ENTEGRIS INC — Director's Dealing 2023

May 15, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ENTEGRIS INC (ENTG)
CIK: 0001101302
Period of Report: 2023-05-11

Reporting Person: O'Neill James Anthony (SVP & CTO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-05-11	Common Stock	S	2998	$90.72	Disposed	15588.218	Direct
2023-05-11	Common Stock	M	1847	$55.72	Acquired	17435.218	Direct
2023-05-11	Common Stock	S	1847	$90.72	Disposed	15588.218	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-05-11	Employee Stock Option (Right to Buy)	$55.72	M	1847	Disposed	2027-02-19	Common Stock (1847)	Direct

Footnotes

F1: These shares were sold pursuant to a Rule 10b-5 Trading Plan previously established by the Reporting Person on February 23, 2023.

F2: The option vests in four equal annual installments. The first three installments became exercisable on February 19, 2021, February 19, 2022 and February 19, 2023, respectively. The remaining installment will become exercisable on February 19, 2024.