ENTEGRIS INC — Director's Dealing 2024

May 29, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ENTEGRIS INC (ENTG)
CIK: 0001101302
Period of Report: 2024-05-23

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-05-23	Common Stock	S	3142	$133.50	Disposed	13652.218	Direct
2024-05-23	Common Stock	M	1847	$55.72	Acquired	15499.218	Direct
2024-05-23	Common Stock	S	1847	$133.50	Disposed	13652.218	Direct
2024-05-23	Common Stock	M	1772	$80.71	Acquired	15424.218	Direct
2024-05-23	Common Stock	S	1772	$133.50	Disposed	13652.218	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2024-05-23	Employee Stock Option (Right to Buy)	$55.72	M	1847	Disposed	2027-02-19	Common Stock (1847)	Direct
2024-05-23	Employee Stock Option (Right to Buy)	$80.71	M	1772	Disposed	2030-02-19	Common Stock (1772)	Direct

Footnotes

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

F2: This option is fully vested.

F3: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

F4: The option vests in four equal annual installments. The first installment became exercisable on February 19, 2024. The remaining installments will become exercisable on February 19, 2025, February 19, 2026 and February 19, 2027, respectively.