ENTEGRIS INC — Director's Dealing 2026

Feb 4, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ENTEGRIS INC (ENTG)
CIK: 0001101302
Period of Report: 2026-02-02

Reporting Person: LOY BERTRAND (Director, Executive Chair)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-02	Common Stock	M	65250	$55.72	Acquired	371672	Direct
2026-02-02	Common Stock	S	200	$115.96	Disposed	371472	Direct
2026-02-02	Common Stock	S	2412	$117.19	Disposed	369060	Direct
2026-02-02	Common Stock	S	9292	$118.43	Disposed	359768	Direct
2026-02-02	Common Stock	S	16424	$119.13	Disposed	343344	Direct
2026-02-02	Common Stock	S	34522	$120.25	Disposed	308822	Direct
2026-02-02	Common Stock	S	2400	$120.91	Disposed	306422	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-02	Employee Stock Option (Right to Buy)	$55.72	M	65250	Disposed	2027-02-19	Common Stock (65250)	Direct

Footnotes

F1: This amount reflects an additional 602 shares to correct an error in the number of shares initially withheld to satisfy tax obligations in connection with the award of shares reported on the Reporting Person's Form 4 filed on February 24, 2025.

F2: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 10, 2025.

F3: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $115.50 to $116.42, 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.

F4: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $116.60 to $117.58, 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.

F5: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $117.67 to $118.66, 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.

F6: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $118.68 to $119.66, 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.

F7: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $119.73 to $120.72, 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.

F8: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $120.73 to $121.21, 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.

F9: This option is fully vested.

F10: Awarded pursuant to the Entegris, Inc. 2010 Stock Plan in consideration of services as an employee.