Olivier Blachier - 14 May 2026 Form 4 Insider Report for ENTEGRIS INC (ENTG)

Reporting relationship: SVP, Chief Strategy Officer
Issuer ticker: ENTG
Reported as of: 14 May 2026
Net transaction value: -$280,080
SEC form: 4
Accepted by SEC: 18 May 2026, 14:11:52 UTC
Prior SEC filing: 08 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Joseph Colella, Attorney-In-Fact for Olivier Blachier

Key filing fact

Olivier Blachier filed Form 4 for ENTEGRIS INC (ENTG) on 18 May 2026.

Key facts

This page summarizes Olivier Blachier's Form 4 filing for ENTEGRIS INC (ENTG).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 18 May 2026, 14:11.

Change

Previous filing in this sequence was filed on 08 Apr 2026.
Current net transaction value: -$280,080.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001891661 Primary reporting owner

Blachier Olivier

Relationship: SVP, Chief Strategy Officer
Address: C/O ENTEGRIS, INC., 129 CONCORD ROAD, BILLERICA
Signature: /s/ Joseph Colella, Attorney-In-Fact for Olivier Blachier
Signature date: 18 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ENTG transaction

Common Stock

Options Exercise

Transaction value
Shares: +2,000
Change %: +5.7%
Price: $80.71^*
Shares after: 36,897
Date: 14 May 2026
Ownership: Direct

ENTG transaction

Common Stock

Sale

Transaction value: $280,080
Shares: -2,000
Change %: -5.4%
Price: $140.04
Shares after: 34,897
Date: 14 May 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ENTG transaction Derivative

Employee Stock Option (Right to Buy)

Options Exercise

Transaction value
Shares: -2,000
Change %: -25%
Price: $0.000000^*
Shares after: 5,972
Date: 14 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,000
Exercise price: $80.71
Footnotes: F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $140.00 to $140.18, 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.

Footnote F2

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

Footnote F3

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