# EDGAR Filing Document

**Accession Number:** 0001101302
**File Stem:** 0001101302-26-000056
**Filing Date:** 2026-3
**Character Count:** 2008
**Document Hash:** 132e2a5c4ac7af05eb405e4647e60294
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001101302-26-000056.hdr.sgml**: 20260323

**ACCESSION NUMBER**: 0001101302-26-000056

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260323

**DATE AS OF CHANGE**: 20260323

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ENTEGRIS INC
- **CENTRAL INDEX KEY:** 0001101302
- **STANDARD INDUSTRIAL CLASSIFICATION:** PLASTICS PRODUCTS, NEC [3089]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 411941551
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-32598
- **FILM NUMBER:** 26783056

**BUSINESS ADDRESS:**
- **STREET 1:** 129 CONCORD ROAD
- **CITY:** BILLERICA
- **STATE:** MA
- **ZIP:** 01821
- **BUSINESS PHONE:** 9784366500

**MAIL ADDRESS:**
- **STREET 1:** 129 CONCORD ROAD
- **CITY:** BILLERICA
- **STATE:** MA
- **ZIP:** 01821

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549**

**SCHEDULE 14A** 

**Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934**

**(Amendment No. __)**

 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐

 Check the appropriate box:

☐ Preliminary Proxy Statement

☐ **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))**

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material under § 240.14a-12

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| |
|:---|
| **Entegris, Inc.**  |
| **(Name of Registrant as Specified In Its Charter)**  |
| **(Name of Person(s) Filing Proxy Statement, if other than the Registrant)** |

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 Payment of Filing Fee (Check the appropriate box):

☒ No fee required

☐ Fee paid previously with preliminary materials

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1)

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![entg_notice2.jpg](entg_notice2.jpg)

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