# EDGAR Filing Document

**Accession Number:** 0001049502
**File Stem:** 0001193125-26-133426
**Filing Date:** 2026-3
**Character Count:** 1251
**Document Hash:** 71aa379612dc3f6fca229a513f0ffc08
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-133426.hdr.sgml**: 20260331

**ACCESSION NUMBER**: 0001193125-26-133426

**CONFORMED SUBMISSION TYPE**: ARS

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260331

**DATE AS OF CHANGE**: 20260331

**EFFECTIVENESS DATE**: 20260331

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MKS INC
- **CENTRAL INDEX KEY:** 0001049502
- **STANDARD INDUSTRIAL CLASSIFICATION:** INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 042277512
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** ARS
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-23621
- **FILM NUMBER:** 26817412

**BUSINESS ADDRESS:**
- **STREET 1:** 2 TECH DRIVE
- **CITY:** ANDOVER
- **STATE:** MA
- **ZIP:** 01810
- **BUSINESS PHONE:** 978-645-5500

**MAIL ADDRESS:**
- **STREET 1:** 2 TECH DRIVE
- **CITY:** ANDOVER
- **STATE:** MA
- **ZIP:** 01810

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MKS INSTRUMENTS INC
- **DATE OF NAME CHANGE:** 19971112

### Attached PDF Documents

**Attachment 1:** `d101621dars.pdf`

_No text found in this document._