---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-072053"
form_type: "8-K"
ticker: "MKSI"
cik: "0001049502"
company_name: "MKS INC"
filed_at: "2025-05-15T23:59:59+00:00"
generated_at: "2026-05-21T04:23:21.655997+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# MKS Instruments appoints James Schreiner as COO, shareholders approve name change to MKS Inc.

## Summary
- James Schreiner named EVP & COO effective Aug 1, 2025; salary raised to $600k from $510k.
- David Henry appointed EVP, Global Strategic Marketing and GM, Materials Solutions Div.
- Shareholders approved name change to MKS Inc. effective May 16, 2025; ticker remains MKSI.
- Shareholders also approved lowering supermajority voting requirements to simple majority.
- Directors Lee and Moloney re-elected; name change approved with 99.9% of votes cast.

## SEC filing metadata
- accession: 0000950170-25-072053
- form_type: 8-K
- ticker: MKSI
- cik: 0001049502
- company_name: MKS INC
- filed_at: 2025-05-15T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 3.03, 5.03, 5.02, 5.07, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1049502/000095017025072053/0000950170-25-072053-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1049502/000095017025072053/mksi-20250512.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-072053
- JSON: https://secwatch.observer/filing/0000950170-25-072053.json
- Plain text: https://secwatch.observer/filing/0000950170-25-072053.txt

## Key facts
- Executive change
  David P. Henry was appointed as Executive Vice President, Global Strategic Marketing and General Manager, Materials Solutions Division at MKS INC.
  - Action: appointed
  - Role: Executive Vice President, Global Strategic Marketing and General Manager, Materials Solutions Division
  source text: appointed David P. Henry, who currently serves as Executive Vice President, Operations and Corporate Marketing, to serve as Executive Vice President, Global Strategic Marketing and General Manager, Materials Solutions Division, effective as of August 1, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1049502/000095017025072053/0000950170-25-072053-index.htm
- Executive change
  James A. Schreiner was appointed as Executive Vice President and Chief Operating Officer at MKS INC.
  - Action: appointed
  - Role: Executive Vice President and Chief Operating Officer
  source text: appointed James A. Schreiner, age 63, who currently serves as Executive Vice President and Chief Operating Officer, Materials Solutions Division, to serve as Executive Vice President and Chief Operating Officer, effective as of August 1, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1049502/000095017025072053/0000950170-25-072053-index.htm
- Governance Changes
  MKS INC: Amendments to lower supermajority voting to simple majority and change company name to MKS Inc., filed with Secretary of Commonwealth of Massachusetts on May 16, 2025 (effective 2025-05-16).
  - Change: charter amendment
  - Effective: 2025-05-16
  source text: Following shareholder approval of the Articles Amendments proposals, the Company filed the Restated Articles of Organization with the Secretary of the Commonwealth of the Commonwealth of Massachusetts to effect the Articles Amendments on May 16, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1049502/000095017025072053/0000950170-25-072053-index.htm
- Governance Changes
  MKS INC: Administrative amendment to reflect company name change to MKS Inc., effective May 16, 2025 (effective 2025-05-16).
  - Change: bylaw amendment
  - Effective: 2025-05-16
  source text: In connection with the change to the Company’s name to MKS Inc., the Board approved an additional administrative amendment to the By-Laws to reflect the name change (the “By-Laws Name Change Amendment” and, together with the By-Laws Supermajority Amendment, the “By-Laws Amendments”) effective as of May 16, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1049502/000095017025072053/0000950170-25-072053-index.htm
- Governance Changes
  MKS INC: Amendment to lower voting requirement to amend by-laws from supermajority to simple majority, effective immediately upon shareholder approval on May 12, 2025 (effective 2025-05-12).
  - Change: bylaw amendment
  - Effective: 2025-05-12
  source text: At the 2025 Annual Meeting, shareholders of the Company approved an amendment to the Company’s Second Amended and Restated By-Laws (the “By-Laws”) to lower the voting requirement to amend the By-Laws from a supermajority to a simple majority voting standard (the “By-Laws Supermajority Amendment”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1049502/000095017025072053/0000950170-25-072053-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.