---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-23-004673"
form_type: "8-K"
ticker: "MKSI"
cik: "0001049502"
company_name: "MKS INC"
filed_at: "2023-02-27T23:59:59+00:00"
generated_at: "2026-06-18T23:11:42.259825+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# MKS Instruments Q4 revenue $1.09B beats guidance; ransomware to cut Q1 revenue by at least $200M

## Summary
- Q4 revenue $1.09B (record, +42% YoY), GAAP EPS $0.81, non-GAAP EPS $2.00, all above guidance.
- Full-year 2022 revenue $3.55B (+20% YoY).
- Ransomware incident identified Feb 3, 2023; expects material Q1 impact, no guidance provided.
- Prior to ransomware, Q1 revenue expected ~$1B; now estimates at least $200M revenue impact.
- Company filing Form 12b-25 for late 10-K due to ransomware.

## SEC filing metadata
- accession: 0000950170-23-004673
- form_type: 8-K
- ticker: MKSI
- cik: 0001049502
- company_name: MKS INC
- filed_at: 2023-02-27T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1049502/000095017023004673/0000950170-23-004673-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1049502/000095017023004673/mksi-20230227.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-004673
- JSON: https://secwatch.observer/filing/0000950170-23-004673.json
- Plain text: https://secwatch.observer/filing/0000950170-23-004673.txt

## Key facts
- Earnings Releases
  MKS INC reported the full year ended December 31, 2022 results: revenue $3.55 billion.
  - Period: the full year ended December 31, 2022
  - Revenue: $3.55 billion
  - Result: reported results
  source text: Record annual revenue of $3.55 billion, up 20% year-over-year
  evidence_url: https://www.sec.gov/Archives/edgar/data/1049502/000095017023004673/0000950170-23-004673-index.htm
- Earnings Releases
  MKS INC reported the quarter ended December 31, 2022 results: revenue $1.09 billion, net income $54 million, EPS $0.81 per diluted share.
  - Period: the quarter ended December 31, 2022
  - Revenue: $1.09 billion
  - Net income: $54 million
  - EPS: $0.81 per diluted share
  - Result: reported results
  source text: Record quarterly revenue of $1.09 billion, up 42% year-over-year, exceeding the high-end of guidance • Quarterly GAAP net income per diluted share of $0.81 and quarterly Non-GAAP net earnings per diluted share of $2.00, exceeding the high-end of guidance • Quarterly GAAP net income of $54 million and quarterly Adjusted EBITDA of $282 million, exceeding the high-end of guidance • Quarterly operating cash flow of $184 million and free cash flow of $130 million
  evidence_url: https://www.sec.gov/Archives/edgar/data/1049502/000095017023004673/0000950170-23-004673-index.htm

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