AI brief of an SEC Form 8-K · MKS Instruments (MKSI)

MKS raises Q4 2025 revenue guidance to about $1.03 billion ahead of lender meeting

Positive Impact 4 of 5 guidance Written later

MKS said on January 21, 2026 that it now expects fourth-quarter 2025 revenue of about $1,030 million, a $40 million increase at the midpoint of prior guidance, citing increased demand across all markets and divisions. The company also outlined a proposed refinancing of its term loans and revolving credit facility, to be discussed with lenders on January 22, 2026, which it says is expected to be leverage neutral and reduce interest expense; the company states there is no assurance the transactions will close.

Key points

  • Q4 2025 revenue expected at about $1,030 million, plus or minus $5 million, up $40 million at the guidance midpoint
  • GAAP net income expected at $106 million, plus or minus $3 million; Adjusted EBITDA expected at $248 million, plus or minus $2 million
  • Gross margin and per-share earnings expected to exceed the midpoint of prior guidance; GAAP operating expenses expected slightly above the prior range
  • Proposed refinancing would replace a $2.2 billion term loan with a new term loan of about $0.9 billion due 2033 and upsize the $675 million revolver to $1 billion

The filing

CompanyMKS Instruments (MKSI)
Form8-K, current report
Filed with the SECJan 21, 2026, 10:30 AM ET
Accession number0001193125-26-017468

Items reported: 2.02 Results of Operations7.01 Regulation FD Disclosure

Read the filing on SEC.gov ↗

Written by AI on Nov 8, 2026, 1:12 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on January 21, 2026.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.