McCarthy Michelle M 4

What Happened

Michelle M. McCarthy, Vice President and Chief Accounting Officer of MKS Inc. (MKSI), sold a total of 1,466 shares in open-market transactions on February 20, 2026. The sales were executed as two grouped transactions: 650 shares at a weighted-average price of $249.57 (proceeds $162,219) and 816 shares at a weighted-average price of $250.35 (proceeds $204,284), totaling approximately $366,503. These were sales (not purchases), which insiders often undertake for routine reasons such as diversification or liquidity rather than as a direct signal about company prospects.

Key Details

• Transaction date: February 20, 2026 (reported on Form 4 filed Feb 23, 2026)
• Sale details:
  • 650 shares sold at $249.57 (weighted-average) — $162,219
  • 816 shares sold at $250.35 (weighted-average) — $204,284
  • Total shares sold: 1,466; total proceeds: ~$366,503
• Footnotes:
  • F1: The 650-share sale was executed in multiple trades at prices from $249.070 to $250.030; the reported price is the weighted average. Full trade-level details available on request.
  • F2: The 816-share sale was executed in multiple trades at prices from $250.160 to $250.790; the reported price is the weighted average. Full trade-level details available on request.
• Shares owned after transaction: Not disclosed in the provided filing excerpt.
• Filing timeliness: Form 4 was filed Feb 23, 2026, three days after the Feb 20 transaction; investors should note the two-business-day SEC reporting rule and check the official filing for any timeliness notes.

Context

• These were open-market sales (code S on Form 4); no option exercises, awards, or gifts were reported in this filing.
• No 10b5-1 trading plan or tax-withholding indication is shown in the excerpt—footnotes only describe multiple-trade execution and weighted-average pricing.
• Sales by corporate officers are common and can reflect personal financial planning; they are factual disclosures rather than explicit endorsements or warnings about company performance.