Insider Trading
Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.
| Ticker | Insider | Title | Date | Transaction | Price ($) | Shares | Value ($) | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| MKSI | Mora Elizabeth | Director | 09/01/2026 | Verkauf | 250.96 | 300 | 75,288 | Form 4 |
| MKSI | Lee John Tseng-Chung | President & CEO | 08/14/2026 | Verkauf | 302.01 | 10,000 | 3,020,100 | Form 4 |
| MKSI | Williams John Edward | EVP & GM, PSD | 08/03/2026 | Verkauf | 288.31 | 457 | 131,758 | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).