Form 4: Mks Instruments Executive Sells Shares
Insider Transaction (Form 4)
John Edward Williams, EVP & GM, PSD of Mks Instruments Inc, sold 457 shares of common stock on August 3, 2026 for $288.31 per share.
Summary
- Open-market sale: disposed of 457 Common Stock at $288.31 ($131,758) on August 3, 2026; holds 4,098 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $131,758 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
John Edward Williams — Officer (EVP & GM, PSD)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-03 | Open-market sale | Common Stock | 457 | $288 | $131.8K | 4,097.844 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-03 | Open-market sale (457 shares) |
Keywords
insider transaction, Form 4, MKSI, MKS INC, bearish, John Edward Williams
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