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Insider selling
John Edward Williams sold $132K of Mks Inc (MKSI) stock
John Edward Williams, EVP & Gm, Psd of Mks Inc (MKSI), sold 457 shares of MKSI stock worth $132K, per an SEC Form 4 filed Aug 4, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on Aug 3, 2026, 1 day before it was made public.
MKSI has moved -17.1% since the trade date, from $309.98 to $256.92 (Sep 21, 2026 close).
- Traded
- Aug 3, 2026
- Disclosed
- Aug 4, 2026
- Filing delay
- 1 day
- Price since
- -17.1%
- Role
- EVP & Gm, Psd
- Source
- SEC Form 4
More MKSI insider and Congress trades
From a public SEC Form 4, linked above. Not investment advice, and not a recommendation to buy or sell.