Henry David Philip sold MKSI
June 1, 2026 · Form 4 insider transaction
Henry David Philip sold 6,000 shares of MKS Inc. at $314.43 per share, a transaction worth $1.89M. The trade was recorded as open-market sale and disclosed on an SEC Form 4, filed 1 day after the transaction.
Direction
Disposed (sell-side)
Shares
6,000
Price
$314.43
Total value
$1.89M
InsiderHenry David Philip
Role—
CompanyMKS Inc. (MKSI)
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateJune 1, 2026
Filing dateJune 2, 2026
Shares owned after10,422
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
This transaction was executed in multiple trades at prices ranging from $314.2425 to $314.955. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, the full information regarding the number of shares and prices at which the transaction was effected.