Trade Summary

Yesterday, Donahue Joseph B, serving as Dir at MKS INC (MKSI), sold 2,100 shares at $327.95 per share, for a total transaction value of $688,703.40. Following this transaction, Donahue Joseph B now holds 10,033 shares of MKSI.

This sale represents a 17.31% decrease in Donahue Joseph B's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Wednesday, May 27, 2026 and publicly disclosed via SEC Form 4 filing on Thursday, May 28, 2026 at 2:07 PM ET, 1 day after the trade was made.

MKS INC operates in the TECHNOLOGY sector, specifically within the SCIENTIFIC & TECHNICAL INSTRUMENTS industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.