JABRE WISSAM G 4

What Happened Jabre Wissam G, a director of MKS Inc (MKSI), was granted 781.959 restricted stock units (RSUs) on May 11, 2026. The filing lists the transaction as an award/grant (code A); no purchase price or immediate share transfer is reported because these are RSUs (contingent rights to receive common stock).

Key Details

• Transaction date: 2026-05-11; Form 4 filed: 2026-05-12 (timely).
• Award: 781.959 restricted stock units (RSUs). Price/consideration: N/A (award).
• Vesting: RSUs become fully vested the day before the first annual shareholders meeting after the grant, or on the 13-month anniversary if no meeting is held within 13 months (footnote).
• Each RSU equals the contingent right to one share of MKS common stock (footnote).
• Shares owned after the transaction: not reported in the filing.

Context This is an equity compensation grant (not a market purchase or sale). RSU awards are common for directors and typically vest over time or on a specified corporate event; they do not represent immediately tradable shares until vested and settled. There is no indication of a sale, exercise, or tax withholding in this filing.