Mayampurath Ramakumar 4

What Happened

• Mayampurath Ramakumar, EVP & Chief Financial Officer of MKS Inc (MKSI), was granted 8,877.596 restricted stock units (RSUs) on February 8, 2026. The grant is reported as a derivative award (transaction code A) and no cash price or immediate shares issued were reported.

Key Details

• Transaction date: February 8, 2026; Form 4 filed February 9, 2026 (appears timely).
• Security: 8,877.596 RSUs (each RSU = right to one share upon delivery).
• Price/Value: N/A on the Form 4 (compensation award, not an open‑market trade).
• Vesting: RSUs were subject to performance criteria (achievement determined Feb 8, 2026) and will vest in three equal annual installments beginning Feb 15, 2026 (if Feb 15 is not a business day, vesting occurs the next business day). (See footnotes F1–F2.)
• Shares owned after transaction: Not disclosed in the provided filing.
• Filing timeliness: Form filed one day after the award date; not indicated as late.

Context

• This was a compensation grant (performance‑based RSUs), not a purchase or sale — such awards are routine elements of executive pay and do not directly signal immediate buying or selling activity. Upon vesting and settlement the RSUs convert into common shares (one share per RSU) according to the stated schedule and conditions.