David Philip Henry

David Philip Henry: EVP, Global Str Mktg & GM, MSD at MKS. What David Philip Henry holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.

MKS (MKSI)

David Philip Henry holds 10,422 MKS shares (0.02% of the company), worth about $2.7M at the last price, according to the Form 4 of Jun 1, 2026.

• Shares held: 10,422 (0.02%), $2.7M — Held in their own name.
• Share units: 12,093 (0.02%), $3.1M — MKS promised them as pay: each unit becomes a share when it vests, if its conditions are met. No vote until then.

Declarations

• MKS (MKSI) — Form 4 of Jun 1, 2026 (EVP, Global Str Mktg & GM, MSD): open-market sale of 6,000 at $314.43; 10,422 shares after 0001049502-26-000100
• MKS (MKSI) — Form 4 of May 26, 2026 (EVP, Global Str Mktg & GM, MSD): open-market sale of 2,500 at $330.50; 16,341 shares after 0001049502-26-000092
• MKS (MKSI) — Form 4 of Feb 20, 2026 (EVP, Global Str Mktg & GM, MSD): open-market sale of 2,000 at $261.56; 18,841 shares after 0001049502-26-000040
• MKS (MKSI) — Form 4 of Feb 17, 2026 (EVP, Global Str Mktg & GM, MSD): option exercise or conversion of 2,406; option exercise or conversion of 1,247; 20,841 shares after 0001049502-26-000026
• MKS (MKSI) — Form 4 of Feb 8, 2026 (EVP, Global Str Mktg & GM, MSD) 0001049502-26-000012
• MKS (MKSI) — Form 4 of Sep 18, 2025 (EVP, Global Str Mktg & GM, MSD): open-market sale of 5,000 at $130.00; 15,571 shares after 0001049502-25-000027
• MKS (MKSI) — Form 4 of Jul 3, 2025 (EVP, Operations & Corp Mktg): open-market sale of 2,000 at $105.00; 20,571 shares after 0001127602-25-018975
• MKS (MKSI) — Form 4 of Feb 18, 2025 (EVP, Operations & Corp Mktg): option exercise or conversion of 1,528; option exercise or conversion of 1,099; 22,419 shares after 0001127602-25-005635
• MKS (MKSI) — Form 4 of Feb 10, 2025 (EVP, Operations & Corp Mktg) 0001127602-25-004219

Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.

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