Peter Cannone III

Peter Cannone III: Director at MKS. What Peter Cannone III 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)

Peter Cannone III holds 7,794 MKS shares (0.01% of the company), worth about $2.0M at the last price, according to the Form 4 of May 18, 2026.

• Shares held: 7,794 (0.01%), $2.0M — Held in their own name.

Declarations

• MKS (MKSI) — Form 4 of May 18, 2026: open-market sale of 1,350 at $303.40; 7,794 shares after 0001049502-26-000086
• MKS (MKSI) — Form 4 of May 11, 2026: grant or award of 782; 9,144 shares after 0001049502-26-000068
• MKS (MKSI) — Form 4 of Feb 20, 2026: open-market sale of 1,250 at $258.06; 8,362 shares after 0001049502-26-000045
• MKS (MKSI) — Form 4 of May 12, 2025: grant or award of 2,479; 9,612 shares after 0001127602-25-014092

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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