Yoon Ah OH

Yoon Ah OH: SVP, Gen Counsel & Corp Sec at Onto Innovation. What Yoon Ah OH 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.

Onto Innovation (ONTO)

Yoon Ah OH holds 21,110 Onto Innovation shares (0.04% of the company), worth about $6.0M at the last price, according to the Form 4 of May 15, 2026.

• Shares held: 21,110 (0.04%), $6.0M — Held in their own name.
• Share units: 1,471 (0.00%), $417,293.28 — Onto Innovation promised them as pay: each unit becomes a share when it vests, if its conditions are met. No vote until then.
• Share units: 1,470 (0.00%), $417,009.60 — Onto Innovation promised them as pay: each unit becomes a share when it vests, if its conditions are met. No vote until then.
• Share units: 1,204 (0.00%), $341,550.72 — Onto Innovation promised them as pay: each unit becomes a share when it vests, if its conditions are met. No vote until then.
• Share units: 1,204 (0.00%), $341,550.72 — Onto Innovation promised them as pay: each unit becomes a share when it vests, if its conditions are met. No vote until then.

Declarations

• Onto Innovation (ONTO) — Form 4 of May 15, 2026 (SVP, Gen Counsel & Corp Sec): shares withheld for tax of 530 at $271.77; 21,110 shares after 0001889970-26-000008
• Onto Innovation (ONTO) — Form 4 of Mar 3, 2026 (SVP, Gen Counsel & Corp Sec): grant or award of 2,408; shares withheld for tax of 417 at $207.50; 21,640 shares after 0001889970-26-000006
• Onto Innovation (ONTO) — Form 4 of Mar 1, 2026 (SVP, Gen Counsel & Corp Sec): option exercise or conversion of 724; shares withheld for tax of 307 at $215.89; 19,649 shares after 0001889970-26-000004
• Onto Innovation (ONTO) — Form 4 of Feb 14, 2026 (SVP, Gen Counsel & Corp Sec): option exercise or conversion of 3,084; shares withheld for tax of 1,094 at $217.23; 19,499 shares after 0001889970-26-000002
• Onto Innovation (ONTO) — Form 4 of May 15, 2025 (SVP, Gen Counsel & Corp Sec): shares withheld for tax of 603 at $98.04; 18,010 shares after 0002022859-25-000049
• Onto Innovation (ONTO) — Form 4 of Mar 3, 2025 (SVP, Gen Counsel & Corp Sec): grant or award of 2,941; 18,613 shares after 0002022859-25-000040
• Onto Innovation (ONTO) — Form 4 of Mar 1, 2025 (SVP, Gen Counsel & Corp Sec): shares withheld for tax of 304 at $145.66; 15,672 shares after 0002022859-25-000030
• Onto Innovation (ONTO) — Form 4 of Feb 14, 2025 (VP, General Counsel & Corp Sec): option exercise or conversion of 3,956; shares withheld for tax of 1,830 at $176.55; 15,976 shares after 0002022859-25-000024
• Onto Innovation (ONTO) — Form 4 of Feb 10, 2025 (VP, General Counsel & Corp Sec): shares withheld for tax of 375 at $183.28; shares withheld for tax of 1,016 at $183.28; 14,343 shares after 0002022859-25-000013
• Onto Innovation (ONTO) — Form 4 of Oct 25, 2024 (General Counsel): shares withheld for tax of 1,296 at $204.39; 13,014 shares after 0002022859-24-000038

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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