Onto Innovation (ONTO) insider trading
12 directors and officers declare holding shares of Onto Innovation (ONTO), each in their own filing with the SEC. The largest is Michael P. Plisinski (Chief Executive Officer · Director) with 179,242 shares, 0.37% of the company, worth $52.8M at the last close. The most recent move on file: David Brian Miller sold 2,000 shares at $300.00 on Sep 29, 2026. Of the 12 with a trade on file, 6 last bought and 6 last sold. Purchases and sales are as reported on Forms 3, 4 and 5 — the SEC counts private transactions too, and many large sales follow a plan arranged in advance. Holdings are never added up: two spouses often report the same shares, and a joint filing carries a fund's.
| Insider | Role | Shares | % of company | Value | Last trade on file | Filed |
|---|---|---|---|---|---|---|
| Michael P. Plisinski | Chief Executive Officer · Director | 179,242 | 0.37% | $52.8M | bought 14,479 shares on Mar 2, 2026 | Mar 3, 2026 |
| Christopher A. Seams | Director | 38,513 | 0.08% | $11.4M | bought 761 shares on May 20, 2026 | May 20, 2026 |
| Ido Dolev | EVP, Prod Solutions Grp | 26,536 | 0.05% | $7.8M | bought 3,440 shares on Mar 2, 2026 | Mar 3, 2026 |
| Yoon Ah OH | SVP, Gen Counsel & Corp Sec | 21,110 | 0.04% | $6.2M | sold 530 shares at $271.77 on May 15, 2026 | May 15, 2026 |
| Brian K. Roberts | Chief Financial Officer | 21,032 | 0.04% | $6.2M | sold 3,239 shares at $254.55 on Sep 2, 2026 | Sep 2, 2026 |
| Ramil Yaldaei | Chief Operating Officer | 17,593 | 0.04% | $5.2M | sold 843 shares at $271.77 on May 15, 2026 | May 15, 2026 |
| Shirley Chen | Senior Vice President of Custo | 14,001 | 0.03% | $4.1M | sold 1,516 shares at $254.55 on Sep 2, 2026 | Sep 2, 2026 |
| David Brian Miller | Director | 10,692 | 0.02% | $3.2M | sold 2,000 shares at $300.00 on Sep 29, 2026 | Sep 29, 2026 |
| May Su | Director | 7,984 | 0.02% | $2.4M | bought 761 shares on May 20, 2026 | May 20, 2026 |
| Stephen Douglas Kelley | Director | 6,384 | 0.01% | $1.9M | bought 761 shares on May 20, 2026 | May 20, 2026 |
| Stephen S. Schwartz | Director | 3,536 | <0.01% | $1.0M | bought 761 shares on May 20, 2026 | May 20, 2026 |
| Susan D. Lynch | Director | 2,684 | <0.01% | $791,082.16 | sold 1,000 shares at $302.30 on Aug 21, 2026 | Aug 21, 2026 |
Each insider at Onto Innovation
- Michael P. Plisinski — Chief Executive Officer · Director
- Christopher A. Seams — Director
- Ido Dolev — EVP, Prod Solutions Grp
- Yoon Ah OH — SVP, Gen Counsel & Corp Sec
- Brian K. Roberts — Chief Financial Officer
- Ramil Yaldaei — Chief Operating Officer
- Shirley Chen — Senior Vice President of Custo
- David Brian Miller — Director
- May Su — Director
- Stephen Douglas Kelley — Director
- Stephen S. Schwartz — Director
- Susan D. Lynch — Director
No longer filing
- Mark Slicer — Chief Financial Officer
- Christine A. Tsingos — Director
- Leo Berlinghieri — Director
- Srinivas Vedula — SVP Customer Success
- D. Mayson Brooks — Vice President & GM, IBU
- Robert Fiordalice — Sr. Vice President & GM, MBU
What insiders bought and sold across AI stocks · All filings on sec.gov