Onto Innovation Inc.
A maker of metrology and inspection systems that help semiconductor factories spot defects on chips as they're being made, using tools like the Dragonfly G3 and JetStep X500. It was born in 2019 from the merger of Rudolph Technologies and Nanometrics, two longtime players in chip measurement. The name is a pun: its instruments are literally placed "onto" wafer-processing machines to measure them mid-production.
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| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Plisinski Michael PChief Executive Officer, Director · 36 transactions | -34.4% | 179.2K | 159.3K | — | 125.0K |
| Tsingos Christine ADirector · 1 transaction | +1.9% | 42.9Kas of May 2024 | 809 | — | — |
| Seams Christopher ADirector · 3 transactions | +10.6% | 38.5K | 3.7K | — | — |
| Dolev IdoEVP, Prod Solutions Grp · 5 transactions | — | 26.5K | 30.4K | — | — |
| Roberts Brian KChief Financial Officer · 2 transactions | — | 24.3K | 24.3K | — | — |
| OH Yoon AhSVP, Gen Counsel & Corp Sec · 27 transactions | +21.6% | 21.1K | 20.4K | — | 4.4K |
| Berlinghieri LeoDirector · 1 transaction | +4.2% | 20.2Kas of May 2024 | 809 | — | — |
| Vedula SrinivasSVP, Customer Success · 20 transactions | -3.7% | 18.7Kas of Mar 2025 | 9.7K | — | 5.3K |
| Yaldaei RamilChief Operating Officer · 17 transactions | +398.6% | 18.2K | 13.8K | — | — |
| Chen ShirleySVP Customer Success · 2 transactions | — | 15.5K | 15.5K | — | — |
| Slicer MarkChief Financial Officer · 16 transactions | -15.4% | 13.6Kas of May 2025 | 9.6K | — | 5.1K |
| Miller David BrianDirector · 4 transactions | +7.5% | 12.7K | 3.7K | — | 2.8K |
| Fiordalice RobertSVP & GM, Metrology BU · 11 transactions | -35.2% | 8.8Kas of Mar 2024 | 3.9K | — | 7.0K |
| Su MayDirector · 3 transactions | +85.7% | 8.0K | 3.7K | — | — |
| Kelley Stephen DouglasDirector · 3 transactions | +136.4% | 6.4K | 3.7K | — | — |
| Lynch Susan DDirector · 3 transactions | — | 3.7K | 3.7K | — | — |
| Schwartz Stephen SDirector · 3 transactions | — | 3.5K | 3.5K | — | — |
| Brooks D MaysonVice President & GM, IBU · 3 transactions | — | 3.0Kas of Sep 2024 | 3.1K | — | — |
Select a row to see that insider’s individual transactions.
Net open-market activity over the last 3 years: -149.7K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.