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| Date | Name | Title | Action | No Shares | Price Per Share |
|---|---|---|---|---|---|
Insider Transactions For ONTO | |||||
| 2025-12-24 | Plisinski, Michael P | Director, Chief Executive Officer | Sold | 25000 | $0.00 |
| 2025-12-02 | Dolev, Ido | EVP, Prod Solutions Grp | Sold | 3183 | $154.01 |
| 2025-10-03 | Yaldaei, Ramil | Chief Operating Officer | Sold | 594 | $143.71 |
| 2025-09-02 | Chen, Shirley | SVP, Customer Success | Purchased | 12994 | $0.00 |
| 2025-09-02 | Roberts, Brian K | Chief Financial Officer | Purchased | 21175 | $0.00 |
| 2025-06-02 | Dolev, Ido | EVP, Prod Solutions Grp | Purchased | 21562 | $0.00 |
| 2025-06-02 | Dolev, Ido | EVP, Prod Solutions Grp | Purchased | 5391 | $0.00 |
| 2025-06-02 | Dolev, Ido | EVP, Prod Solutions Grp | Purchased | 2695 | $0.00 |
| 2025-05-21 | Seams, Christopher A | Director | Purchased | 2114 | $0.00 |
| 2025-05-21 | Kelley, Stephen Douglas | Director | Purchased | 2114 | $0.00 |
| 2025-05-21 | Lynch, Susan D | Director | Purchased | 2114 | $0.00 |
| 2025-05-21 | Miller, David Brian | Director | Purchased | 2114 | $0.00 |
| 2025-05-21 | Su, May | Director | Purchased | 2114 | $0.00 |
| 2025-05-21 | Schwartz, Stephen S | Director | Purchased | 2114 | $0.00 |
| 2025-05-17 | Slicer, Mark | Chief Financial Officer | Sold | 2066 | $99.40 |
| 2025-05-15 | Yaldaei, Ramil | Chief Operating Officer | Sold | 217 | $98.04 |
| 2025-05-15 | Oh, Yoon Ah | SVP, Gen Counsel & Corp Sec | Sold | 603 | $98.04 |
| 2025-05-15 | Yaldaei, Ramil | Chief Operating Officer | Sold | 609 | $98.04 |
| 2025-03-03 | Vedula, Srinivas | SVP, Customer Success | Purchased | 1287 | $0.00 |
| 2025-03-03 | Vedula, Srinivas | SVP, Customer Success | Purchased | 1286 | $0.00 |
