Onto Innovation's top three insider shareholders as of June 06, 2026 are Michael P Plisinski (Chief Executive Officer, 179.24K shares), Christopher A Seams (Director, 37.75K shares), Rollin Kocher (Svp, Sales And Marketing, 33.90K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Steven R Roth | Sr Vp Cfo | 23,043 | 0 | 13 Feb, 2022 |
| D Mayson Brooks | Vice President Gm, Ibu | 3,025 | 0 | 04 Sep, 2024 |
| Leo Berlinghieri | - | 20,210 | 0 | 23 May, 2024 |
| Christopher A Seams | - | 37,752 | 0 | 23 May, 2025 |
| David Brian Miller | - | 11,931 | 0 | 23 May, 2025 |
| Michael P Plisinski | Chief Executive Officer | 179,242 | 0 | 04 Mar, 2026 |
| Bruce C Rhine | - | 3,500 | 0 | 17 Feb, 2022 |
| Stephen Douglas Kelley | - | 5,623 | 0 | 23 May, 2025 |
| Rollin Kocher | Svp, Sales And Marketing | 33,896 | 0 | 08 Sep, 2021 |
| Ju Jin | Svp Gm, Ibu | 10,254 | 0 | 16 Jun, 2023 |
| Susan D Lynch | - | 2,923 | 0 | 23 May, 2025 |
| Srinivas Vedula | Svp, Customer Success | 18,730 | 0 | 05 Mar, 2025 |
| Robert Fiordalice | Svp Gm, Metrology Bu | 8,763 | 0 | 05 Mar, 2024 |
| James Harlow | Chief Operating Officer | 8,586 | 0 | 15 Feb, 2023 |
| Yoon Ah Oh | Svp, Gen Counsel Corp Sec | 21,640 | 0 | 04 Mar, 2026 |
| May Su | - | 7,223 | 0 | 23 May, 2025 |
| Mark Slicer | Chief Financial Officer | 13,640 | 0 | 19 May, 2025 |
| Ramil Yaldaei | Chief Operating Officer | 18,436 | 0 | 04 Mar, 2026 |
| Ido Dolev | Evp, Prod Solutions Grp | 26,536 | 0 | 04 Mar, 2026 |
| Shirley Chen | Svp Customer Success | 15,517 | 0 | 04 Mar, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 02 Mar, 2026 | Shirley Chen | Common Stock | A | 2,523 | $0.00 | 15,517 | D | A |
| 02 Mar, 2026 | Ido Dolev | Common Stock | A | 3,440 | $0.00 | 27,355 | D | A |
| 02 Mar, 2026 | Ramil Yaldaei | Common Stock | A | 7,683 | $0.00 | 19,051 | D | A |
| 02 Mar, 2026 | Ramil Yaldaei | Common Stock | A | 7,683 | $0.00 | 19,051 | D | A |
| 02 Mar, 2026 | Michael P Plisinski | Common Stock | A | 14,479 | $0.00 | 182,984 | D | A |
| 02 Mar, 2026 | Yoon Ah Oh | Common Stock | A | 2,408 | $0.00 | 22,057 | D | A |
| 03 Mar, 2026 | Ramil Yaldaei | Common Stock | D | 615 | $207.50 | 18,436 | D | F |
| 03 Mar, 2026 | Yoon Ah Oh | Common Stock | D | 417 | $207.50 | 21,640 | D | F |
| 03 Mar, 2026 | Michael P Plisinski | Common Stock | D | 3,742 | $207.50 | 179,242 | D | F |
| 03 Mar, 2026 | Ido Dolev | Common Stock | D | 819 | $207.50 | 26,536 | D | F |
| 03 Mar, 2026 | Ramil Yaldaei | Common Stock | D | 615 | $207.50 | 18,436 | D | F |
| 02 Mar, 2026 | Shirley Chen | Performance Stock Unit | A | 1,261 | $0.00 | 1,261 | D | A |
| 02 Mar, 2026 | Ido Dolev | Performance Stock Unit | A | 1,720 | $0.00 | 1,720 | D | A |
| 02 Mar, 2026 | Shirley Chen | Performance Stock Unit | A | 1,261 | $0.00 | 1,261 | D | A |
| 02 Mar, 2026 | Ramil Yaldaei | Performance Stock Unit | A | 1,548 | $0.00 | 1,548 | D | A |
| 02 Mar, 2026 | Michael P Plisinski | Performance Stock Unit | A | 7,239 | $0.00 | 7,239 | D | A |
| 02 Mar, 2026 | Yoon Ah Oh | Performance Stock Unit | A | 1,204 | $0.00 | 1,204 | D | A |
| 02 Mar, 2026 | Ramil Yaldaei | Performance Stock Unit | A | 1,548 | $0.00 | 1,548 | D | A |
| 02 Mar, 2026 | Yoon Ah Oh | Performance Stock Unit | A | 1,204 | $0.00 | 1,204 | D | A |
| 02 Mar, 2026 | Ramil Yaldaei | Performance Stock Unit | A | 1,548 | $0.00 | 1,548 | D | A |