Onto Innovation's top three insider shareholders as of April 25, 2026 are Michael P Plisinski (Chief Executive Officer, 179.24K shares), Rollin Kocher (Svp, Sales And Marketing, 33.90K shares), Ido Dolev (Evp, Prod Solutions Grp, 26.54K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Michael P Plisinski | Chief Executive Officer | 179,242 | 0 | 04 Mar, 2026 |
| Rollin Kocher | Svp, Sales And Marketing | 33,896 | 0 | 08 Sep, 2021 |
| Ido Dolev | Evp, Prod Solutions Grp | 26,536 | 0 | 04 Mar, 2026 |
| Steven R Roth | Sr Vp Cfo | 23,043 | 0 | 13 Feb, 2022 |
| Yoon Ah Oh | Svp, Gen Counsel Corp Sec | 21,640 | 0 | 04 Mar, 2026 |
| Leo Berlinghieri | - | 20,210 | 0 | 23 May, 2024 |
| Srinivas Vedula | Svp, Customer Success | 18,730 | 0 | 05 Mar, 2025 |
| Ramil Yaldaei | Chief Operating Officer | 18,436 | 0 | 04 Mar, 2026 |
| Shirley Chen | Svp Customer Success | 15,517 | 0 | 04 Mar, 2026 |
| Mark Slicer | Chief Financial Officer | 13,640 | 0 | 19 May, 2025 |
| David Brian Miller | - | 11,931 | 0 | 23 May, 2025 |
| Ju Jin | Svp Gm, Ibu | 10,254 | 0 | 16 Jun, 2023 |
| Robert Fiordalice | Svp Gm, Metrology Bu | 8,763 | 0 | 05 Mar, 2024 |
| James Harlow | Chief Operating Officer | 8,586 | 0 | 15 Feb, 2023 |
| May Su | - | 7,223 | 0 | 23 May, 2025 |
| Stephen Douglas Kelley | - | 5,623 | 0 | 23 May, 2025 |
| Bruce C Rhine | - | 3,500 | 0 | 17 Feb, 2022 |
| D Mayson Brooks | Vice President Gm, Ibu | 3,025 | 0 | 04 Sep, 2024 |
| Susan D Lynch | - | 2,923 | 0 | 23 May, 2025 |
* 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 | 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 | Ido Dolev | Common Stock | A | 3,440 | $0.00 | 27,355 | D | A |
| 02 Mar, 2026 | Shirley Chen | Common Stock | A | 2,523 | $0.00 | 15,517 | 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 | Ido Dolev | Common Stock | D | 819 | $207.50 | 26,536 | D | F |
| 02 Mar, 2026 | Shirley Chen | Performance Stock Unit | A | 1,261 | $0.00 | 1,261 | D | A |
| 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 |
| 02 Mar, 2026 | Michael P Plisinski | Performance Stock Unit | A | 7,239 | $0.00 | 7,239 | D | A |
| 02 Mar, 2026 | Ido Dolev | Performance Stock Unit | A | 1,720 | $0.00 | 1,720 | 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 | 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 | 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 | Michael P Plisinski | Performance Stock Unit | A | 7,239 | $0.00 | 7,239 | D | A |
| 01 Mar, 2026 | Yoon Ah Oh | Common Stock | A | 724 | $0.00 | 20,223 | D | M |