Onto Innovation Inc (ONTO) · Insider trading
What Onto Innovation's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$902,300
2 insiders, 100% under a plan
Net, 12 months
−$902,300
bought less sold
Latest filing
2026-10-01
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Plisinski Michael PDirector, CEO | – | $18.01M | 5 | 2025-01-21 | 150,492 |
| Miller David BrianDirector | – | $600,000 | 1 | 2026-09-29 | 10,692 |
| Lynch Susan DDirector | – | $302,300 | 1 | 2026-08-21 | 2,684 |
| Vedula SrinivasSVP, Customer Success | – | $209,895 | 2 | 2025-02-13 | 15,472 |
| Slicer MarkChief Financial Officer | – | $176,451 | 1 | 2024-11-15 | 10,933 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-29 | Miller David BrianDirector | Saleplan | 2,000 | 300.00 | $600,000 | 10,692 | Form 4 |
| 2026-08-21 | Lynch Susan DDirector | Saleplan | 1,000 | 302.30 | $302,300 | 2,684 | Form 4 |
| 2025-02-13 | Vedula SrinivasSVP, Customer Success | Saleplan | 238 | 169.58 | $40,360 | 15,472 | Form 4 |
| 2025-01-21 | Plisinski Michael PDirector, CEO | Saleplan | 35,000 | 219.19 | $7.67M | 150,492 | Form 4 |
| 2025-01-16 | Plisinski Michael PDirector, CEO | Saleplan | 29,900 | 211.24 | $6.32M | 185,592 | Form 4 |
| 2025-01-16 | Plisinski Michael PDirector, CEO | Saleplan | 100 | 212.11 | $21,211 | 185,492 | Form 4 |
| 2025-01-15 | Vedula SrinivasSVP, Customer Success | Saleplan | 827 | 205.00 | $169,535 | 15,223 | Form 4 |
| 2025-01-14 | Plisinski Michael PDirector, CEO | Saleplan | 18,268 | 200.09 | $3.66M | 217,224 | Form 4 |
| 2025-01-14 | Plisinski Michael PDirector, CEO | Saleplan | 1,732 | 201.26 | $348,582 | 215,492 | Form 4 |
| 2024-11-15 | Slicer MarkChief Financial Officer | Saleplan | 1,100 | 160.41 | $176,451 | 10,933 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
46 × shares withheld for tax27 × grant or award12 × option exercise1 × gift
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-02 | Roberts Brian KChief Financial Officer | Shares withheld for tax F | −3,239 | 254.55 | 21,032 | Form 4/A |
| 2026-09-02 | Roberts Brian KChief Financial Officer | Shares withheld for tax F | −3,239 | 254.55 | 21,032 | Form 4 |
| 2026-09-02 | Chen ShirleySenior Vice President of Custo | Shares withheld for tax F | −1,516 | 254.55 | 14,001 | Form 4 |
| 2026-05-20 | Seams Christopher ADirector | Grant or award A | +761 | – | 38,513 | Form 4 |
| 2026-05-20 | Miller David BrianDirector | Grant or award A | +761 | – | 12,692 | Form 4 |
| 2026-05-20 | Schwartz Stephen SDirector | Grant or award A | +761 | – | 3,536 | Form 4 |
| 2026-05-20 | Kelley Stephen DouglasDirector | Grant or award A | +761 | – | 6,384 | Form 4 |
| 2026-05-20 | Lynch Susan DDirector | Grant or award A | +761 | – | 3,684 | Form 4 |
| 2026-05-20 | Su MayDirector | Grant or award A | +761 | – | 7,984 | Form 4 |
| 2026-05-15 | Oh Yoon AhSVP, Gen Counsel & Corp Sec | Shares withheld for tax F | −530 | 271.77 | 21,110 | Form 4 |
| 2026-05-15 | Yaldaei RamilChief Operating Officer | Shares withheld for tax F | −218 | 271.77 | 18,218 | Form 4 |
| 2026-05-15 | Yaldaei RamilChief Operating Officer | Shares withheld for tax F | −625 | 271.77 | 17,593 | Form 4 |
| 2026-03-03 | Plisinski Michael PDirector, Chief Executive Officer | Shares withheld for tax F | −3,742 | 207.50 | 179,242 | Form 4 |
| 2026-03-03 | Oh Yoon AhSVP, Gen Counsel & Corp Sec | Shares withheld for tax F | −417 | 207.50 | 21,640 | Form 4 |
| 2026-03-03 | Yaldaei RamilChief Operating Officer | Shares withheld for tax F | −615 | 207.50 | 18,436 | Form 4 |
| 2026-03-03 | Dolev IdoEVP, Prod Solutions Grp | Shares withheld for tax F | −819 | 207.50 | 26,536 | Form 4 |
| 2026-03-02 | Roberts Brian KChief Financial Officer | Grant or award A | +3,096 | – | 24,271 | Form 4 |
| 2026-03-02 | Plisinski Michael PDirector, Chief Executive Officer | Grant or award A | +14,479 | – | 182,984 | Form 4 |
| 2026-03-02 | Oh Yoon AhSVP, Gen Counsel & Corp Sec | Grant or award A | +2,408 | – | 22,057 | Form 4 |
| 2026-03-02 | Yaldaei RamilChief Operating Officer | Grant or award A | +7,683 | – | 19,051 | Form 4 |
| 2026-03-02 | Dolev IdoEVP, Prod Solutions Grp | Grant or award A | +3,440 | – | 27,355 | Form 4 |
| 2026-03-02 | Chen ShirleySVP Customer Success | Grant or award A | +2,523 | – | 15,517 | Form 4 |
| 2026-03-01 | Plisinski Michael PDirector, Chief Executive Officer | Option exercise M | +4,597 | – | 172,652 | Form 4 |
| 2026-03-01 | Plisinski Michael PDirector, Chief Executive Officer | Shares withheld for tax F | −2,222 | 215.89 | 170,430 | Form 4 |
| 2026-03-01 | Plisinski Michael PDirector, Chief Executive Officer | Shares withheld for tax F | −1,925 | 215.89 | 168,505 | Form 4 |
| 2026-03-01 | Oh Yoon AhSVP, Gen Counsel & Corp Sec | Option exercise M | +724 | – | 20,223 | Form 4 |
| 2026-03-01 | Oh Yoon AhSVP, Gen Counsel & Corp Sec | Shares withheld for tax F | −307 | 215.89 | 19,916 | Form 4 |
| 2026-03-01 | Oh Yoon AhSVP, Gen Counsel & Corp Sec | Shares withheld for tax F | −267 | 215.89 | 19,649 | Form 4 |
| 2026-03-01 | Yaldaei RamilChief Operating Officer | Option exercise M | +649 | – | 11,991 | Form 4 |
| 2026-03-01 | Yaldaei RamilChief Operating Officer | Shares withheld for tax F | −347 | 215.89 | 11,644 | Form 4 |
| 2026-03-01 | Yaldaei RamilChief Operating Officer | Shares withheld for tax F | −276 | 215.89 | 11,368 | Form 4 |
| 2026-02-14 | Plisinski Michael PDirector, Chief Executive Officer | Option exercise M | +18,445 | – | 180,606 | Form 4 |
| 2026-02-14 | Plisinski Michael PDirector, Chief Executive Officer | Shares withheld for tax F | −8,919 | 217.23 | 171,687 | Form 4 |
| 2026-02-14 | Plisinski Michael PDirector, Chief Executive Officer | Shares withheld for tax F | −3,632 | 217.23 | 168,055 | Form 4 |
| 2026-02-14 | Oh Yoon AhSVP, Gen Counsel & Corp Sec | Option exercise M | +3,084 | – | 21,094 | Form 4 |
| 2026-02-14 | Oh Yoon AhSVP, Gen Counsel & Corp Sec | Shares withheld for tax F | −1,094 | 217.23 | 20,000 | Form 4 |
| 2026-02-14 | Oh Yoon AhSVP, Gen Counsel & Corp Sec | Shares withheld for tax F | −501 | 217.23 | 19,499 | Form 4 |
| 2025-12-24 | Plisinski Michael PDirector, Chief Executive Officer | Gift G | −25,000 | – | 162,161 | Form 4 |
| 2025-12-02 | Dolev IdoEVP, Prod Solutions Grp | Shares withheld for tax F | −3,183 | 154.01 | 23,915 | Form 4 |
| 2025-10-03 | Yaldaei RamilChief Operating Officer | Shares withheld for tax F | −594 | 143.71 | 11,342 | Form 4 |
| 2025-09-02 | Chen ShirleySVP, Customer Success | Grant or award A | +12,994 | – | 12,994 | Form 4 |
| 2025-09-02 | Roberts Brian KChief Financial Officer | Grant or award A | +21,175 | – | 21,175 | Form 4 |
| 2025-06-02 | Dolev IdoEVP, Prod Solutions Grp | Grant or award A | +21,562 | – | 21,562 | Form 4 |
| 2025-06-02 | Dolev IdoEVP, Prod Solutions Grp | Grant or award A | +5,391 | – | 26,953 | Form 4 |
| 2025-05-21 | Kelley Stephen DouglasDirector | Grant or award A | +2,114 | – | 5,623 | Form 4 |
| 2025-05-21 | Lynch Susan DDirector | Grant or award A | +2,114 | – | 2,923 | Form 4 |
| 2025-05-21 | Miller David BrianDirector | Grant or award A | +2,114 | – | 11,931 | Form 4 |
| 2025-05-21 | Schwartz Stephen SDirector | Grant or award A | +2,114 | – | 2,775 | Form 4 |
| 2025-05-21 | Seams Christopher ADirector | Grant or award A | +2,114 | – | 37,752 | Form 4 |
| 2025-05-21 | Su MayDirector | Grant or award A | +2,114 | – | 7,223 | Form 4 |
| 2025-05-17 | Slicer MarkChief Financial Officer | Shares withheld for tax F | −2,066 | 99.40 | 13,640 | Form 4 |
| 2025-05-15 | Oh Yoon AhSVP, Gen Counsel & Corp Sec | Shares withheld for tax F | −603 | 98.04 | 18,010 | Form 4 |
| 2025-05-15 | Yaldaei RamilChief Operating Officer | Shares withheld for tax F | −217 | 98.04 | 12,400 | Form 4 |
| 2025-05-15 | Yaldaei RamilChief Operating Officer | Shares withheld for tax F | −609 | 98.04 | 11,791 | Form 4 |
| 2025-03-03 | Oh Yoon AhSVP, Gen Counsel & Corp Sec | Grant or award A | +2,941 | – | 18,613 | Form 4 |
| 2025-03-03 | Plisinski Michael PDirector, CEO | Grant or award A | +23,212 | – | 187,161 | Form 4 |
| 2025-03-03 | Slicer MarkChief Financial Officer | Grant or award A | +2,941 | – | 15,706 | Form 4 |
| 2025-03-03 | Vedula SrinivasSVP, Customer Success | Grant or award A | +2,574 | – | 18,730 | Form 4 |
| 2025-03-03 | Yaldaei RamilChief Operating Officer | Grant or award A | +3,769 | – | 12,617 | Form 4 |
| 2025-03-01 | Oh Yoon AhSVP, Gen Counsel & Corp Sec | Shares withheld for tax F | −304 | 145.66 | 15,672 | Form 4 |
| 2025-03-01 | Plisinski Michael PDirector, CEO | Shares withheld for tax F | −1,925 | 145.66 | 163,949 | Form 4 |
| 2025-03-01 | Slicer MarkChief Financial Officer | Shares withheld for tax F | −336 | 145.66 | 12,765 | Form 4 |
| 2025-03-01 | Vedula SrinivasSVP, Customer Success | Shares withheld for tax F | −199 | 145.66 | 16,156 | Form 4 |
| 2025-03-01 | Yaldaei RamilChief Operating Officer | Shares withheld for tax F | −305 | 145.66 | 8,848 | Form 4 |
| 2025-02-14 | Vedula SrinivasSVP, Customer Success | Option exercise M | +2,738 | – | 18,210 | Form 4 |
| 2025-02-14 | Vedula SrinivasSVP, Customer Success | Shares withheld for tax F | −1,391 | 176.55 | 16,819 | Form 4 |
| 2025-02-14 | Vedula SrinivasSVP, Customer Success | Shares withheld for tax F | −464 | 176.55 | 16,355 | Form 4 |
| 2025-02-14 | Slicer MarkChief Financial Officer | Option exercise M | +4,564 | – | 15,497 | Form 4 |
| 2025-02-14 | Slicer MarkChief Financial Officer | Shares withheld for tax F | −1,776 | 176.55 | 13,721 | Form 4 |
| 2025-02-14 | Slicer MarkChief Financial Officer | Shares withheld for tax F | −620 | 176.55 | 13,101 | Form 4 |
| 2025-02-14 | Plisinski Michael PDirector, CEO | Option exercise M | +23,650 | – | 181,121 | Form 4 |
| 2025-02-14 | Plisinski Michael PDirector, CEO | Shares withheld for tax F | −11,435 | 176.55 | 169,686 | Form 4 |
| 2025-02-14 | Plisinski Michael PDirector, CEO | Shares withheld for tax F | −3,812 | 176.55 | 165,874 | Form 4 |
| 2025-02-14 | Oh Yoon AhVP, General Counsel & Corp Sec | Option exercise M | +3,956 | – | 18,299 | Form 4 |
| 2025-02-14 | Oh Yoon AhVP, General Counsel & Corp Sec | Shares withheld for tax F | −1,830 | 176.55 | 16,469 | Form 4 |
| 2025-02-14 | Oh Yoon AhVP, General Counsel & Corp Sec | Shares withheld for tax F | −493 | 176.55 | 15,976 | Form 4 |
| 2025-02-10 | Plisinski Michael PDirector, CEO | Shares withheld for tax F | −2,859 | 183.28 | 147,633 | Form 4 |
| 2025-02-10 | Plisinski Michael PDirector, CEO | Option exercise M | +19,048 | – | 166,681 | Form 4 |
| 2025-02-10 | Plisinski Michael PDirector, CEO | Shares withheld for tax F | −9,210 | 183.28 | 157,471 | Form 4 |
| 2025-02-10 | Oh Yoon AhVP, General Counsel & Corp Sec | Shares withheld for tax F | −375 | 183.28 | 12,639 | Form 4 |
| 2025-02-10 | Oh Yoon AhVP, General Counsel & Corp Sec | Shares withheld for tax F | −1,016 | 183.28 | 11,623 | Form 4 |
| 2025-02-10 | Oh Yoon AhVP, General Counsel & Corp Sec | Option exercise M | +2,720 | – | 14,343 | Form 4 |
| 2025-02-10 | Vedula SrinivasSVP, Customer Success | Shares withheld for tax F | −306 | 183.28 | 14,917 | Form 4 |
| 2025-02-10 | Vedula SrinivasSVP, Customer Success | Shares withheld for tax F | −839 | 183.28 | 14,078 | Form 4 |
| 2025-02-10 | Vedula SrinivasSVP, Customer Success | Option exercise M | +1,632 | – | 15,710 | Form 4 |
| 2024-10-25 | Oh Yoon AhGeneral Counsel | Shares withheld for tax F | −1,296 | 204.39 | 13,014 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.