See up to 3 months of ONTO. The 7-day demo opens the 1M and 3M ranges and puts ONTO on your watchlist.
Start 7-day demoLatest ONTO insider trades
About ONTO INNOVATION INC. (ONTO)
ONTO INNOVATION INC. files with the SEC under CIK 0000704532 and is classified as measuring and controlling devices, nec. We track it alongside the rest of the Information Technology sector. The registration was withdrawn on 26 November 2025, so the planned offering is not going ahead in its filed form.
ONTO Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 2 | 3,000 | $902K |
| Tax withholding / forfeiture | 3 | 7,994 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
ONTO insider transactions (Form 4)
6137 Form 4 filings on record, the earliest from Oct 4, 2024, newest first. Filing history page 1 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| David Brian Miller - Director | Open-market sale | Common Stock | 2,000 footnote F1 | $300.00 | $600K | |
| ||||||
| Brian K. Roberts - Officer | Tax withholding / forfeiture | Common Stock | 3,239 footnote F1 | $254.55 | $824K | |
| ||||||
| Shirley Chen - Officer | Tax withholding / forfeiture | Common Stock | 1,516 footnote F1 | $254.55 | $386K | |
| ||||||
| Brian K. Roberts - Officer | Tax withholding / forfeiture | Common Stock | 3,239 footnote F1 | $254.55 | $824K | |
| ||||||
| Susan D. Lynch - Director | Open-market sale | Common Stock | 1,000 footnote F1 | $302.30 | $302K | |
| ||||||
| May Su - Director | Grant or award | Common Stock | 761 footnote F1 | $0.00 | - | |
| ||||||
| Christopher A. Seams - Director | Grant or award | Common Stock | 761 footnote F1 | $0.00 | - | |
| ||||||
| Stephen S. Schwartz - Director | Grant or award | Common Stock | 761 footnote F1 | $0.00 | - | |
| ||||||
| David Brian Miller - Director | Grant or award | Common Stock | 761 footnote F1 | $0.00 | - | |
| ||||||
| Susan D. Lynch - Director | Grant or award | Common Stock | 761 footnote F1 | $0.00 | - | |
| ||||||
| Stephen Douglas Kelley - Director | Grant or award | Common Stock | 761 footnote F1 | $0.00 | - | |
| ||||||
 Ramil Yaldaei - Officer | Tax withholding / forfeiture | Common Stock | 218 footnote F1 | $271.77 | $59K | |
| Ramil Yaldaei - Officer | Tax withholding / forfeiture | Common Stock | 625 footnote F1 | $271.77 | $170K | |
| ||||||
| Yoon Ah Oh - Officer | Tax withholding / forfeiture | Common Stock | 530 footnote F1 | $271.77 | $144K | |
| ||||||
| Brian K. Roberts - Officer | Grant or award | Common Stock | 3,096 footnote F1 | $0.00 | - | |
| Brian K. Roberts - Officer | Grant or award | Performance Stock Unit | 1,548 | $0.00 | - | |
| Brian K. Roberts - Officer | Grant or award | Performance Stock Unit | 1,548 | $0.00 | - | |
| ||||||
 Ido Dolev - Officer | Grant or award | Performance Stock Unit | 1,720 | $0.00 | - | |
| Ido Dolev - Officer | Grant or award | Common Stock | 3,440 footnote F1 | $0.00 | - | |
| Ido Dolev - Officer | Tax withholding / forfeiture | Common Stock | 819 footnote F2 | $207.50 | $170K | |
| Ido Dolev - Officer | Grant or award | Performance Stock Unit | 1,720 | $0.00 | - | |
| ||||||
| Ramil Yaldaei - Officer | Grant or award | Performance Stock Unit | 1,548 | $0.00 | - | |
| Ramil Yaldaei - Officer | Grant or award | Common Stock | 7,683 footnote F1 | $0.00 | - | |
| Ramil Yaldaei - Officer | Tax withholding / forfeiture | Common Stock | 615 footnote F2 | $207.50 | $128K | |
| Ramil Yaldaei - Officer | Grant or award | Performance Stock Unit | 1,548 | $0.00 | - | |
| ||||||
 Michael P. Plisinski - Officer | Grant or award | Common Stock | 14,479 footnote F1 | $0.00 | - | |
| Michael P. Plisinski - Officer | Tax withholding / forfeiture | Common Stock | 3,742 footnote F2 | $207.50 | $776K | |
| Michael P. Plisinski - Officer | Grant or award | Performance Stock Unit | 7,239 | $0.00 | - | |
| Michael P. Plisinski - Officer | Grant or award | Performance Stock Unit | 7,239 | $0.00 | - | |
| ||||||
| Yoon Ah Oh - Officer | Grant or award | Performance Stock Unit | 1,204 | $0.00 | - | |
| Yoon Ah Oh - Officer | Grant or award | Performance Stock Unit | 1,204 | $0.00 | - | |
| Yoon Ah Oh - Officer | Grant or award | Common Stock | 2,408 footnote F1 | $0.00 | - | |
| Yoon Ah Oh - Officer | Tax withholding / forfeiture | Common Stock | 417 footnote F2 | $207.50 | $87K | |
| ||||||
| Shirley Chen - Officer | Grant or award | Common Stock | 2,523 footnote F1 | $0.00 | - | |
| Shirley Chen - Officer | Grant or award | Performance Stock Unit | 1,261 | $0.00 | - | |
| Shirley Chen - Officer | Grant or award | Performance Stock Unit | 1,261 | $0.00 | - | |
| ||||||
| Ramil Yaldaei - Officer | Option exercise | Common Stock | 649 footnote F1 | $0.00 | - | |
| Ramil Yaldaei - Officer | Tax withholding / forfeiture | Common Stock | 347 footnote F2 | $215.89 | $75K | |
| Ramil Yaldaei - Officer | Tax withholding / forfeiture | Common Stock | 276 footnote F2 | $215.89 | $60K | |
| Ramil Yaldaei - Officer | Option exercise | Performance Stock Unit | 844 | $0.00 | - | |
| ||||||
| Michael P. Plisinski - Officer | Option exercise | Common Stock | 4,597 footnote F1 | $0.00 | - | |
| Michael P. Plisinski - Officer | Tax withholding / forfeiture | Common Stock | 2,222 footnote F2 | $215.89 | $480K | |
| Michael P. Plisinski - Officer | Tax withholding / forfeiture | Common Stock | 1,925 footnote F2 | $215.89 | $416K | |
| Michael P. Plisinski - Officer | Option exercise | Performance Stock Unit | 5,971 | $0.00 | - | |
| ||||||
| Yoon Ah Oh - Officer | Option exercise | Common Stock | 724 footnote F1 | $0.00 | - | |
| Yoon Ah Oh - Officer | Tax withholding / forfeiture | Common Stock | 307 footnote F2 | $215.89 | $66K | |
| Yoon Ah Oh - Officer | Tax withholding / forfeiture | Common Stock | 267 footnote F2 | $215.89 | $58K | |
| Yoon Ah Oh - Officer | Option exercise | Performance Stock Unit | 941 | $0.00 | - | |
| ||||||
| Michael P. Plisinski - Officer | Option exercise | Common Stock | 18,445 footnote F1 | $0.00 | - | |
| Michael P. Plisinski - Officer | Tax withholding / forfeiture | Common Stock | 8,919 footnote F2 | $217.23 | $1.94M | |
| Michael P. Plisinski - Officer | Tax withholding / forfeiture | Common Stock | 3,632 footnote F2 | $217.23 | $789K | |
| Michael P. Plisinski - Officer | Option exercise | Performance Stock Unit | 11,824 | $0.00 | - | |
| ||||||
| Yoon Ah Oh - Officer | Option exercise | Common Stock | 3,084 footnote F1 | $0.00 | - | |
| Yoon Ah Oh - Officer | Tax withholding / forfeiture | Common Stock | 1,094 footnote F2 | $217.23 | $238K | |
| Yoon Ah Oh - Officer | Tax withholding / forfeiture | Common Stock | 501 footnote F2 | $217.23 | $109K | |
| Yoon Ah Oh - Officer | Option exercise | Performance Stock Unit | 1,977 | $0.00 | - | |
| ||||||
| Ramil Yaldaei - Officer | Tax withholding / forfeiture | Common Stock | 594 footnote F1 | $143.71 | $85K | |
| ||||||
| Shirley Chen - Officer | Grant or award | Common Stock | 12,994 | $0.00 | - | |
| Brian K. Roberts - Officer | Grant or award | Common Stock | 21,175 | $0.00 | - | |
| Stephen S. Schwartz - Director | Grant or award | Common Stock | 2,114 | $0.00 | - | |
| David Brian Miller - Director | Grant or award | Common Stock | 2,114 | $0.00 | - | |
Item 2.01, 7.01, 9.01
Item 2.02, 9.01
Item 1.01, 2.03, 3.02, 8.01, 9.01
Item 5.07, 9.01
Recent ONTO Form 144 notices of proposed sale
2An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| DAVID B MILLER | Director | 2,000 | $600K | View on EDGAR | |
| SUSAN D LYNCH | Director | 1,000 |
ONTO insider trading FAQ
What is the latest insider trade for ONTO?
ONTO INNOVATION INC. (ONTO) had 5 insider filings in the last 90 days, with the most recent on 2026-10-01. The full record for ONTO runs to 37 Form 4 filings, the earliest from 2024-10-04. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying ONTO stock?
No insider purchases of ONTO were filed in the last 90 days.
How many insiders are selling ONTO stock?
2 insider sales of ONTO were filed in the last 90 days, totaling $902K.
Where can I see ONTO SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects ONTO Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Information Technology companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - David Brian Miller view on EDGAR
- - Brian K. Roberts view on EDGAR
- - Shirley Chen view on EDGAR
- - Brian K. Roberts view on EDGAR
- - Susan D. Lynch view on EDGAR
- - May Su view on EDGAR
- - Christopher A. Seams view on EDGAR
- - Stephen S. Schwartz view on EDGAR
- - David Brian Miller view on EDGAR
Related companies with recent insider activity
Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Information Technology
- Where ONTO's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
Follow ONTO with a 7-day demo
- ONTO on your watchlist
- Every ONTO Form 4 filing on record
- Up to 3 months of ONTO price history
- The daily trading plan of ranked insider buys, on a delay, with the plan archive
Start 7-day demoCard required. Your card is never charged for the demo.
