Company profile
Onto Innovation Inc. Insider Trading
ONTOEvery SEC Form 4 insider trading filing for Onto Innovation Inc. (ONTO) since April 2023: open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- NYSE
- Sector
- Measuring & Controlling Devices, NEC
- CIK
- 0000704532
- Filings
- 135
- Insiders
- 21
- Last filing
- 2026-09-02
Activity summary
Recent insider activity is bearish. Over the last 30 days, insiders net sold $2.0M across 3 transactions.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Onto Innovation Inc. insiders are net sellers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $25.2M.
90 day insight
Over the last 90 days, Onto Innovation Inc. insiders sold $2.0M across 3 transactions with no open-market purchases.
- Most active insider: Brian K Roberts with 2 transactions totaling $1.6M.
- Largest single sale: $824K by Brian K Roberts on Sep 2, 2026.
- 25% of recent sales were pre-scheduled 10b5-1 trades, typically less informative than open-market activity.
Activity skews bearish: sales outpace buys.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 2, 2026 | Brian K Roberts | ONTO | Tax Withholding | 3,239 | $254.55 | $824K |
| Sep 2, 2026 | Shirley Chen | ONTO | Tax Withholding | 1,516 | $254.55 | $386K |
| Sep 2, 2026 | Brian K Roberts | ONTO | Tax Withholding | 3,239 | $254.55 | $824K |
| Aug 21, 2026 | Susan D Lynch | ONTO | Sale10b5 | 1,000 | $302.30 | $302K |
| May 20, 2026 | Stephen Douglas Kelley | ONTO | Award | 761 | — | — |
45 more transactions hidden
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Query this yourself
The same rows, over the API.
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-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Onto Innovation Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings: institutional holders report positions within 45 days of quarter end. Joined with insider activity above: see who's loading up institutionally while insiders are trading. Full 13F-HR API →