ONTO
Onto Innovation Inc.
Onto Innovation Inc. insider trading
Onto Innovation Inc. files with the SEC as a Measuring & Controlling Devices, NEC company headquartered in Wilmington, MA. Every time one of its executives or directors buys or sells the stock, the filing appears here the moment it reaches the SEC — with grants and option exercises set apart from the trades that cost the insider their own money.
From SEC filings
Recent ONTO insider transactions
One insider traded ONTO on the open market on Aug 21, 2026 — 1 sale worth $302.3K, of which the one was pre-scheduled under a 10b5-1 plan.
- Bought
- —
- Sold
- $302.3K
- Net
- −$302.3K
- Insiders
- 1
1 of 1 on a 10b5-1 plan
Lynch Susan D10b5-1
Director
−$302.3K
Aug 21, 2026
1,000 sh · $302.30
| Date | Insider | Shares | Price | Value |
|---|---|---|---|---|
| Aug 21, 2026 | Lynch Susan D10b5-1Director | 1,000 | $302.30 | −$302.3K |
SEC Form 4 data, Q3 2024 to Q2 2026
ONTO insider trading by quarter
Between Jul 01, 2024 and Jun 30, 2026, 3 insiders traded ONTO on the open market: 0 purchases and 9 sales worth $18.7M, every sale pre-scheduled under a 10b5-1 plan. In the last four quarters alone: no open-market trades at all.
| Quarter | Bought | Sold | Insiders |
|---|---|---|---|
| Q2 2026 | — | — | |
| Q1 2026 | — | — | |
| Q4 2025 | — | — | |
| Q3 2025 | — | — | |
| Q2 2025 | — | — | |
| Q1 2025 | — | −$18.2M7 sales · all on a plan | |
| Q4 2024 | — | −$176.5K1 sale · all on a plan | |
| Q3 2024 | — | −$264.2K1 sale · all on a plan |
- Largest sale
- −$7.7M of ONTO by Plisinski Michael P (CEO · Director) on Jan 21, 2025, under a 10b5-1 plan.
Open-market transactions through Jun 30, 2026most recent first
Vedula Srinivas10b5-1
SVP, Customer Success
−$40.4K
Feb 13, 2025
238 sh · $169.58
Plisinski Michael P10b5-1
CEO · Director
−$7.7M
Jan 21, 2025
35,000 sh · $219.19
Plisinski Michael P10b5-1
CEO · Director
−$6.3M
Jan 16, 2025
29,900 sh · $211.24
Plisinski Michael P10b5-1
CEO · Director
−$21.2K
Jan 16, 2025
100 sh · $212.11
Vedula Srinivas10b5-1
SVP, Customer Success
−$169.5K
Jan 15, 2025
827 sh · $205.00
Plisinski Michael P10b5-1
CEO · Director
−$3.7M
Jan 14, 2025
18,268 sh · $200.09
Plisinski Michael P10b5-1
CEO · Director
−$348.6K
Jan 14, 2025
1,732 sh · $201.26
Slicer Mark10b5-1
Chief Financial Officer
−$176.5K
Nov 15, 2024
1,100 sh · $160.41
Vedula Srinivas10b5-1
SVP, Customer Success
−$264.2K
Sep 03, 2024
1,275 sh · $207.24
| Date | Insider | Shares | Price | Value |
|---|---|---|---|---|
| Feb 13, 2025 | Vedula Srinivas10b5-1SVP, Customer Success | 238 | $169.58 | −$40.4K |
| Jan 21, 2025 | Plisinski Michael P10b5-1CEO · Director | 35,000 | $219.19 | −$7.7M |
| Jan 16, 2025 | Plisinski Michael P10b5-1CEO · Director | 29,900 | $211.24 | −$6.3M |
| Jan 16, 2025 | Plisinski Michael P10b5-1CEO · Director | 100 | $212.11 | −$21.2K |
| Jan 15, 2025 | Vedula Srinivas10b5-1SVP, Customer Success | 827 | $205.00 | −$169.5K |
| Jan 14, 2025 | Plisinski Michael P10b5-1CEO · Director | 18,268 | $200.09 | −$3.7M |
| Jan 14, 2025 | Plisinski Michael P10b5-1CEO · Director | 1,732 | $201.26 | −$348.6K |
| Nov 15, 2024 | Slicer Mark10b5-1Chief Financial Officer | 1,100 | $160.41 | −$176.5K |
| Sep 03, 2024 | Vedula Srinivas10b5-1SVP, Customer Success | 1,275 | $207.24 | −$264.2K |
From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.
Onto Innovation Inc. company record
- SEC industry classification
- Measuring & Controlling Devices, NEC
- Headquarters
- Wilmington, MA
- Incorporated in
- DE
- Listed on
- NYSE
- SEC Central Index Key
- 0000704532
- Previously filed as
- NANOMETRICS INC
Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Technology sector shown above.
After insiders bought ONTO
What the stock actually did in the 90 days following each open-market purchase
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How to read ONTO insider activity
- Open-market purchase (code P)
- An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.
- Grants and option exercises (codes A, M)
- Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.
- Cluster buy
- Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.
Other Technology tickers
Questions
- Are ONTO insiders buying or selling?
- Between Aug 21, 2026 and Aug 21, 2026, 1 Onto Innovation Inc. insider made no open-market purchases and 1 sale worth $302.3K, a net sale of $302.3K. 1 of the sales was pre-scheduled under a Rule 10b5-1 plan.
- How much ONTO stock have insiders bought and sold in the last two years?
- Between Jul 01, 2024 and Jun 30, 2026, 3 Onto Innovation Inc. insiders made no open-market purchases and 9 sales worth $18.7M. Every one of the sales was pre-scheduled under a Rule 10b5-1 plan. In the four quarters to Jun 30, 2026: no purchases and no sales. The largest sale was Plisinski Michael P selling $7.7M on Jan 21, 2025.
- What was the largest recent ONTO insider trade?
- Lynch Susan D (Director) sold $302.3K of ONTO stock on Aug 21, 2026 at about $302.30 a share, under a pre-scheduled 10b5-1 plan.
- When did an insider last buy ONTO shares?
- No open-market purchase by a Onto Innovation Inc. insider appears in the filings from Aug 21, 2026 to Aug 21, 2026 — every recorded open-market transaction in that period was a sale.
- Where does ONTO insider trading data come from?
- From the Form 4 filings Onto Innovation Inc.'s officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.
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