Insider Trading for ONTO
View recent insider trading activity including purchases, sales, and awards. Insider trading can provide insights into how executives view their company's prospects.
Insider Trading Summary
Shares Acquired
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Shares Disposed
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Net Position
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Recent Activity (30 Days)
No insider transactions in the past 30 days.
Quarterly Activity (3 Months)
Acquisitions: 4.6K shares
Dispositions: 1.4K shares
Net: 3.2K shares
Insiders have been net buyers over the quarter, suggesting potential confidence in medium-term business fundamentals.
Key Insider Activity: Feb 13, 2025 to May 20, 2026
Plisinski Michael P
ExecutiveCorporate Officer
+11.0K shares
19 transactions
OH Yoon Ah
ExecutiveVice President
+6.0K shares
21 transactions
Slicer Mark
ExecutiveOfficer
+3.4K shares
10 transactions
Dolev Ido
ExecutiveVice President
+30.8K shares
7 transactions
YALDAEI RAMIL
ExecutiveCorporate Officer
+11.7K shares
11 transactions
Transaction Details
| Date | Insider | Role | Transaction | Shares | Price | Value | Owned After | SEC Filing |
|---|---|---|---|---|---|---|---|---|
| May 20, 2026 | Su May | DDirector | Award/Grant | 761 | $0.00 | $0.00 | 8.0K | View |
| May 20, 2026 | SEAMS CHRISTOPHER A | DDirector | Award/Grant | 761 | $0.00 | $0.00 | 38.5K | View |
| May 20, 2026 | SCHWARTZ STEPHEN S | DDirector | Award/Grant | 761 | $0.00 | $0.00 | 3.5K | View |
May 20, 2026 | Locked | — | — | — | — | — | — | — |
May 20, 2026 | Locked | — | — | — | — | — | — | — |
May 20, 2026 | Locked | — | — | — | — | — | — | — |
May 15, 2026 | Locked | — | — | — | — | — | — | — |
May 15, 2026 | Locked | — | — | — | — | — | — | — |
May 15, 2026 | Locked | — | — | — | — | — | — | — |
Mar 3, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 3, 2026 | Locked | — | — | — | — | — | — | — |
Mar 3, 2026 | Locked | — | — | — | — | — | — | — |
Mar 2, 2026 | Locked | — | — | — | — | — | — | — |
Mar 2, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 2, 2026 | Locked | — | — | — | — | — | — | — |
Mar 1, 2026 | Locked | — | — | — | — | — | — | — |
Mar 1, 2026 | Locked | — | — | — | — | — | — | — |
Mar 1, 2026 | Locked | — | — | — | — | — | — | — |
Mar 1, 2026 | Locked | — | — | — | — | — | — | — |
Mar 1, 2026 | Locked | — | — | — | — | — | — | — |
Mar 1, 2026 | Locked | — | — | — | — | — | — | — |
Mar 1, 2026 | Locked | — | — | — | — | — | — | — |
Mar 1, 2026 | Locked | — | — | — | — | — | — | — |
Feb 14, 2026 | Locked | — | — | — | — | — | — | — |
Feb 14, 2026 | Locked | — | — | — | — | — | — | — |
Feb 14, 2026 | Locked | — | — | — | — | — | — | — |
Feb 14, 2026 | Locked | — | — | — | — | — | — | — |
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Feb 14, 2026 | Locked | — | — | — | — | — | — | — |
Feb 14, 2026 | Locked | — | — | — | — | — | — | — |
Feb 14, 2026 | Locked | — | — | — | — | — | — | — |
Dec 24, 2025 | Locked | — | — | — | — | — | — | — |
Dec 2, 2025 | Locked | — | — | — | — | — | — | — |
Oct 3, 2025 | Locked | — | — | — | — | — | — | — |
Sep 2, 2025 | Locked | — | — | — | — | — | — | — |
Sep 2, 2025 | Locked | — | — | — | — | — | — | — |
Jun 16, 2025 | Locked | — | — | — | — | — | — | — |
Jun 16, 2025 | Locked | — | — | — | — | — | — | — |
Jun 12, 2025 | Locked | — | — | — | — | — | — | — |
Jun 2, 2025 | Locked | — | — | — | — | — | — | — |
Jun 2, 2025 | Locked | — | — | — | — | — | — | — |
Jun 2, 2025 | Locked | — | — | — | — | — | — | — |
May 21, 2025 | Locked | — | — | — | — | — | — | — |
May 21, 2025 | Locked | — | — | — | — | — | — | — |
May 21, 2025 | Locked | — | — | — | — | — | — | — |
May 21, 2025 | Locked | — | — | — | — | — | — | — |
May 21, 2025 | Locked | — | — | — | — | — | — | — |
May 21, 2025 | Locked | — | — | — | — | — | — | — |
May 21, 2025 | Locked | — | — | — | — | — | — | — |
May 21, 2025 | Locked | — | — | — | — | — | — | — |
May 17, 2025 | Locked | — | — | — | — | — | — | — |
May 15, 2025 | Locked | — | — | — | — | — | — | — |
May 15, 2025 | Locked | — | — | — | — | — | — | — |
May 15, 2025 | Locked | — | — | — | — | — | — | — |
Apr 9, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Mar 1, 2025 | Locked | — | — | — | — | — | — | — |
Mar 1, 2025 | Locked | — | — | — | — | — | — | — |
Mar 1, 2025 | Locked | — | — | — | — | — | — | — |
Mar 1, 2025 | Locked | — | — | — | — | — | — | — |
Mar 1, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 14, 2025 | Locked | — | — | — | — | — | — | — |
Feb 13, 2025 | Locked | — | — | — | — | — | — | — |
Click "View" in the SEC Filing column to access the detailed SEC form submission for each transaction.
Executive Activity:
Executives have been net buyers of ONTO stock, which is typically a strong positive signal.