ONTO Insider Activity
View recent SEC Form 4 insider transactions for ONTO, including purchases, sales, option exercises, and other insider filings.
| Date | Insider | Type | Quantity | Price | Total Value | Shares Owned |
|---|---|---|---|---|---|---|
| Sep 29, 2026 | MILLER DAVID BRIAN | Sale | 2,000 | $300.00 | $600,000.00 | 10,692 |
| Sep 02, 2026 | Chen Shirley | Tax Withheld | 1,516 | $254.55 | $385,897.80 | 14,001 |
| Sep 02, 2026 | ROBERTS BRIAN K | Tax Withheld | 3,239 | $254.55 | $824,487.45 | 21,032 |
| Aug 21, 2026 | Lynch Susan D | Sale | 1,000 | $302.30 | $302,300.00 | 2,684 |
| May 20, 2026 | Kelley Stephen Douglas | Grant | 761 | $0.00 | $0.00 | 6,384 |
| May 20, 2026 | Lynch Susan D | Grant | 761 | $0.00 | $0.00 | 3,684 |
| May 20, 2026 | MILLER DAVID BRIAN | Grant | 761 | $0.00 | $0.00 | 12,692 |
| May 20, 2026 | SCHWARTZ STEPHEN S | Grant | 761 | $0.00 | $0.00 | 3,536 |
| May 20, 2026 | SEAMS CHRISTOPHER A | Grant | 761 | $0.00 | $0.00 | 38,513 |
| May 20, 2026 | Su May | Grant | 761 | $0.00 | $0.00 | 7,984 |
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