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| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| ONTO | Plisinski Michael P | Chief Executive Officer | Mar 01 '26 | Option Exercise | 0.00 | 10,568 | 0 | 172,652 | Mar 03 12:00 AM |
| ONTO | Plisinski Michael P | Chief Executive Officer | Feb 14 '26 | Option Exercise | 0.00 | 30,269 | 0 | 180,606 | Feb 18 12:00 AM |
| ONTO | Plisinski Michael P | CEO | Feb 14 '25 | Option Exercise | 0.00 | 35,475 | 0 | 181,121 | Feb 19 12:00 AM |
| ONTO | Plisinski Michael P | CEO | Feb 10 '25 | Option Exercise | 0.00 | 28,572 | 0 | 166,681 | Feb 12 12:00 AM |
| ONTO | Plisinski Michael P | CEO | Jan 21 '25 | Sale | 219.19 | 35,000 | 7,671,650 | 150,492 | Jan 22 12:00 AM |
| ONTO | Plisinski Michael P | CEO | Jan 16 '25 | Sale | 211.24 | 30,000 | 6,337,287 | 185,492 | Jan 21 12:00 AM |
| ONTO | Plisinski Michael P | CEO | Jan 14 '25 | Sale | 200.19 | 20,000 | 4,003,826 | 215,492 | Jan 16 12:00 AM |
| ONTO | Plisinski Michael P | CEO | Mar 20 '24 | Sale | 175.48 | 40,000 | 7,019,129 | 235,492 | Mar 22 12:00 AM |
| ONTO | Plisinski Michael P | CEO | Feb 10 '24 | Option Exercise | 0.00 | 28,575 | 0 | 276,572 | Feb 12 12:00 AM |
| ONTO | Plisinski Michael P | CEO | Feb 08 '24 | Option Exercise | 0.00 | 24,834 | 0 | 272,596 | Feb 12 12:00 AM |
| ONTO | Plisinski Michael P | CEO | Aug 21 '23 | Sale | 112.85 | 31,000 | 3,498,439 | 251,794 | Aug 22 12:00 AM |
| ONTO | Plisinski Michael P | CEO | Feb 08 '23 | Option Exercise | 0.00 | 37,251 | 0 | 262,235 | Feb 09 12:00 AM |
| ONTO | Plisinski Michael P | CEO | Feb 07 '23 | Option Exercise | 0.00 | 31,208 | 0 | 253,517 | Feb 09 12:00 AM |
| ONTO | Plisinski Michael P | CEO | Feb 07 '22 | Option Exercise | 0.00 | 46,815 | 0 | 245,881 | Feb 09 12:00 AM |
| ONTO | Plisinski Michael P | Chief Executive Officer | Aug 06 '21 | Sale | 75.34 | 29,592 | 2,229,461 | 217,643 | Aug 10 12:00 AM |
| ONTO | Plisinski Michael P | Chief Executive Officer | Jun 16 '21 | Sale | 75.24 | 1,700 | 127,908 | 247,235 | Jun 17 12:00 AM |
| ONTO | Plisinski Michael P | Chief Executive Officer | Jun 15 '21 | Sale | 75.25 | 1,800 | 135,450 | 248,935 | Jun 17 12:00 AM |
| ONTO | Plisinski Michael P | Chief Executive Officer | Jun 14 '21 | Sale | 75.30 | 6,908 | 520,172 | 250,735 | Jun 15 12:00 AM |
| ONTO | Plisinski Michael P | Chief Executive Officer | Nov 04 '20 | Sale | 35.34 | 24,821 | 877,174 | 247,055 | Nov 05 12:00 AM |
| ONTO | Plisinski Michael P | Chief Executive Officer | Nov 03 '20 | Sale | 35.22 | 45,179 | 1,591,290 | 271,876 | Nov 05 12:00 AM |