There have been 50 recent insider transactions recorded for Onto Innovation Inc. (ONTO), including 20 buys and 23 sells. Total insider buying was valued at RSU Award and total insider selling at $2.55M.
Notable insiders with recent activity include Plisinski Michael P, Oh Yoon Ah, Yaldaei Ramil. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — ONTO
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-03-03 |
Plisinski Michael P |
Chief Executive Officer |
Tax Withholding of RSU |
3,742 |
$207.50 |
$776.47K |
179,242 |
| 2026-03-03 |
Oh Yoon Ah |
SVP, Gen Counsel & Corp Sec |
Tax Withholding of RSU |
417 |
$207.50 |
$86.53K |
21,640 |
| 2026-03-03 |
Yaldaei Ramil |
Chief Operating Officer |
Tax Withholding of RSU |
615 |
$207.50 |
$127.61K |
18,436 |
| 2026-03-03 |
Dolev Ido |
EVP, Prod Solutions Grp |
Tax Withholding of RSU |
819 |
$207.50 |
$169.94K |
26,536 |
| 2026-03-02 |
Roberts Brian K |
Chief Financial Officer |
RSU Award |
1,548 |
- |
- |
1,548 |
| 2026-03-02 |
Plisinski Michael P |
Chief Executive Officer |
RSU Award |
7,239 |
- |
- |
7,239 |
| 2026-03-02 |
Oh Yoon Ah |
SVP, Gen Counsel & Corp Sec |
RSU Award |
1,204 |
- |
- |
1,204 |
| 2026-03-02 |
Yaldaei Ramil |
Chief Operating Officer |
RSU Award |
1,548 |
- |
- |
1,548 |
| 2026-03-02 |
Dolev Ido |
EVP, Prod Solutions Grp |
RSU Award |
1,720 |
- |
- |
1,720 |
| 2026-03-02 |
Chen Shirley |
SVP Customer Success |
RSU Award |
1,261 |
- |
- |
1,261 |
| 2026-03-01 |
Plisinski Michael P |
Chief Executive Officer |
Option Exercise (Sell) |
5,971 |
- |
- |
- |
| 2026-03-01 |
Oh Yoon Ah |
SVP, Gen Counsel & Corp Sec |
Option Exercise (Sell) |
941 |
- |
- |
- |
| 2026-02-14 |
Plisinski Michael P |
Chief Executive Officer |
Option Exercise (Sell) |
11,824 |
- |
- |
- |
| 2026-02-14 |
Oh Yoon Ah |
SVP, Gen Counsel & Corp Sec |
Option Exercise (Sell) |
1,977 |
- |
- |
- |
| 2025-12-24 |
Plisinski Michael P |
Chief Executive Officer |
Gift (Given) |
25,000 |
- |
- |
162,161 |
| 2025-12-02 |
Dolev Ido |
EVP, Prod Solutions Grp |
Tax Withholding of RSU |
3,183 |
$154.01 |
$490.21K |
23,915 |
| 2025-10-03 |
Yaldaei Ramil |
Chief Operating Officer |
Tax Withholding of RSU |
594 |
$143.71 |
$85.36K |
11,342 |
| 2025-09-02 |
Roberts Brian K |
Chief Financial Officer |
RSU Award |
21,175 |
- |
- |
21,175 |
| 2025-09-02 |
Chen Shirley |
SVP, Customer Success |
RSU Award |
12,994 |
- |
- |
12,994 |
| 2025-06-16 |
Roberts Brian K |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-06-16 |
Chen Shirley |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-06-12 |
Slicer Mark |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-06-02 |
Dolev Ido |
EVP, Prod Solutions Grp |
RSU Award |
2,695 |
- |
- |
2,695 |
| 2025-05-21 |
Berlinghieri Leo |
Director |
Unknown |
- |
- |
- |
- |
| 2025-05-21 |
Seams Christopher A |
Director |
RSU Award |
2,114 |
- |
- |
37,752 |
| 2025-05-21 |
Miller David Brian |
Director |
RSU Award |
2,114 |
- |
- |
11,931 |
| 2025-05-21 |
Schwartz Stephen S |
Director |
RSU Award |
2,114 |
- |
- |
2,775 |
| 2025-05-21 |
Tsingos Christine A |
Director |
Unknown |
- |
- |
- |
- |
| 2025-05-21 |
Kelley Stephen Douglas |
Director |
RSU Award |
2,114 |
- |
- |
5,623 |
| 2025-05-21 |
Lynch Susan D |
Director |
RSU Award |
2,114 |
- |
- |
2,923 |
| 2025-05-21 |
Su May |
Director |
RSU Award |
2,114 |
- |
- |
7,223 |
| 2025-05-17 |
Slicer Mark |
Chief Financial Officer |
Tax Withholding of RSU |
2,066 |
$99.40 |
$205.36K |
13,640 |
| 2025-05-15 |
Oh Yoon Ah |
SVP, Gen Counsel & Corp Sec |
Tax Withholding of RSU |
603 |
$98.04 |
$59.12K |
18,010 |
| 2025-05-15 |
Yaldaei Ramil |
Chief Operating Officer |
Tax Withholding of RSU |
609 |
$98.04 |
$59.71K |
11,791 |
| 2025-04-09 |
Vedula Srinivas |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-03-03 |
Plisinski Michael P |
CEO |
RSU Award |
11,606 |
- |
- |
11,606 |
| 2025-03-03 |
Vedula Srinivas |
SVP, Customer Success |
RSU Award |
1,286 |
- |
- |
1,286 |
| 2025-03-03 |
Oh Yoon Ah |
SVP, Gen Counsel & Corp Sec |
RSU Award |
1,470 |
- |
- |
1,470 |
| 2025-03-03 |
Slicer Mark |
Chief Financial Officer |
RSU Award |
1,470 |
- |
- |
1,470 |
| 2025-03-03 |
Yaldaei Ramil |
Chief Operating Officer |
RSU Award |
1,884 |
- |
- |
1,884 |
| 2025-03-01 |
Plisinski Michael P |
CEO |
Tax Withholding of RSU |
1,925 |
$145.66 |
$280.4K |
163,949 |
| 2025-03-01 |
Vedula Srinivas |
SVP, Customer Success |
Tax Withholding of RSU |
199 |
$145.66 |
$28.99K |
16,156 |
| 2025-03-01 |
Oh Yoon Ah |
SVP, Gen Counsel & Corp Sec |
Tax Withholding of RSU |
304 |
$145.66 |
$44.28K |
15,672 |
| 2025-03-01 |
Slicer Mark |
Chief Financial Officer |
Tax Withholding of RSU |
336 |
$145.66 |
$48.94K |
12,765 |
| 2025-03-01 |
Yaldaei Ramil |
Chief Operating Officer |
Tax Withholding of RSU |
305 |
$145.66 |
$44.43K |
8,848 |
| 2025-02-14 |
Plisinski Michael P |
CEO |
Option Exercise (Sell) |
11,825 |
- |
- |
- |
| 2025-02-14 |
Vedula Srinivas |
SVP, Customer Success |
Option Exercise (Sell) |
1,369 |
- |
- |
- |
| 2025-02-14 |
Oh Yoon Ah |
VP, General Counsel & Corp Sec |
Option Exercise (Sell) |
1,978 |
- |
- |
- |
| 2025-02-14 |
Slicer Mark |
Chief Financial Officer |
Option Exercise (Sell) |
2,282 |
- |
- |
- |
| 2025-02-13 |
Vedula Srinivas |
SVP, Customer Success |
Informative Sell |
238 |
$169.58 |
$40.36K |
15,472 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
