ONTO INNOVATION INC. insider trading

ONTONYSE

$327.77+12.89 (+4.09%)as of Oct 2, 2026

“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.” — Peter Lynch

Insider Trading vs Stock Price data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+134.4%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Open market purchase

Open market sell

Marker size reflects transaction size.

Net dollar flow · Buy / Sell balance

Premium

Q2 '25Q3 '25Q4 '25Q1 '26Q2 '26Q3 '26

Unlock quarterly net flow

Key players

MPMichael P. PlisinskiChief Executive Officer0.3652%of company
CAChristopher A. SeamsDirector0.0785%of company
IDIdo DolevEVP, Prod Solutions Grp0.0541%of company
YAYoon Ah OhSVP, Gen Counsel & Corp Sec0.043%of company
BKBrian K. RobertsChief Financial Officer0.0429%of company
SVSrini VedulaSVP, Customer Success0.0382%of company
RYRamil YaldaeiChief Operating Officer0.0359%of company
SCShirley ChenSenior Vice President of Custo0.0285%of company
MSMark SlicerChief Financial Officer0.0278%of company
DBDavid Brian MillerDirector0.0218%of company

AI Activity Analysis

Premium

Coming soonAI reads of insider activity will appear here for Premium accounts.

Insider activity

Fromto

Company	Insider / role	Action	ΔOwn	Avg price	Amount
ONTO	David Brian MillerDirector	Open market sell$600K	-15.8%	$300.00	$600K	Sep 29, 2026	Oct 1, 2026
ONTO	Susan D. LynchDirector	Open market sell$302K	-27.1%	$302.30	$302K	Aug 21, 2026	Aug 25, 2026

End of history · 2 transactions