ONTO

insider transactions

ONTO INNOVATION INC. — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

No open-market buys or sells this period. The trades below are grants, option exercises and gifts, which carry no market price.

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Grant·A
May 20, 26

May Su

Director

$0

761 sh

Own +11%
Grant·A
May 20, 26

Stephen S Schwartz

Director

$0

761 sh

Own +27%
Grant·A
May 20, 26

Christopher A Seams

Director

$0

761 sh

Own +2%
Grant·A
May 20, 26

David Brian Miller

Director

$0

761 sh

Own +6%
Grant·A
May 20, 26

Susan D Lynch

Director

$0

761 sh

Own +26%
Grant·A
May 20, 26

Stephen Douglas Kelley

Director

$0

761 sh

Own +14%
Other·F
May 15, 26

Ramil Yaldaei

Chief Operating Officer

$169.9K

625 sh · $271.77

Own -3%
Other·F
May 15, 26

Ramil Yaldaei

Chief Operating Officer

$59.2K

218 sh · $271.77

Own -1%
Other·F
May 15, 26

Yoon Ah Oh

SVP, Gen Counsel & Corp Sec

$144.0K

530 sh · $271.77

Own -2%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
May 20, 2026	May Su	Director	Grant A	761	+11%	—	$0
May 20, 2026	Stephen S Schwartz	Director	Grant A	761	+27%	—	$0
May 20, 2026	Christopher A Seams	Director	Grant A	761	+2%	—	$0
May 20, 2026	David Brian Miller	Director	Grant A	761	+6%	—	$0
May 20, 2026	Susan D Lynch	Director	Grant A	761	+26%	—	$0
May 20, 2026	Stephen Douglas Kelley	Director	Grant A	761	+14%	—	$0
May 15, 2026	Ramil Yaldaei	Chief Operating Officer	Other F	625	-3%	$271.77	$169.9K
May 15, 2026	Ramil Yaldaei	Chief Operating Officer	Other F	218	-1%	$271.77	$59.2K
May 15, 2026	Yoon Ah Oh	SVP, Gen Counsel & Corp Sec	Other F	530	-2%	$271.77	$144.0K

About ONTO insider trading

This page tracks insider transactions for ONTO INNOVATION INC. (ONTO) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.