RAMIL YALDAEI - 15 May 2025 Form 4 Insider Report for ONTO INNOVATION INC. (ONTO)

Role: Chief Operating Officer
Signature: By: Mark R. Slicer For: Ramil Yaldaei
Issuer symbol: ONTO
Transactions as of: 15 May 2025
Net transactions value: -$80,981
Form type: 4
Filing time: 19 May 2025, 16:23:54 UTC
Previous filing: 05 Mar 2025
Next filing: 06 Oct 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
YALDAEI RAMIL	Chief Operating Officer	C/O ONTO INNOVATION INC., 16 JONSPIN ROAD, WILMINGTON	By: Mark R. Slicer For: Ramil Yaldaei	16 May 2025	0001976282

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ONTO	Common Stock	Tax liability	$21,275	-217	-1.7%	$98.04	12,400	15 May 2025	Direct	F1
transaction	ONTO	Common Stock	Tax liability	$59,706	-609	-4.9%	$98.04	11,791	15 May 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares withheld by Issuer to satisfy tax withholding obligations in connection with the vesting of restricted stock unit or performance stock unit grants previously received by the Reporting Person.