Susan D. Lynch - 20 May 2026 Form 4 Insider Report for ONTO INNOVATION INC. (ONTO)

Reporting relationship: Director
Issuer ticker: ONTO
Reported as of: 20 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 22 May 2026, 16:46:27 UTC
Prior SEC filing: 15 May 2026
Next SEC filing: 03 Jun 2026
Source filing: View source filing
Reporting owner signature: By: Eric French For: Susan D. Lynch

Key filing fact

Susan D. Lynch filed Form 4 for ONTO INNOVATION INC. (ONTO) on 22 May 2026.

Key facts

This page summarizes Susan D. Lynch's Form 4 filing for ONTO INNOVATION INC. (ONTO).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 22 May 2026, 16:46.

Change

Previous filing in this sequence was filed on 15 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001784973 Primary reporting owner

Lynch Susan D

Relationship: Director
Address: C/O ONTO INNOVATION INC., 16 JONSPIN ROAD, WILMINGTON
Signature: By: Eric French For: Susan D. Lynch
Signature date: 22 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ONTO transaction

Common Stock

Award

Transaction value
Shares: +761
Change %: +26%
Price: $0.000000^*
Shares after: 3,684
Date: 20 May 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The Reporting Person was granted restricted stock units ("RSUs"), each of which represents a contingent right to receive one (1) share of ONTO Common Stock. 100% of the shares of Common Stock subject to the RSU vest one (1) year from the grant date. The Reporting Person has elected to defer settlement of these RSUs pursuant to the Onto Innovation Nonqualified Deferred Compensation Plan. Once vested, the shares will be issued in accordance with the Reporting Person's deferral election.