On November 23, 2021, Edward J. Brown, Jr., currently a member of the Board of Directors of Onto Innovation Inc., notified the Board of his voluntary decision to retire from the Company?s Board and to not stand for re-election at the 2022 Annual Meeting of Stockholders (the ?Annual Meeting?), which is expected to be held in May 2022. Mr. Brown will continue to serve as a member of the Board until the expiration of his term at the Annual Meeting.