X0306 4/A 2022-01-05 2022-01-05 1 0000704532 ONTO INNOVATION INC. ONTO 0001244761 KOCH ROBERT ALAN C/O ONTO INNOVATION, INC. 16 JONSPIN ROAD WILMINGTON MA 01887 0 1 0 0 Corporate Secretary This exit Form 4 is filed solely to report that, effective January 5, 2022, the reporting person is no longer an 'officer' of Onto Innovation Inc. within the meaning of Rule 16a-1. - The Form 4 filed on January 5, 2022, inadvertently gave the wrong Company Central Index Key (CIK). This amendment fixes such error. /s/ Steven R. Roth For: Robert A. Koch 2022-01-05