X0508 4 2025-06-12 1 0000704532 ONTO INNOVATION INC. ONTO 0001930126 Slicer Mark 16 JONSPIN ROAD WILMINGTON MA 01887 0 1 0 0 Chief Financial Officer 0 This exit Form 4 is filed solely to report that, effective June 12, 2025, the reporting person is no longer an 'officer' of Onto Innovation Inc. within the meaning of Rule 16a-1. By: Yoon Ah Oh For: Mark R. Slicer 2025-06-13