0000704532 2026-05-20 2026-05-20 0000704532 false 8-K 2026-05-20 Onto Innovation Inc. DE 001-39110 94-2276314 16 Jonspin Road Wilmington MA 01887 (978) 253-6200 false false false false Common Stock, $0.001 par value per share ONTO NYSE false