EXHIBIT 99.1 Onto Innovation Reports 2025 Third Quarter Results Wilmington, Mass., November 6, 2025 – Onto Innovation Inc. (NYSE: ONTO) ("Onto Innovation," "Onto," or the "Company") today announced financial results for the third quarter of 2025. Third Quarter Business and Financial Highlights: "The qualification of the 3Di technology for 3D bump metrology by two customers supporting HBM and another customer supporting 2.5D logic applications for AI is another great step forward by the Onto Innovation team ...