Exhibit 99.1 Onto Innovation Reports 2025 Fourth Quarter and Full Year Results Wilmington, Mass., February 19, 2026 – Onto Innovation Inc. (NYSE: ONTO) ("Onto Innovation," "Onto," or the "Company") today announced financial results for the fourth quarter and full year 2025. Fourth Quarter and Full Year Business and Financial Highlights: "2025 concluded on a strong note for Onto Innovation, highlighted by record revenue for both the fourth quarter and the full year, the successful acquisition of select produ ...