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onto NEWS RELEASE Onto Innovation Reports 2021 Third Quarter Results 11/4/2021 innovation .. ● ● WILMINGTON , Mass .-- ( BUSINESS WIRE ) -- Onto Innovation Inc. ( NYSE : ONTO ) ( " Onto Innovation , " " Onto , " or the " Company " ) today announced financial results for the third quarter of 2021 . 2021 Third Quarter Financial Highlights Quarterly revenue of $ 200.6 million represents 59 % year - over - year growth compared to the third quarter of 2020 . Gross margin improved to 55 % from 54 % year - over - year . Operating margin improved to 21 % GAAP and 29 % non - GAAP , in line with the Company's $ 800 million long term operating model . • Year - to - date cash flow from operations totaled $ 126.3 million , or 22 % of revenue . 2021 Third Quarter Business Highlights Record quarterly revenue exceeds guidance , resulting in 59 % year - over - year growth ● Continued revenue growth expected for the fourth quarter extending into 2022 Metrology revenue from advanced logic customers increased 95 % over the second quarter , driven by investments in next - generation transistor structures and expanding applications . • New top five IDM selected Onto Innovation's integrated metrology platform , contributing to 50 % integrated metrology revenue growth year - to - date over the same period in 2020 . • Inspection revenue increased 21 % over the prior quarter . • Received commitments for six additional manufacturing slots for advanced packaging lithography tool 1