ONTO INNOVATION INC. 10-Q

Item 2. Unregistered Sales of Equi ty Securities and Use of Proceeds In February 2024, the Onto Innovation Board of Directors approved a new share repurchase authorization, which allows the Company to repurchase up to $200 million worth of shares of its common stock. There were no shares of common stock repurchased under this authorization during the three months ended March 31, 2026. There was $99.9 million available for future share repurchases under this share repurchase authorization at March 31, 2026. For further information, see Note 13, “Share Repurchase Authorization,” of the Notes to the Condensed Consolidated Financial Statements. In addition to our share repurchase program, we withhold common stock shares associated with net share settlements to cover tax withholding obligations upon the vesting of restricted stock unit awards under the Company’s equity incentive program. 24 Table of Contents The following table provides details of common stock purchased during the three months ended March 31, 2026 (in thousands, except per share data): Period Total Number of Shares Purchased Average Price Paid per Share Total Number of Shares Purchased as Part of Publicly Announced Program Maximum Approximate Dollar Value of Shares that May Yet be Purchased Under the Program (in thousands, except for per share data) Jan 4, 2026 to Jan 31, 2026 — $ — — $ 99,935 Feb 1, 2026 to Feb 28, 2026 17 $ 217.23 — $ 99,935 Mar 1, 2026 to Mar 31, 2026 14 $ 211.69 — $ 99,935 Three months ended March 31, 2026 31 $ 214.78 — Item 3. Defaults Upo n Senior Securities None. Item 4. Mine Saf ety Disclosures None.