Welcome to our dedicated page for Onto Innovation SEC filings (Ticker: ONTO), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Onto Innovation Inc. (NYSE: ONTO) files a range of documents with the U.S. Securities and Exchange Commission that provide detailed insight into its semiconductor process control business. As a supplier of metrology, defect inspection, lithography and analytics systems to microelectronics device manufacturers, the company uses its SEC filings to describe its single operating segment, technology portfolio, geographic footprint and risk factors.
On this page, you can review Current Reports on Form 8‑K in which Onto Innovation reports material events. Recent 8‑K filings include disclosures about the agreement to acquire, and subsequent completion of the acquisition of, Semilab USA LLC, including the Equity Purchase Agreement, an amendment to that agreement and the mix of cash and common stock used as consideration. Other 8‑Ks furnish quarterly earnings releases, outlining revenue, margins, non‑GAAP measures and financial outlook, along with cautionary statements about forward‑looking information.
Onto Innovation also uses 8‑K and 8‑K/A filings to describe executive and governance‑related matters, such as the adoption of the Onto Innovation Nonqualified Deferred Compensation Plan and the material terms of a separation agreement with a former chief financial officer. These documents detail plan eligibility, deferral elections, vesting and distribution options, as well as severance payments and equity award treatment.
Through Stock Titan, investors can access Onto Innovation’s SEC filings as they are posted to EDGAR and use AI‑powered summaries to interpret complex disclosures. Long‑form documents such as annual reports on Form 10‑K and quarterly reports on Form 10‑Q, when available, can be analyzed for information on process control technologies, geographic operations, risk factors and non‑GAAP adjustments, while Form 4 and other insider transaction reports can be monitored to track equity activity by directors and officers.
BlackRock, Inc. filed Amendment No. 5 to Schedule 13G reporting its passive ownership in Onto Innovation Inc. (ONTO). BlackRock beneficially owns 5,039,082 shares of ONTO common stock, representing 10.3% of the class as of the event date 09/30/2025.
BlackRock reports sole voting power over 4,872,451 shares and sole dispositive power over 5,039,082 shares, with no shared voting or dispositive power. The filing certifies the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control. BlackRock notes various persons may have rights to dividends or sale proceeds, and no one person’s interest exceeds five percent of the outstanding shares.
Onto Innovation Inc. amended its agreement to acquire Semilab USA after a U.S. Department of Justice Second Request extended the antitrust review timeline. To help secure regulatory clearance, the parties agreed that Semilab’s Fourier-Transform infrared spectroscopy reflectometry systems business will be excluded from the deal and retained by the seller.
Under the amended terms, Onto Innovation will pay $432,310,000 in cash (subject to customary adjustments) and issue 641,771 shares of common stock, a reduction of approximately $50 million to approximately $495 million based on the Company’s June 27, 2025 share price. The excluded business represents approximately $13 million, or 10%, of estimated 2025 revenue for Semilab USA.
Onto Innovation expects the business it will acquire, excluding the carved-out operation, to generate approximately $120 million in annual revenue and to increase earnings per share by approximately 10% in the first year after closing. The company affirms its previously issued third quarter 2025 guidance and continues to anticipate completing the transaction in 2025, subject to Hart-Scott-Rodino clearance.
Ramil Yaldaei, Chief Operating Officer and director of ONTO INNOVATION INC. (ONTO), reported a change in beneficial ownership on 10/03/2025. The filing shows 594 shares of common stock were disposed of at a price of $143.71; the form explains these shares were withheld by the issuer to satisfy tax withholding obligations from the vesting of restricted or performance stock units. After the reported transaction, the reporting person beneficially owns 11,342 shares, which includes 145 shares acquired on 06/30/2025 under the companys Employee Stock Purchase Plan.
Brian K. Roberts, Chief Financial Officer of Onto Innovation Inc. (ONTO), was granted 21,175 restricted stock units (RSUs) on 09/02/2025. Each RSU represents a contingent right to one share of ONTO common stock and vests in three equal annual installments over three years from the award date, according to the filing. The reported beneficial ownership following the grant is 21,175 shares, held directly. The Form 4 was signed on 09/03/2025.
On 09/02/2025 Shirley Chen, listed as an officer (SVP, Customer Success) and director of Onto Innovation Inc. (ONTO), was granted 12,994 restricted stock units (RSUs). The Form 4 reports the acquisition at $0.00 per unit and shows 12,994 shares beneficially owned following the grant, held in a direct ownership form. The filing explains each RSU represents the contingent right to one share of ONTO common stock and that the RSUs vest annually in equal one-third increments over three years from the award date.
This disclosure is a routine insider equity compensation grant: it documents the number of RSUs awarded, the vesting schedule, and the reporting person’s relationship to the issuer. No exercise, sale, or derivative transactions are reported in this filing.