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.
ONTO Innovation Inc. (ONTO) disclosed that its Chief Executive Officer and director, Michael Plisinski, made a bona-fide charitable gift of company stock. On 12/24/2025, he transferred 25,000 shares of ONTO common stock as a gift to a Donor Advised Fund at a reported price of $0.0, reflecting the non-cash nature of the donation. After this transaction, he beneficially owned 162,161 shares of ONTO common stock directly.
ONTO Innovation Inc. executive files Form 4 for tax withholding transaction
An executive officer of ONTO Innovation Inc. (ONTO), serving as EVP, Product Solutions Group, reported a stock transaction dated 12/02/2025. The filing shows that 3,183 shares of common stock were disposed of at a price of $154.01 per share in a transaction coded "F," which indicates shares withheld by the company to cover tax obligations on previously granted restricted stock units or performance stock units that vested. Following this withholding event, the executive beneficially owned 23,915 shares of ONTO common stock. This total includes 145 shares purchased on June 30, 2025 under the company’s Employee Stock Purchase Plan.
Onto Innovation Inc. reported that its board has adopted a new Nonqualified Deferred Compensation Plan, effective January 1, 2026. The plan is an unfunded, nonqualified deferred compensation arrangement intended to comply with Section 409A of the Internal Revenue Code and is available to selected employees and non-employee directors.
Eligible employee participants may elect to defer up to 75% of their annual base salary and up to 100% of their annual bonus, performance share units, and restricted stock units. Eligible non-employee directors may defer up to 100% of their annual retainer, meeting fees, and restricted stock units. Participant contributions and any discretionary company contributions are fully vested and are adjusted based on hypothetical investment returns tied to investment options chosen by the participant.
Distributions of participant contributions can be paid in a lump sum or in annual installments over two to five years at times elected by the participant, or over two to ten years following separation from service. Distributions of company contributions are made in a lump sum or annual installments over two to ten years following separation from service, as elected by the participant in accordance with the plan terms.
Onto Innovation Inc. has filed a shelf registration statement on Form S-3 to allow the resale by Semilab International Zrt. of up to 641,771 shares of Onto common stock. These shares were issued as stock consideration in Onto’s acquisition of all outstanding membership interests of Semilab USA LLC, alongside
Onto is not selling any shares in this offering and will not receive proceeds from any resale of the registered shares. The selling stockholder currently beneficially owns 641,771 shares, representing
The prospectus describes multiple permitted sale methods for the selling stockholder, including exchange trades, privately negotiated transactions, underwritten offerings, hedging and short sales, all conducted from time to time under Rule 415. Onto continues to operate as a global provider of metrology, inspection and lithography systems for semiconductor and other specialty device markets, with its common stock listed on the NYSE under the symbol ONTO.
Onto Innovation Inc. has completed its previously announced acquisition of Semilab USA LLC. The company bought all outstanding membership interests for
The stock portion of the consideration was issued to the seller in a private, unregistered transaction relying on Section 4(a)(2) of the Securities Act, with the seller representing accredited investor status and an investment intent. Onto Innovation also announced the closing and an update to its fourth quarter
Onto Innovation (ONTO) reported Q3 results with revenue of $218.2 million, down from $252.2 million a year ago, as sales to DRAM, NAND and certain specialty/advanced packaging customers softened. Gross profit was $110.6 million and operating income was $23.7 million. Net income came in at $28.2 million, or $0.57 diluted EPS.
Year to date, revenue reached $738.4 million versus $723.4 million last year, while net income was $126.2 million, or $2.57 diluted EPS. The company ended the quarter with $603.1 million in cash and equivalents and $380.8 million in marketable securities, reflecting strong liquidity. Operating cash flow was $233.3 million for the nine-month period.
Onto amended its agreement to acquire Semilab USA: consideration is now $432.3 million in cash and 641,771 shares (total value about $495 million based on June 27, 2025 pricing) after excluding Semilab’s FTIR reflectometry systems business; both parties received a DOJ Second Request on September 25, 2025. The company repurchased $75.0 million of stock year to date and recorded $38.6 million in restructuring and other charges for the nine months. Revenue mix in Q3 was 80% systems and software, 11% parts, and 9% services; Taiwan, South Korea and the U.S. were the largest regions.
Onto Innovation Inc. announced results for its fiscal third quarter ended September 27, 2025, via a company news release. The announcement was provided through a furnished investor update attached as Exhibit 99.1.
The company notes the information is furnished, not filed, and it may only be incorporated by reference if specifically stated in a future filing. Onto Innovation’s common stock trades on the New York Stock Exchange under the symbol ONTO.
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
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