8-K: Onto Innovation Amends Semilab Acquisition, Reduces Price

Onto Innovation Inc. has amended its agreement to acquire Semilab USA LLC, excluding the Fourier-Transform infrared spectroscopy reflectometry systems (EIR) business, resulting in a reduced purchase price and an extended regulatory review period.

Summary

• Onto Innovation Inc. entered into an Equity Purchase Agreement on June 27, 2025, to acquire Semilab USA LLC.
• On September 25, 2025, the company and Semilab International Zrt. received a Second Request from the U.S. Department of Justice (DOJ) regarding the transaction, extending the HSR Act waiting period.
• To increase the likelihood of a timely closing, an amendment to the Purchase Agreement was signed on October 9, 2025, to exclude the Fourier-Transform infrared spectroscopy reflectometry systems (EIR) business from the transaction.
• The EIR Business represents approximately $13 million, or 10%, of estimated 2025 revenue for Semilab USA.
• The amended purchase price is $432,310,000 in cash and 641,771 shares of Onto Innovation's common stock.
• This revised price represents a reduction of approximately $50 million, bringing the total value to approximately $495 million based on the closing value of Onto Innovation's common stock on June 27, 2025.
• The parties intend to withdraw their existing HSR Act filings and submit new notification and report forms with the DOJ and the Federal Trade Commission (FTC) for the amended transaction.
• Closing of the transaction remains subject to the expiration or termination of any waiting period applicable under the HSR Act.
• Hungarian foreign direct investment approval for the transaction was received in September 2025.

Sentiment

Score: 5

Explanation: The sentiment is neutral to slightly negative. While the company affirmed its Q3 guidance and still expects EPS accretion from the amended deal, the regulatory hurdles (DOJ Second Request) and the resulting divestiture of a portion of the acquired business (EIR) introduce delays and reduce the overall strategic scope of the acquisition. The transaction is progressing but with significant modifications and extended timelines.

Positives

• Hungarian foreign direct investment approval was received in September 2025, satisfying one key closing condition.
• The acquired business, excluding the EIR Business, is expected to generate approximately $120 million in annual revenue.
• The transaction is expected to increase earnings per share by approximately 10% in the first year following the close of the transaction.
• The company affirmed its third-quarter guidance, initially provided on August 7, 2025.
• The parties intend to continue working cooperatively with the DOJ and/or the FTC to obtain regulatory clearance as expeditiously as possible.

Negatives

• The U.S. Department of Justice issued a Second Request for additional information, significantly extending the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act.
• The Fourier-Transform infrared spectroscopy reflectometry systems (EIR) business, representing approximately $13 million (10%) of Semilab USA's estimated 2025 revenue, was excluded from the acquisition.
• The purchase price was reduced by approximately $50 million due to the exclusion of the EIR business, indicating a smaller scope for the acquisition.
• The need to withdraw and resubmit HSR Act filings introduces further delays and regulatory uncertainty for the transaction.

Risks

• One or more closing conditions to the Transaction, including certain regulatory approvals, may not be satisfied or waived on a timely basis or otherwise.
• A governmental entity may prohibit, delay, or refuse to grant approval for the consummation of the proposed Transaction, or may require conditions, limitations, or restrictions in connection with such approvals.
• The risk that the Transaction may not be completed in the time frame expected by the Company, or at all.
• Unexpected costs, charges, or expenses resulting from the Transaction.
• Failure to realize the anticipated benefits of the Transaction, including as a result of delay in completing the Transaction or integrating the acquired business with the business of the Company.
• Difficulties and delays in achieving revenue and cost synergies anticipated to be realized from the Transaction.
• The occurrence of any event that could give rise to termination of the Transaction.
• Evolving legal, regulatory, and tax regimes.
• Changes in economic, financial, political, and regulatory conditions, in the United States and elsewhere, and other factors that contribute to uncertainty and volatility, natural and man-made disasters, civil unrest, pandemics, geopolitical uncertainty, and conditions that may result from legislative, regulatory, trade, and policy changes.
• Risks related to disruption of management time from ongoing business operations due to the Transaction.
• The risk that the Transaction and its announcement could have an adverse effect on the ability of the Company or the acquired business to retain customers and retain and hire key personnel and maintain relationships with customers, suppliers, employees, stockholders, strategic partners and other business relationships and on their operating results and business generally.
• The Company's ability to deploy its resources to improve its position in its core markets.
• Its ability to weather difficult economic environments.
• Its ability to open new market opportunities and target high-margin markets.
• The strength/weakness of the back-end and/or front-end semiconductor market segments.
• Fluctuations in customer capital spending.
• The Company's ability to effectively manage its supply chain and adequately source components from suppliers to meet customer demand.
• Its ability to adequately protect its intellectual property rights and maintain data security.
• Its ability to effectively maneuver global trade issues and changes in trade and export license policies.
• The Company's ability to maintain relationships with its customers and manage appropriate levels of inventory to meet customer demands.
• The Company's ability to successfully integrate acquired businesses and technologies.

Future Outlook

The Company continues to anticipate that the Transaction will be completed in 2025. The business to be acquired, excluding the EIR Business, is expected to generate approximately $120 million in annual revenue and will increase earnings per share by approximately 10% in the first year following the close of the transaction. The Company also affirmed its third-quarter guidance, initially provided on August 7, 2025.

Management Comments

• We intend to withdraw our existing HSR Act filings with the DOJ, and submit a notification and report form with the DOJ and the Federal Trade Commission (the FTC) with respect to the Transaction as amended.
• We intend to continue working cooperatively with the DOJ and/or the FTC to obtain regulatory clearance for the Transaction as expeditiously as possible.

Industry Context

The semiconductor industry relies heavily on advanced metrology systems for manufacturing and testing. Acquisitions like this aim to consolidate technology and market share. Regulatory scrutiny, especially from antitrust bodies like the DOJ and FTC, is common in significant M&A activities within critical technology sectors, often leading to divestitures or modifications to address competition concerns. The exclusion of the EIR business suggests a specific area of competitive overlap or concern identified by the DOJ, impacting the strategic scope of the acquisition within the metrology market.

Stakeholder Impact

• Shareholders: Face potential delays in realizing the full benefits of the acquisition and a reduced scope of the acquired assets, which could impact stock performance. However, the amended deal is still expected to be accretive to EPS.
• Employees (Semilab USA): Employees associated with the Fourier-Transform infrared spectroscopy reflectometry systems (EIR) business will remain with Semilab International Zrt. and its affiliates, not transferring to Onto Innovation.
• Customers: Customers of the EIR product line may experience uncertainty regarding the future ownership and support of these products, as they will remain with Semilab.
• Regulatory Bodies (DOJ/FTC): Will continue their review of the amended transaction, requiring further cooperation and information from both companies.

Next Steps

• Onto Innovation and Semilab to substantially comply with the DOJ's Second Request for additional information and documentary material.
• Withdraw existing HSR Act filings with the DOJ and submit new notification and report forms with the DOJ and FTC for the amended transaction.
• Continue working cooperatively with the DOJ and/or FTC to obtain regulatory clearance for the amended transaction as expeditiously as possible.
• Complete the transaction in 2025, as anticipated by the company.

Key Dates

Recommendation

The amendment to the acquisition agreement, driven by a DOJ Second Request and resulting in a divestiture of a portion of Semilab's business, introduces regulatory uncertainty and a delay in closing. While the company still anticipates EPS accretion from the *amended* deal and affirmed its Q3 guidance, the reduced scope and extended timeline are headwinds. Investors should hold to monitor the progress of regulatory approvals and the eventual closing of the modified transaction before making further investment decisions.

Keywords

Semiconductor, Metrology, Acquisition, M&A, HSR Act, DOJ, FTC, Regulatory Approval, Onto Innovation, Semilab