Onto Innovation to Acquire Semilab International’s Materials Analysis Business for $545 Million

Onto Innovation announced on June 30, 2025, a definitive agreement to acquire the materials analysis business of Semilab International for $475 million in cash and 706,215 shares of Onto Innovation common stock, valued at approximately $545 million based on the stock’s closing price on June 27, 2025.
The acquisition includes four product lines focused on inline wafer contamination monitoring and materials interface characterization, addressing growing demand for advanced materials analysis in semiconductor manufacturing, particularly for advanced nodes, advanced packaging, and compound semiconductor applications. The portfolio has achieved a 20% compound annual growth rate since 2021 and is expected to generate approximately $130 million in annual revenue in 2025. The transaction is projected to add over $130 million to Onto Innovation’s annual revenue, be immediately accretive to gross and operating margins, and increase non-GAAP earnings per share by more than 10% in the first year following the transaction’s close.
Onto Innovation plans to integrate its Ai Diffract modeling engine and advanced dimensional metrology to enhance the acquired portfolio’s capabilities, aiming to improve yield learning for devices in packaging, power semiconductors, and advanced nodes. The acquisition aligns with Onto Innovation’s strategy to target high-grow...