Simpson Thacher is representing Onto Innovation Inc. in connection with its entry into a definitive agreement to acquire the materials analysis business of Semilab International for $475 million in cash (subject to certain customary purchase price adjustments) and 706,215 shares of Onto Innovation’s common stock. Based on the closing price of Onto Innovation’s common stock on June 27, 2025, the total transaction value is approximately $545 million. The transaction is subject to U.S. and Hungarian regulatory approvals and is expected to close in the second half of 2025.
Onto Innovation has a breadth of offerings across the semiconductor value chain and is a leader in process control, with a portfolio of leading edge-technologies. The acquisition aligns with Onto Innovation’s strategy to excel in high-growth, high-margin segments of the semiconductor value chain, particularly where device complexity is accelerating, such as the production of chips required for AI applications.
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