Onto Innovation to acquire Semilab's materials analysis business for ~$545M

ONTO INNOVATION INC.

Total consideration of $475M cash and 706,215 shares of ONTO stock (~$545M total based on June 27 close).
Acquisition adds four product lines for inline wafer contamination monitoring and materials interface characterization.
Portfolio has grown ~20% CAGR since 2021, projected to generate ~$130M annual revenue in 2025.
Expected to be immediately accretive to gross and operating margins, increasing non-GAAP EPS by >10% in first year.
Expected close in H2 2025, subject to US and Hungarian regulatory approvals; Q2 2025 guidance reaffirmed.

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