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Form 8-K · Current Report · Filed 2025-10-10

Onto Innovation Inc. Amends Acquisition Agreement Excluding EIR Business

On October 9, 2025, Onto Innovation Inc. amended its Equity Purchase Agreement with Semilab USA LLC to exclude the Fourier-Transform infrared spectroscopy reflectometry systems business. This amendment reduces the purchase price by approximately $50 million to $495 million and is subject to regulatory approvals. The Company expects the acquisition, excluding the EIR Business, to add approximately $120 million in annual revenue and increase earnings per share by about 10% in the first year following the close of the transaction.

Filer
Onto Innovation Inc. ONTO · NYSE
Filed
Accession
0001193125-25-236464
CIK
0000704532
Signal
Medium impactTechnology

Items reported

Item 1.01

Entry into a Material Definitive Agreement

New Major Contract
Item 7.01

Regulation FD Disclosure

Regulation FD Disclosure
Item 9.01

Financial Statements and Exhibits

Exhibits Furnished

Market reaction

Close before filing

$136.60

Next session

-5.2%

Since filing

+89.3%

Latest close

$258.58

What happened, not what will happen — closing prices around the filing date.

Precedent

Previous filings from ONTO reporting the same item, with the next session's move:

About Onto Innovation Inc.

Onto Innovation Inc. is a leading company specializing in the development and provision of comprehensive metrology and inspection solutions for the semiconductor industry. Its primary function is to provide advanced analysis tools that ensure semiconductor manufacturers maintain high levels of quality and performance in their products. Onto Innovation's technology enables precise measurements and inspections, critical in the production of various electronic components including memory devices, logic chips, and power management systems. Notable for its cutting-edge technology, Onto Innovation’s systems are pivotal in the fabrication of nanoscale devices. The company serves a wide market including foundries, integrated device manufacturers (IDMs), and research institutions, impacting sectors such as consumer electronics, automotive, and telecommunications. With an ongoing evolution in electronics and the push for miniaturization, Onto Innovation plays a crucial role. In the financial market, Onto Innovation Inc. stands out as a key player in the semiconductor supply chain, known for its innovation and contributions to the emerging trends in semiconductor technology. Its market significance is underscored by its ability to adapt to the fast-paced advancements in the semiconductor industry, making it a critical enabler of future technological advancements.

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