Form 8-K · Current Report · Filed 2026-04-20
Onto Innovation to Acquire 27% Stake in Rigaku Holdings for $710 Million
Onto Innovation Inc. has entered into a definitive Share Purchase Agreement with Atom Investments, L.P., an affiliate of The Carlyle Group, to acquire 27% of the outstanding common stock of Rigaku Holdings Corporation for approximately $710 million. This acquisition aims to advance next-generation process control solutions for semiconductor manufacturing by integrating Onto Innovation's Ai Diffract analysis software with Rigaku's critical dimension small-angle X-ray scattering (CD-SAXS) platforms. The transaction is expected to close in the second half of 2026, subject to customary closing conditions, including regulatory approvals. In connection with the transaction, Onto Innovation has also entered into a commitment letter with Goldman Sachs Bank USA for a senior secured 364-day bridge term loan credit facility of up to $500 million to finance the acquisition and related fees and expenses.
- Filer
- Onto Innovation Inc. ONTO · NYSE
- Filed
- Accession
- 0001193125-26-164529
- CIK
- 0000704532
- Signal
- Medium impactTechnology
- Source
- Official filing on sec.gov ↗
Items reported
Reported Item
Market reaction
Close before filing
$290.76
Next session
-0.2%
Since filing
-11.1%
Latest close
$258.58
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Precedent
Previous filings from ONTO reporting the same item, with the next session's move:
Insider tape
Within 45 days of this filing, ONTO insiders reported 9 Form 4 transactions — net selling of $373K.
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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