Onto Innovation to buy 27% of Rigaku for $710 million in share purchase deal
Onto Innovation agreed to acquire 61,123,436 shares, or 27%, of Rigaku Holdings from an affiliate of The Carlyle Group for about $710 million, with closing expected in the second half of 2026. The company also obtained a commitment for a $500 million 364-day bridge loan from Goldman Sachs Bank USA to help finance the deal, which adds a large investment and new debt financing for shareholders to weigh.
Key points
- Purchase price of approximately $710 million for 27% of Rigaku common stock, agreed April 21, 2026 (Tokyo time)
- Transaction expected to close in the second half of 2026, subject to regulatory approvals and customary conditions
- Bridge Commitment Letter with Goldman Sachs Bank USA provides up to $500 million senior secured 364-day term loan
- Company expects to account for the minority stake under the fair value option and not consolidate Rigaku results; termination fee of 2% of the purchase price applies in certain cases
The filing
Written by AI (Anthropic Claude, claude-haiku-5-5) on Nov 8, 2026, 1:17 AM ET, from the text of the filing and its press-release exhibits only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on April 20, 2026.
Briefs are written by AI from the filing text (each brief's own page names the model) and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the model's reading of the filing for shareholders, not a price forecast. Not investment advice.