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AI brief of an SEC Form 8-K · Onto Innovation (ONTO)

Onto Innovation amends Semilab deal, cuts price to $495 million and drops EIR business

Mixed Impact 4 of 5 m&a Written later

Onto Innovation amended its Semilab USA acquisition agreement on October 9, 2025, removing the EIR business, which the seller will keep, and lowering the purchase price by about $50 million to about $495 million. The U.S. Department of Justice issued a Second Request on September 25, 2025, which extends the antitrust review, and the company still expects the transaction to close in 2025. The company also affirmed its third quarter guidance first given on August 7, 2025.

Key points

  • Amendment dated October 9, 2025 excludes the EIR business, about $13 million or 10% of estimated 2025 Semilab USA revenue, which the seller will retain.
  • Purchase price is $432,310,000 in cash plus 641,771 shares of common stock, about $495 million based on the June 27, 2025 closing value.
  • DOJ Second Request received September 25, 2025 extends the HSR Act waiting period; the company expects the transaction to be completed in 2025.
  • Company expects the business to be acquired, excluding EIR, to generate about $120 million in annual revenue and raise earnings per share about 10% in the first year after closing.

The filing

CompanyOnto Innovation (ONTO)
Form8-K, current report
Filed with the SECOct 10, 2025, 9:00 AM ET
Accession number0001193125-25-236464

Items reported: 1.01 Material Definitive Agreement7.01 Regulation FD Disclosure

Read the filing on SEC.gov ↗

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 October 10, 2025.

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.