Onto Innovation to Acquire 27% Stake in Rigaku for $710M

Onto Innovation Inc. has entered into a Share Purchase Agreement to acquire 61,123,436 shares, representing a 27% stake, of Rigaku Holdings Corporation from Atom Investments, L.P. The aggregate purchase price for this acquisition is approximately $710 million. The transaction is anticipated to close in the second half of 2026, subject to customary closing conditions, including regulatory approvals.