BlackRock, Inc. Increases Ownership in Avantor, Inc. to 8.7%

BlackRock, Inc. has filed a Schedule 13G/A amendment, disclosing an increase in its ownership of Avantor, Inc. common stock to 8.7%. The filing indicates that BlackRock now beneficially owns 59,049,575 shares, with sole voting power over 56,188,076 shares and sole dispositive power over all 59,049,575 shares. The filing also notes that various persons have the right to receive dividends or proceeds from the sale of the common stock, but no single person's interest exceeds 5% of the total outstanding shares. The amendment was signed by Spencer Fleming, Managing Director of BlackRock, Inc., and was effective as of October 17, 2025.