AI Day1 LLC Tenders Full 12.5% Stake in Day One Biopharmaceuticals to Servier Detroit Inc.

On April 13, 2026, AI Day1 LLC, along with affiliated reporting persons Access Industries Holdings LLC, Access Industries Management, LLC, and Len Blavatnik, filed an amendment to their Schedule 13D regarding Day One Biopharmaceuticals, Inc. (DAWN). The filing discloses that on April 9, 2026, AI Day1 LLC tendered all of its 12,929,322 shares of common stock in response to a tender offer by Servier Detroit Inc. The offer price was $21.50 per share in cash. Prior to the tender, the reporting persons beneficially owned approximately 12.52% of the company's outstanding common stock. This transaction effectively marks the exit of the reporting persons' position in the issuer, subject to the successful completion of the tender offer terms. The reporting persons also held warrants to purchase an additional 827,586 shares. The filing was triggered by the material change in investment intent and the disposal of the equity stake through the tender process.