Transaction Details

Footnotes

On December 11, 2025, Flagship Pioneering, Inc. ("Flagship Pioneering") exercised options to purchase 23,853 shares of the Issuer's Common Stock at $10.90 per share, which options were set to expire on February 23, 2026. | The securities are held directly by Flagship Pioneering. Flagship Pioneering is contractually obligated to transfer and/or remit the proceeds of any sale of shares to Flagship Fund IV, L.P. ("Flagship Fund IV"). The reporting person is the CEO and sole stockholder of Flagship Pioneering and disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein. | The securities are held directly by Flagship Fund IV. Flagship Ventures Fund IV General Partner LLC ("Flagship Fund IV GP") is the general partner of Flagship Fund IV. The reporting person is the sole manager of Flagship Fund IV GP and disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein. | The securities are held directly by Flagship Ventures Fund IV-Rx, L.P. ("Flagship Fund IV-Rx"). Flagship Fund IV GP is the general partner of Flagship Fund IV-Rx. The reporting person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein. | The options were fully vested and exercisable.