GV 2021, L.P. Acquires Additional Shares in Prime Medicine, Inc.

SEC Filing 4 (0001415889-25-021025)

On August 1, 2025, GV 2021, L.P. acquired 1,500,000 shares of Common Stock in Prime Medicine, Inc. at a price of $3.30 per share, as part of an underwritten public offering that closed on the same date. Following this transaction, GV 2021, L.P. owns a total of 3,262,440 shares in Prime Medicine, Inc. The securities are directly beneficially owned by GV 2021, L.P., with Alphabet Inc. and its subsidiaries potentially having indirect beneficial ownership. Each of the entities involved disclaims beneficial ownership except to the extent of their pecuniary interest. The filing was signed by Inga Goldbard, General Counsel of GV 2021 GP, L.L.C., GV 2021 GP, L.P., and GV 2021, L.P., as well as Kathryn W. Hall, Assistant Secretary of Alphabet Inc.