X0306 4 2023-01-11 1 0001623715 Imago BioSciences, Inc. IMGO 0001620743 KEATING LAURIE C/O IMAGO BIOSCIENCES, INC. 303 TWIN DOLPHIN DRIVE, 6TH FLOOR REDWOOD CITY CA 94065 1 0 0 0 Stock Option (Right to Buy) 22.76 2023-01-11 4 D 0 23809 D 2031-11-16 Common Stock 23809 0 D Stock Option (Right to Buy) 15.65 2023-01-11 4 D 0 11904 D 2032-05-31 Common Stock 11904 0 D On November 19, 2022, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement"), by and among the Issuer, Merck Sharpe & Dohme LLC and M-Inspire Merger Sub, Inc., providing for the merger of M-Inspire Merger Sub, Inc. with and into the Issuer (the "Merger"), with the Issuer surviving as a wholly owned subsidiary of Merck Sharpe & Dohme LLC. Pursuant to the Merger Agreement, each option to purchase common stock of the Issuer, whether vested or unvested, outstanding immeditately prior to the effective time of the Merger, were exchanged for a cash payment equal to (x) the aggregate number of shares of the Issuer's common stock subject to such option, multiplied by (y) the excess, if any, of $36.00 over the per share exercise price under such option. /s/Hugh Y. Rienhoff, as Attorney-in-fact for Laurie Keating 2023-01-11