X0306 4 2023-01-03 0 0001623715 Imago BioSciences, Inc. IMGO 0001861069 Tapper Amy E. C/O IMAGO BIOSCIENCES, INC. 303 TWIN DOLPHIN DRIVE, 6TH FLOOR REDWOOD CITY CA 94065 0 1 0 0 See Remarks Common Stock 2023-01-03 4 M 0 7482 2.52 A 127315 D Common Stock 2023-01-03 4 M 0 12400 4.2 A 139715 D Common Stock 2023-01-03 4 M 0 1379 22.76 A 141094 D Stock Option (Right to buy) 2.52 2023-01-03 4 M 0 7482 0 D 2021-01-01 2027-03-28 Common Stock 7482 750 D Stock Option (Right to Buy) 4.2 2023-01-03 4 M 0 12400 0 D 2031-02-04 Common Stock 12400 11409 D Stock Option (Right to Buy) 22.76 2023-01-03 4 M 0 1379 0 D 2031-11-16 Common Stock 1379 90121 D Reflects the adjusted total which includes the purchase of 786 shares under the Imago Employee Stock Purchase Plan on November 30, 2022. One forty-eighth (1/48th) of the shares initially subject to the option will vest on each monthly anniversary measured from November 12, 2020 (the "Vesting Commencement Date"), so that 100% of the shares subject to the option will be fully vested and exercisable as of the fourth anniversary of the Vesting Commencement Date, subject to the Reporting Person's continued service through each vesting date. 25% of the shares subject to the option vest on the first anniversary measured from November 17, 2021 (the "Vesting Commencement Date"), and 1/48th of the total number of shares vest monthly thereafter, such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date. /s/ Hugh Rienhoff, as Attorney-in-Fact for Amy E. Tapper 2023-01-05