X0306 4 2022-02-16 false 0001459839 SI-BONE, Inc. SIBN 0001754765 Pisetsky Michael A C/O SI-BONE, INC. 471 EL CAMINO REAL, SUITE 101 SANTA CLARA CA 95050 false true false false SVP, Ops & Adm/Chief Legal Ofr Common Stock 2022-02-16 4 S false 126.00 20.3836 D 128273.00 D Common Stock 2022-02-16 4 S false 990.00 20.3836 D 127283.00 D Common Stock 2022-02-16 4 S false 878.00 20.3836 D 126405.00 D The sale reported on this Form 4 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale satisfies the tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person. Includes 89,501 shares issuable on the settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. /s/ Michael A. Pisetsky 2022-02-18