X0306 4 2019-01-15 0 0001459839 SI-BONE, Inc. SIBN 0001754765 Pisetsky Michael A C/O SI-BONE, INC. 471 EL CAMINO REAL, SUITE 101 SANTA CLARA CA 95050 0 1 0 0 GC & Chief Compliance Officer Common Stock 2019-01-15 4 A 0 11400 0.00 A 18314 D Stock Option (right to buy) 22.00 2019-01-15 4 A 0 24700 0.00 A 2029-01-15 Common Stock 24700 24700 D Reflects shares issuable on settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one shares of the Issuer's common stock. The shares subject to the restricted stock unit vest in equal quarterly installments over four years commencing on January 15, 2019, subject to the Reporting Person's continued service through each relevant vesting date. The shares subject to the option vest in equal monthly installments over four years commencing on January 15, 2019, subject to Reporting Person's continued service through each relevant vesting date. /s/ Michael A. Pisetsky 2019-01-17