X0306 4 2019-07-24 false 0001459839 SI-BONE, Inc. SIBN 0001218802 FRANCIS LAURA C/O SI-BONE, INC. 471 EL CAMINO REAL, SUITE 101 SANTA CLARA CA 95050 false true false false Chief Financial Officer Common Stock 2019-07-24 4 A false 20000.00 0.00 A 90039.00 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 August 15, 2019, subject to the Reporting Person's continued service through each relevant vesting date. Includes 43,653 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. /s/ Michael A. Pisetsky, Attorney-in-Fact for Laura A. Francis 2019-07-26