X0306 4 2021-01-05 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 GC & Chief Compliance Officer Common Stock 2021-01-05 4 A false 28750.00 0.00 A 77053.00 D Reflects 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. The shares subject to the restricted stock unit will vest over four years beginning on January 1, 2021 and will be released in quarterly installments commencing on May 15, 2021, subject to the Reporting Person's continued service through each relevant vesting date. Includes 61,998 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 2021-01-07