X0306 4 2020-01-14 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 2020-01-14 4 M false 3000.00 4.32 A 53013.00 D Common Stock 2020-01-14 4 S false 3000.00 21.715 D 50013.00 D Common Stock 2020-01-15 4 S false 292.00 21.3103 D 49721.00 D Stock Option (Right to Buy) 4.32 2020-01-14 4 M false 3000.00 0.00 D 2026-07-26 Common Stock 3000.00 26038.00 D The sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan. The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $21.25 to $22.15, inclusive. 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 40,980 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 option vest in equal monthly installments over four years commencing on vesting commencement date, subject to Reporting Person's continued service through each relevant vesting date. /s/ Michael A. Pisetsky 2020-01-16