X0508 4 2026-01-02 false 0001459839 SI-BONE, Inc. SIBN 0001210230 RECUPERO ANTHONY J C/O SI-BONE, INC. 471 EL CAMINO REAL, SUITE 101 SANTA CLARA CA 95050 false true false false President, Commercial Ops false Common Stock 2026-01-02 4 S false 1948.00 19.6053 D 266196.00 D Common Stock 2026-01-02 4 S false 1729.00 19.6372 D 264467.00 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. The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $19.37 to $19.82, inclusive. The Reporting Person undertakes to provide the Issuer, any securityholder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in these footnotes. The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $19.44 to $19.81, inclusive. The Reporting Person undertakes to provide the Issuer, any securityholder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in these footnotes. Includes 126,535 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 Anthony J. Recupero 2026-01-06