X0609 4 2026-08-19 false 0001459839 SI-BONE, Inc. SIBN 0001853089 Maheshwari Anshul false C/O SI-BONE, INC 471 EL CAMINO REAL, SUITE 101 SANTA CLARA CA 95050 false true false false Chief Op & Financial Officer true Common Stock 2026-08-19 4 S false 5747.00 19.55 D 246148.00 D Common Stock 2026-08-21 4 S false 11228.00 20.02 D 234920.00 D The sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan dated December 17, 2025. The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $19.50 to $19.67, 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 $20.00 to $20.05, 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 167,604 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 Pisetsky, Attorney-in-Fact for Anshul Maheshwari 2026-08-21