X0609 4 2026-11-04 false 0001459839 SI-BONE, Inc. SIBN 0001218802 FRANCIS LAURA false C/O SI-BONE, INC. 471 EL CAMINO REAL, SUITE 101 SANTA CLARA CA 95134 true true false false Chief Executive Officer true Common Stock 2026-11-04 4 S false 75000.00 25.3019 D 304256.00 I by Trust Common Stock 368129.00 D The sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan dated June 13, 2025. This transaction was executed in multiple trades at prices ranging from $25.00 USD to $25.90 USD; the price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide Issuer, any security holder 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 this footnote. Shares held by The David & Laura Joint Rev Tr. Includes 355,697 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 2026-11-06