X0508 4 2026-01-08 false 0001459839 SI-BONE, Inc. SIBN 0001035986 DUNN JEFFREY W C/O SI-BONE, INC. 471 EL CAMINO REAL, SUITE 101 SANTA CLARA CA 95050 true false false false true Common Stock 2026-01-08 4 S false 20000.00 21.2753 D 80115.00 I by Trust Common Stock 10307.00 D The sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan dated May 7th, 2025. The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $20.84 to $21.84, 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 this footnote. Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012. Includes 10,307 shares issuable on settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive on shares of the Issuer's common stock. /s/ Michael A. Pisetsky, Attorney-in-Fact for Jeffrey W. Dunn 2026-01-12