X0609 4 2026-04-07 false 0001459839 SI-BONE, Inc. SIBN 0001239182 Hinckley Greg K false C/O SI-BONE, INC. 471 EL CAMINO REAL, SUITE 101 SANTA CLARA CA 95050 true false false false false Common Stock 2026-04-07 4 M false 3085.00 5.94 A 105135.00 D Common Stock 75603.00 D Stock Option (Right to Buy) 5.94 2026-04-07 4 M false 3085.00 0.00 D 2027-03-01 Common Stock 3085.00 0.00 D Includes 8,675 shares issuable on the settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. Shares held by Gregory K. Hinckley and Mary C. Hinckley as Community Property with the Right of Survivorship. The shares subject to the option vest in equal monthly installments over three years commencing on October 17, 2018, subject to Reporting Person's continued service through each relevant vesting date. /s/ Michael A. Pisetsky, Attorney-in-Fact for Gregory K. Hinckley 2026-04-09