X0508 4 2025-11-11 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 2025-11-11 4 S false 23148.00 18.95 D 10307.00 D Common Stock 2025-11-11 4 M false 23148.00 4.32 A 33455.00 D Common Stock 2025-11-11 4 M false 56852.00 4.32 A 90307.00 D Common Stock 2025-11-11 4 S false 56852.00 18.95 D 10307.00 D Common Stock 118874.00 I by Trust Stock Option (Right to Buy) 4.32 2025-11-11 4 M false 23148.00 0.00 D 2026-07-26 Common Stock 23148.00 58093.00 D Stock Option (Right to Buy) 4.32 2025-11-11 4 M false 56852.00 0.00 D 2026-07-26 Common Stock 56852.00 1241.00 D The sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan dated May 7th, 2025. Includes 10,307 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. Reflects the transfer of shares from the Reporting Person to The Jeffrey W. Dunn Living Trust dated May 17, 2012. Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012. The shares subject to the option vest in equal monthly installments over four years commencing on the vesting commencement date, subject to Reporting Person's continued service through each relevant vesting date. /s/ Michael A. Pisetsky, Attorney-in-Fact for Jeffrey W. Dunn 2025-11-13