X0508 4 2025-06-05 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 false Common Stock 2025-06-05 4 A false 8675.00 0.00 A 21211.00 D Common Stock 2025-06-05 4 S false 3377.00 19.0509 D 17354.00 D Common Stock 112413.00 I by Trust Reflects 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. The shares subject to the restricted stock unit will vest 100% upon the earlier of (i) the next annual general meeting of the stockholders of the Company or (ii) the date one year from the Vesting Commencement Date, subject to the Reporting Person's continuous service as a member of the Company's Board of Directors until such date. The sale reported on this Form 4 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale satisfies the tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person. This transaction was executed in multiple trades at prices ranging from $18.90 USD to $19.29 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. Includes 11,940 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. /s/ Michael A. Pisetsky, Attorney-in-Fact for Jeffrey W. Dunn 2025-06-06