SCHEDULE 13G/A 0001085146-22-000567 0001345929 XXXXXXXX LIVE 4 Common Stock 03/31/2025 0001459839 SI-BONE, Inc. 825704109 471 El Camino Real Suite 101 Santa Clara CA 95050 Rule 13d-1(b) BROWN ADVISORY INC MD 2669868 0 0 3219079 3219079 N 7.6 HC BROWN INVESTMENT ADVISORY & TRUST CO MD 18203 0 0 18203 18203 N 0 BK BROWN ADVISORY LLC MD 2650771 0 0 3198548 3198548 N 7.5 IA SIGNATURE FINANCIAL MANAGEMENT, INC. VA 894 0 0 2328 2328 N 0 IA SI-BONE, Inc. 471 El Camino Real Suite 101 Santa Clara, CALIFORNIA 95050 BROWN ADVISORY INC BROWN INVESTMENT ADVISORY & TRUST CO BROWN ADVISORY LLC SIGNATURE FINANCIAL MANAGEMENT, INC. 901 SOUTH BOND STREET SUITE #400 Baltimore, Maryland 21231 BROWN ADVISORY INC - MARYLAND BROWN INVESTMENT ADVISORY & TRUST CO - MARYLAND BROWN ADVISORY LLC - MARYLAND SIGNATURE FINANCIAL MANAGEMENT, INC. - VIRGINIA N BK IA HC 3,219,079 7.6 BROWN ADVISORY INC - 2,669,868 BROWN INVESTMENT ADVISORY & TRUST CO - 18,203 BROWN ADVISORY LLC - 2,650,771 SIGNATURE FINANCIAL MANAGEMENT, INC. - 894 BROWN ADVISORY INC - 0 BROWN INVESTMENT ADVISORY & TRUST CO - 0 BROWN ADVISORY LLC - 0 SIGNATURE FINANCIAL MANAGEMENT, INC. - 0 BROWN ADVISORY INC - 0 BROWN INVESTMENT ADVISORY & TRUST CO - 0 BROWN ADVISORY LLC - 0 SIGNATURE FINANCIAL MANAGEMENT, INC. - 0 BROWN ADVISORY INC - 3,219,079 BROWN INVESTMENT ADVISORY & TRUST CO - 18,203 BROWN ADVISORY LLC - 3,198,548 SIGNATURE FINANCIAL MANAGEMENT, INC. - 2,328 Y N The total securities being reported are beneficially owned by investment companies and other managed accounts of direct/indirect subsidiaries of BROWN ADVISORY INC (listed above). These subsidiaries may be deemed to be beneficial owners of the reported securities because applicable investment advisory contracts provide voting and/or investment power over securities. N BROWN ADVISORY INC is a parent holding company filing this schedule on behalf of the following subsidiaries pursuant to Rule 13d-1(b)(1)(ii)(G) under the Securities Exchange Act of 1934: BROWN INVESTMENT ADVISORY & TRUST CO - BK (Bank) BROWN ADVISORY LLC - IA (Investment Adviser) SIGNATURE FINANCIAL MANAGEMENT, INC. - IA (Investment Adviser) Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. BROWN ADVISORY INC Brett D. Rogers 04/18/2025 BROWN INVESTMENT ADVISORY & TRUST CO Brett D. Rogers 04/18/2025 BROWN ADVISORY LLC Brett D. Rogers 04/18/2025 SIGNATURE FINANCIAL MANAGEMENT, INC. Brett D. Rogers 04/18/2025