SCHEDULE 13G/A

SI-BONE Inc

Common Stock, par value $0.0001 per share · CUSIP: 825704109

Event date: 2025-06-30

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• OrbiMed Capital LLC

  Shares: 2,184,200.00 · Class: 5.1%

• OrbiMed Advisors LLC

  Shares: 394,779.00 · Class: 0.9%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.