BlackRock, Inc. Increases Stake in SI-BONE, Inc. to 6.9%

BlackRock, Inc. filed a Schedule 13G/A on April 24, 2026, disclosing a 6.9% ownership stake in SI-BONE, Inc. (SIBN). As of the event date on March 31, 2026, BlackRock beneficially owns 3,057,039 shares of common stock. This filing represents an increase in holdings compared to the previously reported position of zero shares, indicating a new or significantly restored significant position in the company. Of the total shares held, BlackRock reports sole voting power over 2,997,105 shares and sole dispositive power over the full 3,057,039 shares. The filing was submitted as Amendment No. 6, suggesting a continuation of regulatory reporting for this issuer. BlackRock certified that the shares were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of SI-BONE, Inc. The reporting entity is a parent holding company, with various subsidiaries identified in the filing's exhibits as the direct holders of the reported securities. No single person's interest exceeds five percent of the total outstanding common shares.