Woodline Partners LP Acquires 5.5% Stake in Black Rock Coffee Bar, Inc.

On May 15, 2026, Woodline Partners LP filed a Schedule 13G with the SEC, reporting a new 5.5% stake in Black Rock Coffee Bar, Inc. (BRCB). The San Francisco-based investment adviser disclosed beneficial ownership of 955,820 shares of Class A Common Stock as of the event date of March 31, 2026. This position is held directly by Woodline Master Fund LP and Woodline Spire Master Fund LP, for which Woodline Partners LP serves as the investment adviser. The filing indicates that the reporting person has sole voting and dispositive power over all 955,820 shares. The calculation of the ownership percentage is based on 17,478,452 shares outstanding as of March 1, 2026. This filing was made under Rule 13d-1(b), signifying that the securities were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. This represents a significant new institutional position for the coffee chain operator.