Samuel W. Weatherford and Gordon Scharf Decrease Holdings in Black Rock Coffee Bar, Inc. below 5%

This Schedule 13G/A filing, dated May 19, 2026, details a change in beneficial ownership of Class A Common Stock in Black Rock Coffee Bar, Inc. by Samuel W. Weatherford and Gordon Scharf. Samuel W. Weatherford reported beneficial ownership of 539,732 shares, representing a 2.5% stake in the company. These shares are held through the Bryan D. Pereboom 2021 Trust and the Nicole R. Pereboom 2021 Trust, for which Mr. Weatherford serves as the investment advisor. Notably, the filing indicates that both reporting persons now own less than 5% of the issuer's outstanding Class A Common Stock, as confirmed by the 'Y' flag in Item 5. Gordon Scharf reported 0 shares and 0% ownership. The percentage calculation is based on 21,572,893 shares outstanding as of May 11, 2026. The filers certified that the securities were not acquired for the purpose of influencing or changing the control of the issuer. This amendment reflects a decrease in holdings to below the 5% reporting threshold for the group.