X0202 SCHEDULE 13G 0001420506-26-000503 0000902464 XXXXXXXX LIVE 2 Class A common stock 03/31/2026 0002068577 Black Rock Coffee Bar, Inc. 092244102 9170 E. Bahia Drive, Suite 101 Scottsdale AZ 85260 Rule 13d-1(b) GILDER GAGNON HOWE & CO LLC NY 0 0 0 602893 602893 N 3.5 BD Black Rock Coffee Bar, Inc. 9170 E. Bahia Drive, Suite 101, Scottsdale, AZ 85260 Gilder Gagnon Howe & Co., LLC 475, 10th Ave New York, NY 10018 New York N BD 602,893 3.5 0 0 0 602,893 N Y Y Y 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. GILDER GAGNON HOWE & CO LLC Laura Esposito 04/21/2026