144 0002129986 XXXXXXXX LIVE 0002068577 Black Rock Coffee Bar, Inc. 001-42844 9170 E. Bahia Drive, Suite 101 Scottsdale AZ 85260 458-256-9668 Daniel J. Brand 2021 Trust 10% Stockholder Class A Common Stock J.P. Morgan Securities LLC

270 Park Avenue New York, NY 10017

30000 266100.00 22207657 09/11/2026 NASDAQ Class A Common Stock 08/25/2026 Conversion of Common Units to Class A Shares Issuer N 30000 08/25/2026 N/A Y The shares covered by this filing will be sold today or within three months from the date of this filing by the Daniel J. Brand 2021 Trust, Tyson Switzenberg as Investment Advisor. 09/11/2026 /s/ Tyson Switzenberg, as Investment Advisor for the Daniel J. Brand 2021 Trust