144 0002083544 XXXXXXXX LIVE 0002068577 Black Rock Coffee Bar, Inc. 001-42844 9170 E. Bahia Drive, Suite 101 Scottsdale AZ 85260 458-256-9668 Jeffrey R. Hernandez 2021 Trust 10% Stockholder Class A Common Stock J.P. Morgan Securities LLC

270 Park Avenue New York, NY 10017

80000 709600.00 22207657 09/11/2026 NASDAQ Class A Common Stock 08/25/2026 Conversion of Common Units to Class A Shares Issuer N 80000 08/25/2026 N/A N Jeffrey R. Hernandez 2021 Trust

3625 S. Town Center Dr. Suite 100 Las Vegas, NV 89135

Class A Common Stock 08/11/2026 57541 402971.00 Jeffrey R. Hernandez 2021 Trust

3625 S. Town Center Dr. Suite 100 Las Vegas, NV 89135

Class A Common Stock 08/12/2026 58459 457784.00 The shares covered by this filing will be sold today or within three months from the date of this filing by the Jeffrey R. Hernandez 2021 Trust. 09/11/2026 /s/ Jeffrey R. Hernandez