144/A 0001968582-26-000818 0002083544 XXXXXXXX LIVE 0002068577 Black Rock Coffee Bar, Inc. 001-42844 9170 E. Bahia Drive, Suite 101 Scottsdale AZ 85260 458-256-9668 Jeffrey Robert Hernandez Director Class A Common Stock J.P. Morgan Securities LLC 270 Park Avenue, 10th Floor New York NY 10017 116000 846800 21572893 08/11/2026 NASDAQ Class A Common Stock 06/03/2026 Conversion of Common Units to Class A Shares Issuer N 116000 06/03/2026 N/A Y This is an amendment to the Form 144 filed on 8/11/2026 to correct the name of the trustee of the Jeffrey R. Hernandez 2021 Irrevocable Trust from Jeffrey Robert Hernandez to IconTrust, LLC. Demi Winters serves as the investment advisor for the Jeffrey R. Hernandez 2021 Irrevocable Trust and may be deemed to hold voting and investment power with respect to the shares held by the Jeffrey R. Hernandez 2021 Irrevocable Trust. Accordingly, the filer CIK for Jeffrey Robert Hernandez was also included in error. 08/27/2026 03/12/2026 /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Jeffrey Robert Hernandez