144 0001721702 XXXXXXXX LIVE 0001167419 Riot Platforms, Inc. 001-33675 3855 Ambrosia Street, Suite 301 Castle Rock CO 80109 303-794-2000 Jason Les CEO Director Common J.P. Morgan Securities LLC 270 Park Avenue - 10th Floor New York NY 10017 175000 4214000 378151230 05/11/2026 Nasdaq Common Stock 07/07/2023 Transfer Jason Les, who acquired from Issuer on 06/01/23. N 175000 07/07/2023 N/A Y The shares filed today will be sold by the Jason M. Les Trust, Jason Les as Trustee 05/11/2026 08/25/2025 /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Jason Les