X0508 4 2024-06-01 0001167419 Riot Platforms, Inc. RIOT 0001721702 Les Jason C/O RIOT PLATFORMS, INC. 3855 AMBROSIA STREET, SUITE 301 CASTLE ROCK CO 80109 true true false false CHIEF EXECUTIVE OFFICER 0 Common Stock 2024-06-01 4 F 0 797890 9.75 D 6256700 D Common Stock 1069911 I See Footnote Shares surrendered to the Issuer, in accordance with Rule 16b-3 under the Exchange Act, to cover tax liabilities incident to the vesting of 1,485,884 restricted shares of the Issuer's Common Stock previously issued to the Reporting Person as restricted stock awards granted under the Issuer's 2019 Equity Incentive Plan , as previously reported on Form 4 by the Reporting Person. Shares held of record in trust by Jason M. Les, Trustee of The Jason M. Les Trust, dated March 8, 2021. /s/ Alexander K. Travis, Attorney-in-Fact for Jason Les 2024-06-03