144 0001846283 XXXXXXXX LIVE 0001167419 RIOT PLATFORMS, INC. 001-33675 3855 AMBROSIA STREET, SUITE 301 CASTLE ROCK CO 80109 303-794-2000 Hannah Cho Director Common Stock Fidelity Brokerage Services LLC, Member NYSE, SPIC

900 Salem Street Smithfield RI 02917

15000 261300 253538213 02/28/2024 NASDAQ Common Stock 09/27/2022 Shares acquired pursuant to equity awards made under the 2019 Equity Incentive Plan Riot Blockchain, Inc. N 15000 09/27/2022 Not Applicable - No payment Y 02/28/2024 /s/ Hannah Cho