RIOT PLATFORMS, INC. Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d)of the Securities Exchange Act of 1934during the preceding 12months (or for such shorter period that the registrant was required to file such reports), and (2)has been subject to such filingrequirements for the past 90days. Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405 ofRegulation S-T (§232.405 of this chapter) during the preceding 12months (or for such shorter period that the registrant was required to submit such files).Yes☒No☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or anemerging growth company. See definition of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” inRule12b-2 of the Exchange Act. Large accelerated filer☒Non-accelerated filer☐Emerging growth company☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any newor revised financial accounting standards provided pursuant to Section13(a)of the Exchange Act.☐ Indicate by check mark whether registrant is a shell company (as defined in Rule12b-2 of the Exchange Act). Yes☐No☒ As of April 29, 2026, the registrant had 378,151,230 shares of its common stock, no par value per share, outstanding, which was the only class of itsregistered securities outstanding as of that date. RIOT PLATFORMS,INC. PART I - FINANCIAL INFORMATIONItem 1.Financial Statements (Unaudited)1Condensed Consolidated Balance Sheets as of March 31, 2026 and December 31, 20251Condensed Consolidated Statements of Operations for the three months ended March 31, 2026and 20252Condensed Consolidated Statements of Comprehensive Income (Loss) for the three monthsended March 31, 2026 and 20253Condensed Consolidated Statements of Stockholders’ Equity for the three months ended March31, 2026 and 20254Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2026and 20255Notes to Condensed Consolidated Financial Statements7Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations31Item 3.Quantitative and Qualitative Disclosures About Market Risk47Item 4.Controls and Procedures48 PART II - OTHER INFORMATIONItem 1.Legal Proceedings48Item 1A. Risk Factors48Item 2.Unregistered Sales of Equity Securities and Use of Proceeds48Item 5.Other Information49Item 6.Exhibits50Signatures52 RIOT PLATFORMS,INC. As used in this Quarterly Report on Form10-Q for the quarterly period ended March31,2026 (this “Quarterly Report”),the terms “we,” “us,” “our,” the “Company,” the “Registrant,” “Riot Platforms,” and “Riot” mean Riot Platforms,Inc., aNevada corporation, and its consolidated subsidiaries, unless otherwise indicated. CAUTIONARY NOTEREGARDING FORWARD-LOOKING STATEMENTS This Quarterly Report contains forward-looking statements within the meaning of the United States Private SecuritiesLitigation Reform Act of 1995 (the “PSLRA”). The Company may also make forward-looking statements in otherreports and documents filed with the United States Securities and Exchange Commission (the “SEC”), including thosethat are incorporated by reference herein. All statements in this Quarterly Report and the documents incorporated byreference herein, other than statements of historical fact, are “forward-looking statements” within the scope of thiscautionary note, including, but not limited to statements concerning: our plans, strategies and objectives for futureoperations, including the Company’s strategic evolution from a bitcoin mining-focused enterprise to a diversified datacenter and digital infrastructure company; the integration of new equipment, systems, technologies, services ordevelopments; the development, construction, and commissioning of the Company’s power capacity for large-scale datacenter purposes, including artificial intelligence (“AI”) and high-performance computing (“HPC”) uses; the deploymentof industrial-scale immersion-cooled bitcoin mining hardware at our Bitcoin Mining facilities in Kentucky and Texas;the anticipated demand for large-scale data centers and specialized compute infrastructure; forecasted delivery timelinesfor power, cooling, and networking infrastructure; future economic conditions, performance, or outlooks; future politicaland regulatory conditions; the outcome of contingencies; potential acquisitions or divestitures of digital infrastructureassets; the number and value of bitcoin rewards and transaction fees we earn from our Bitcoin Mining operations; futureself-mining hash rate capacity; timing of receipt and deployment of miners; expected cash flows or capital expendituresrelated to data center build-outs; our beli