0002100121-26-000704.txt : 20260429 0002100121-26-000704.hdr.sgml : 20260429 20260429151739 ACCESSION NUMBER: 0002100121-26-000704 CONFORMED SUBMISSION TYPE: SCHEDULE 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20260429 DATE AS OF CHANGE: 20260429 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Riot Platforms, Inc. CENTRAL INDEX KEY: 0001167419 STANDARD INDUSTRIAL CLASSIFICATION: FINANCE SERVICES [6199] ORGANIZATION NAME: 09 Crypto Assets EIN: 841553387 STATE OF INCORPORATION: NV FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SCHEDULE 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-79102 FILM NUMBER: 26914898 BUSINESS ADDRESS: STREET 1: 3855 AMBROSIA STREET, SUITE 301 CITY: CASTLE ROCK STATE: CO ZIP: 80109 BUSINESS PHONE: 303-794-2000 MAIL ADDRESS: STREET 1: 3855 AMBROSIA STREET, SUITE 301 CITY: CASTLE ROCK STATE: CO ZIP: 80109 FORMER COMPANY: FORMER CONFORMED NAME: Riot Blockchain, Inc. DATE OF NAME CHANGE: 20171004 FORMER COMPANY: FORMER CONFORMED NAME: Bioptix, Inc. DATE OF NAME CHANGE: 20161201 FORMER COMPANY: FORMER CONFORMED NAME: Venaxis, Inc. DATE OF NAME CHANGE: 20121218 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: VANGUARD PORTFOLIO MANAGEMENT LLC CENTRAL INDEX KEY: 0002100121 ORGANIZATION NAME: EIN: 392888838 STATE OF INCORPORATION: PA FISCAL YEAR END: 1231 LEGAL ENTITY IDENTIFIER: 529900YN99W7NU4H6B84 FILING VALUES: FORM TYPE: SCHEDULE 13G BUSINESS ADDRESS: STREET 1: 100 VANGUARD BLVD CITY: MALVERN STATE: PA ZIP: 19355 BUSINESS PHONE: 610-669-6148 MAIL ADDRESS: STREET 1: 100 VANGUARD BLVD CITY: MALVERN STATE: PA ZIP: 19355 SCHEDULE 13G 1 primary_doc.xml X0202 SCHEDULE 13G 0002100121 XXXXXXXX LIVE Common Stock 03/31/2026 0001167419 Riot Platforms Inc 767292105 3855 Ambrosia Street Suite 301 Castle Rock CO 80109 Rule 13d-1(b) Vanguard Portfolio Management PA 134095 0 21819754 0 21819754 5.75 IA In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by Vanguard Portfolio Management LLC and the following affiliates of Vanguard Portfolio Management LLC or business divisions of such affiliates: Vanguard Fiduciary Trust Company and Vanguard Global Advisers, LLC. This Schedule 13G includes securities held by Vanguard funds, or sleeves thereof, over which Vanguard Portfolio Management LLC exercises dispositive power, in addition to securities held by clients over which the affiliates or business divisions of such affiliates indicated above exercise dispositive and/or voting power. This Schedule 13G does not include securities, if any, beneficially owned by other subsidiaries or affiliates of Vanguard Portfolio Management LLC, or business divisions of such subsidiaries whose ownership of securities is disaggregated from that of the reporting business unit in accordance with such release. Riot Platforms Inc 3855 Ambrosia Street, Suite 301, Castle Rock, CO, 80109 Vanguard Portfolio Management 100 Vanguard Blvd,, Malvern, PA, 19355 PA N IA 21819754 5.75 134095 0 21819754 0 Y N Vanguard Portfolio Management, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein.No one other person's interest in the securities reported herein is more than 5%. Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. Vanguard Portfolio Management Ashley Grim 04/29/2026