MARA Holdings, Inc. 10-Q

Item 5. Other Information. Not applicable. Item 6. Exhibits. 10.1 Binding Letter of Intent Between the Company and Compute North, LLC (Filed as an exhibit to our Current Report on 8-K filed on May 27, 2021. 31.1 Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002* 31.2 Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002* 32.1 Certification pursuant to Section 906 of the Sarbanes-Oxley Act of 2002* 32.2 Certification pursuant to Section 906 of the Sarbanes-Oxley Act of 2002* 101.ins XBRL Instance Document** 101.sch XBRL Taxonomy Schema Document** 101.cal XBRL Taxonomy Calculation Document** 101.def XBRL Taxonomy Linkbase Document** 101.lab XBRL Taxonomy Label Linkbase Document** 101.pre XBRL Taxonomy Presentation Linkbase Document** 104 Cover Page Interactive Data File (formatted in IXBRL, and included in exhibit 101). * Furnished herewith ** Filed herein 28 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. Date: August 13, 2021 MARATHON DIGITAL HOLDINGS, INC. By: /s/ Fred Thiel Name: Fred Thiel Title: Chief Executive Officer (Principal Executive Officer) By: /s/ Simeon Salzman Name: Simeon Salzman Title: Chief Financial Officer (Principal Financial and Accounting Officer) 29