MARA Holdings, Inc. 10-Q

Item 5. Other Information. Not applicable. Item 6. Exhibits. 10.1 NYDIG Custodial Agreement 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 Inline XBRL Instance Document** 101.sch Inline XBRL Taxonomy Schema Document** 101.cal Inline XBRL Taxonomy Calculation Document** 101.def Inline XBRL Taxonomy Linkbase Document** 101.lab Inline XBRL Taxonomy Label Linkbase Document** 101.pre Inline XBRL Taxonomy Presentation Linkbase Document** 104 Inline XBRL * Furnished herewith ** Filed herein 38 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: May 10, 2023 MARATHON DIGITAL HOLDINGS, INC. By: /s/ Fred Thiel Name: Fred Thiel Title: Chief Executive Officer (Principal Executive Officer) By: /s/ Hugh Gallagher Name: Hugh Gallagher Title: Chief Financial Officer (Principal Financial Officer) 39