EX-21.1
Published on March 2, 2026
Exhibit 21.1
SUBSIDIARIES OF MARA HOLDINGS, INC.
The registrant’s subsidiaries and affiliates as of December 31, 2025 are included in the list below.
| Legal Entity Name | Percentage of Voting Securities Owned Directly or Indirectly by Registrant | Jurisdiction of Organization | ||||||||||||
| Abraj AlSia | 100% | Saudi Arabia | ||||||||||||
| Altitude Leasing Company, LLC | 100% | Delaware | ||||||||||||
| Arkon Energy Hannibal LLC | 100% | Delaware | ||||||||||||
| Aventura Leasing Co., LLC | 100% | Delaware | ||||||||||||
| Crown56 LLC | 100% | Wyoming | ||||||||||||
| Crypto Currency Patent Holding Company, LLC | 100% | Delaware | ||||||||||||
| FSI Marathon Project 1 Holding, Ltd. | 20% | United Arab Emirates | ||||||||||||
| GC Data Center Equity Holdings, LLC | 100% | Delaware | ||||||||||||
| GC Data Center Granbury, LLC | 100% | Delaware | ||||||||||||
| GC Data Center Holdings, LLC | 100% | Delaware | ||||||||||||
| GC Data Center Kearney, LLC | 100% | Delaware | ||||||||||||
| Great Plains Windpark Legacy, LLC | 100% | Delaware | ||||||||||||
| Hancock Leasing Company LLC | 100% | Delaware | ||||||||||||
| Hansford Leasing Company LLC | 100% | Delaware | ||||||||||||
| Hash2 Labs LLC | 100% | Delaware | ||||||||||||
| Magnus IP GMBH | 100% | Germany | ||||||||||||
| MARA Energy Harvesting Corporation | 100% | Delaware | ||||||||||||
| MARA Energy Holdings Co. | 100% | Delaware | ||||||||||||
| MARA Energy LLC | 100% | Saudi Arabia | ||||||||||||
| MARA Energy Trading Co. | 100% | Delaware | ||||||||||||
| MARA Europe SA | 100% | France | ||||||||||||
| MARA France SAS | 100% | France | ||||||||||||
| MARA Garden City LLC | 100% | Delaware | ||||||||||||
| MARA Pool LLC | 100% | Nevada | ||||||||||||
| MARA Tech, Inc. | 100% | Delaware | ||||||||||||
| MARA USA Corporation | 100% | Delaware | ||||||||||||
| MARA Ventures Corporation | 100% | Delaware | ||||||||||||
| MARA-NGON Joint Venture, LLC | 87% | Delaware | ||||||||||||
| Marathon Compute North 1 LLC | 100% | Delaware | ||||||||||||
| Marathon Crypto Mining, Inc. | 100% | Nevada | ||||||||||||
| Marathon Digital Holdings, Ltd. | 100% | United Arab Emirates | ||||||||||||
| Marathon Digital International, Inc. | 100% | Delaware | ||||||||||||
| Marathon Digital Leasing, LLC | 100% | Nevada | ||||||||||||
| Marathon Energy Technology Solutions SPC | 100% | Oman | ||||||||||||
| Marathon IP GMBH | 100% | Germany | ||||||||||||
| Marathon Tech International, Ltd. FZCO | 100% | United Arab Emirates | ||||||||||||
| Medtech GMBH | 100% | Germany | ||||||||||||
| Soems Acquisition Corp. | 100% | Delaware | ||||||||||||
| Sullivan Company Leasing LLC | 100% | Delaware | ||||||||||||
| Swift Business S.A. | 100% | Paraguay | ||||||||||||
| Synchronicity IP GMBH | 100% | Germany | ||||||||||||
| TLIC GMBH | 100% | Germany | ||||||||||||
| ZTM Limited (FZE) | 20% | United Arab Emirates | ||||||||||||
| ZTM Technology (SP) LLC | 20% | United Arab Emirates | ||||||||||||