| | | | | | | | |
| Name of Subsidiary | | Jurisdiction of Formation |
| | |
| Greenidge Generation LLC | | New York |
| Lockwood Hills LLC | | New York |
| Greenidge Solar LLC | | Delaware |
| Greenidge Pipeline LLC | | Delaware |
| Greenidge Pipeline Properties Corporation | | New York |
| Greenidge Markets and Trading LLC | | Delaware |
| Greenidge Generation Blocker Inc. | | Delaware |
| Greenidge Generation Holdings LLC | | Delaware |
| Greenidge Secured Lending LLC | | Delaware |
| Support.com, Inc. | | Delaware |
| Greenidge Texas LLC | | Delaware |
| GNY Collateral Holding LLC | | Delaware |
| GNY Collateral LLC | | Delaware |
| Greenidge British Columbia ULC | | Canada |
| GTX Gen 1 LLC | | Delaware |
| GTX Gen 1 Collateral Holding LLC | | Delaware |
| GTX Gen 1 Collateral LLC | | Delaware |
| GTX Dev 1 LLC | | Delaware |
| Greenidge South Carolina LLC | | Delaware |
| GSC Collateral Holding LLC | | Delaware |
| GSC Collateral LLC | | Delaware |
| GSC RE LLC | | Delaware |
| GSC DemoCo LLC | | Delaware |
| 300 Jones Road LLC | | Delaware |
| GGHI Inactive Holdings LLC | | Delaware |
| Greenidge Mississippi LLC | | Mississippi |
| Greenidge North Dakota, LLC | | Delaware |