Greenidge Generation Holdings Shares Recent Q1 Highlights; Holds Over 85 Bitcoin Currently; Reduced Debt By Over $5.2M Of Aggregate Principal Amount Through Privately Negotiated Debt-For-Equity Exchanges

Recent First Quarter 2025 Highlights:

• Holds over 85 Bitcoin currently;
• Reduced debt by over $5.2 million of aggregate principal amount through privately negotiated debt-for-equity exchanges, including approximately $3.7 million of which was completed in 2024;
• Improved efficiency of Greenidge's current active fleet miner to 23.8 J/TH as a result of strategic purchases of more efficient miners, from the Company's miner fleet efficiency of 27.1 J/TH as of September 30, 2024;
• Proceeding toward a closing on the South Carolina property;
• Exploring acquisition of new site in Mississippi, with access to at least 25MW of additional power in Q4 2025;
• Added 2.5MW of planned mining capacity at existing Mississippi site;
• Exploring subdivision and sale of warehouse at existing Mississippi site;
• Provided significant power to the grid in January and February during periods of extreme cold in Northeast;
• Continued exploration of accretive business combinations; and
• Evaluated future sites with significant low-cost power capacity.

Greenidge currently has 119MW of active self-mining, hosting and power generation across sites in New York, Mississippi and North Dakota. With planned mining capacity of 2.5MW expected to be added in Q2 2025 and 25MW by Q4 2025, Greenidge expects to end the year with a total mining capacity of 146.5MW. The Company's active datacenter operations consist of approximately 2.9 EH/s of datacenter hosting and cryptocurrency mining, of which 1.8 E/Hs, is associated with datacenter hosting and 1.1 E/Hs is associated with our cryptocurrency mining.

Greenidge ended the fourth quarter with $8.6 million of cash and $68.5 million in aggregate principal amount of debt.