CONCENTRATIONS

6 Months Ended

Jun. 30, 2025

Risks and Uncertainties [Abstract]

CONCENTRATIONS

CONCENTRATIONS

The Company has a single hosting customer that accounted for 47% and 51% of the Company’s revenue during the three months ended June 30, 2025 and 2024, respectively, as well as 37% and 49% of the Company’s revenue during the six months ended June 30, 2025 and 2024, respectively. The single hosting customer has the option to terminate the hosting agreement with 6 months' notice.

For the Company’s self-mining operations, Greenidge considers its mining pool operators to be its customers. Greenidge has historically used a limited number of pool operators that have operated under contracts with a one-day term, which

allows Greenidge the option to change pool operators at any time. Revenue from the Company’s pool operator customer accounted for approximately 32% and 37% of total revenue for the three months ended June 30, 2025 and 2024, respectively, and 26% and 36% of the Company’s revenue during the six months ended June 30, 2025 and 2024, respectively.

The Company has one major power customer, NYISO, that accounted for 20% and 11% of its revenue for the three months ended June 30, 2025 and 2024, respectively, and 37% and 14% of the Company’s revenue during the six months ended June 30, 2025 and 2024, respectively.

The Company has one natural gas vendor that accounted for approximately 35% and 27% of cost of revenue for the three months ended June 30, 2025 and 2024, respectively, and 47% and 37% of the Company’s revenue during the six months ended June 30, 2025 and 2024, respectively.