CleanSpark
CleanSpark, Inc. is a prominent Bitcoin mining company based in Henderson, Nevada. Originally incorporated in 1987 as SmartData, the company has undergone several transformations, rebranding as Stratean in 2014 and merging with CleanSpark and Specialized Energy Solutions in 2016. CleanSpark officially adopted its current name in November 2016 and has since focused on optimizing Bitcoin mining operations through its expertise in energy technology. The company operates large-scale Bitcoin mining facilities, emphasizing energy efficiency and sustainability by utilizing renewable energy sources. In addition to Bitcoin mining, CleanSpark offers energy technology solutions, providing advanced software and hardware for microgrid applications. These solutions enhance energy resilience and optimization across various sectors, including commercial, industrial, and residential settings. CleanSpark's commitment to sustainable practices positions it as a leader in the Bitcoin mining sector, contributing positively to the broader Bitcoin ecosystem.
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Headcount trend
CleanSpark went from 66 employees in Jul 2023 to 134 in Jun 2025. Jan to Jun 2025: 15 people joined, 4 left.
Headcount data through Jun 2025
Org structure
Headcount by department
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CleanSpark FAQ
How many employees does CleanSpark have?
CleanSpark has about 134 employees, unchanged over the 3 months to Jun 2025.
Does CleanSpark sponsor H1B visas?
Yes. CleanSpark filed 4 H1B (LCA) applications in FY2026, according to the latest U.S. Department of Labor disclosures. Most of them were for Finance roles.
What is CleanSpark's revenue per employee?
CleanSpark makes about $4.01M in revenue per employee, based on $537.4M annual revenue and 134 employees.
Is CleanSpark a public company?
Yes. CleanSpark is publicly traded under the ticker CLSK on NASDAQ.
Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.