CleanSpark, Inc. (Nasdaq: CLSK) ("CleanSpark" or the "Company"), a market-leading data center developer, today released its unaudited Bitcoin mining and operations update for the month ended September 30, 2026.

September 2026 Bitcoin Mining Highlights (Unaudited)

Production Metrics
Bitcoin produced529
Peak single day bitcoin production18.99
Average daily bitcoin production17.64
CY2026 bitcoin produced5,432
Fleet Metrics
Operational Hashrate1 50 EH/s
Average operating hashrate36.0 EH/s
Peak efficiency of deployed fleet 16.07 J/Th
Deployed fleet as of September 30199,745
Power Portfolio Metrics
GW under contract21.8 GW
Utilized MW3808 MW
Bitcoin Treasury Activity
Total bitcoin holdings as of August 3113,703
Bitcoin produced529
Bitcoin sold at spot(2)
Bitcoin sold pursuant to call exercises(700)
Total bitcoin holdings as of September 30413,530
  
Average price per bitcoin sold5$72,928