CleanSpark Releases September 2025 Bitcoin Mining Update

Core Insights - CleanSpark, Inc. has achieved significant growth in its Bitcoin treasury, surpassing 13,000 self-mined BTC, with year-over-year increases of over 27% in monthly production and 26% in fleet efficiency [1][5] - The company concluded a transformative fiscal year with record milestones, strategic acquisitions, and enhanced financial flexibility, positioning itself for future growth [2][5] Fiscal Year 2025 Overview - Fiscal Year 2025 was pivotal for CleanSpark, characterized by strategic accomplishments, leadership transitions, and increased financial flexibility, setting the stage for success in fiscal 2026 [2] - The mining operating business is now performing at scale, indicating a strong foundation for future growth [2] Leadership and Management - The leadership team combines deep operational, technical, and financial expertise to guide growth at scale, with key appointments including Matt Schultz as CEO and Chairman, Gary A. Vecchiarelli as CFO, and others [3][5] Bitcoin Mining Highlights - In September 2025, CleanSpark produced 629 BTC, with a peak single-day production of 21.71 BTC and an average daily production of 20.95 BTC [4] - For the calendar year 2025, the total Bitcoin produced reached 5,925 BTC [4] Hashrate and Operational Metrics - CleanSpark achieved hashrate milestones of 30 EH/s in October 2024 and 50 EH/s in June 2025, becoming the first publicly traded Bitcoin miner to reach these levels using fully self-operated data centers [5] - As of September 30, 2025, the average operating hashrate was 45.6 EH/s, with a peak efficiency of 16.07 J/Th [6] Financial and Treasury Metrics - The company built a leading Bitcoin treasury of over 13,000 BTC, with 2,583 BTC posted as collateral or receivable [6] - CleanSpark executed multiple financing milestones, including a $650 million convertible note offering at a 0% interest rate and $400 million in Bitcoin-backed credit facilities [5][6] Power Portfolio and Utilization - CleanSpark has 1.03 GW under contract and utilized 808 MW to support its operational hashrate [6]