CleanSpark just posted another month of stacking sats the old-fashioned way: by mining them. The Nasdaq-listed miner reported mining 614 BTC in June 2026, bringing its total treasury to 13,924 BTC as of June 30. That’s a net increase of 454 BTC from the previous month, when the company held 13,470 BTC.
The gap between 614 mined and 454 added means CleanSpark sold roughly 160 BTC during the month, presumably to cover operating costs. The company retained roughly 74% of its June production, selling the rest to fund operations.
The numbers behind the accumulation
CleanSpark is running at approximately 50 EH/s of hashrate with a peak fleet efficiency of 16.07 J/TH. The firm’s power capacity under contract now exceeds 1.8 GW.
CleanSpark hasn’t issued any new equity since late 2024. No dilutive share sales, no at-the-market offerings, no convertible notes flooding the market. The company is funding its operations and its Bitcoin accumulation strategy entirely from operational cash flows and existing resources.
