Bitcoin miner CleanSpark expanded its corporate Bitcoin treasury by 454 BTC in June 2026, bringing total holdings to 13,924 BTC. The increase was detailed in the company’s monthly operational update, which showed continued accumulation alongside active treasury management.
CleanSpark produced 614 BTC during June, down from 671 BTC in May. Despite the lower monthly output, the company’s total balance increased from 13,470 BTC to 13,924 BTC, indicating that part of the month’s production was retained while other activity supported operations and treasury positioning.
CleanSpark Uses Sales, Options and Basis Trades
CleanSpark sold 179 BTC at spot prices during the month, with an average sale price of $69,056 per BTC. The company also sold 250 BTC through call option exercises and acquired 25 BTC through put option exercises.
The miner added another 244 BTC through delta-neutral basis trades, showing that treasury growth came from more than direct mining output. These transactions reflect a more active treasury strategy, where production, derivatives and market-neutral trades all contributed to the monthly balance.
Out of CleanSpark’s total holdings, 1,719 BTC are posted as collateral or listed as receivables tied to derivative transactions. That detail matters because not all treasury Bitcoin is held in the same operational state or immediately available without linked obligations.
Hashrate Holds at 50 EH/s as Infrastructure Expands
CleanSpark reported an operational hashrate of 50 EH/s as of June 30, with an average operating hashrate of 42.6 EH/s during the month. The company’s deployed fleet totaled 225,137 mining units.
Fleet efficiency stood at 16.07 J/TH, keeping the company focused on hardware productivity as mining economics remain sensitive to power costs, Bitcoin price and network difficulty. CleanSpark also reported more than 1.8 GW of power capacity under contract, with 808 MW currently utilized.
For the 2026 calendar year, CleanSpark has produced 3,724 BTC, reinforcing its position among the largest publicly traded Bitcoin miners by operating scale and treasury size. The company also indicated it has not issued new equity since late 2024, suggesting current growth is being funded through operations and treasury activity.
The update does not provide wallet-level verification of specific Bitcoin movements or final settlement details for basis trades. For now, CleanSpark’s June report shows continued accumulation, active balance-sheet management and steady infrastructure expansion, with further confirmation expected through future quarterly filings.
