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.

Where CleanSpark ranks among public Bitcoin holders

With 13,924 BTC in its treasury, CleanSpark sits at approximately the 11th to 12th position among the largest public Bitcoin holders globally.

All of CleanSpark’s Bitcoin holdings are self-mined, which carries a subtle but important distinction. Self-mined Bitcoin has a known cost basis tied to energy and infrastructure expenses, giving the company a clear picture of its acquisition costs. Companies that buy Bitcoin on the open market are subject to whatever price the market dictates that day.

What this means for investors

The no-equity-issuance streak dating back to late 2024 is arguably the most investor-friendly signal in CleanSpark’s update. It suggests the company believes its operational cash flows are sufficient to sustain growth, or at minimum that it’s unwilling to dilute shareholders at current valuations.

A treasury of nearly 14,000 BTC is a leveraged bet on the asset appreciating over time. If Bitcoin enters a prolonged downturn, those holdings become a liability on the balance sheet rather than an asset. CleanSpark’s ability to self-fund without equity raises provides a meaningful cushion that many competitors lack.

The 1.8 GW of contracted power capacity represents infrastructure that takes years and significant capital to replicate, creating a structural advantage that’s difficult for smaller operators to match.