Strategy paired $555.5 million of stock sales with a 6,556-bitcoin purchase

Strategy disclosed on April 21, 2025 that it had acquired 6,556 bitcoin for $555.8 million between April 14 and April 20. The company reported an average purchase price of $84,785 per bitcoin, including fees and expenses.

The acquisition was notable not simply for its size, but for how Strategy financed it. During the same reporting window, the company sold common and preferred shares through at-the-market programs, converting demand for its publicly traded securities into another addition to its bitcoin treasury.

Two stock programs supplied the capital

Strategy reported selling 1,755,000 shares of MSTR Class A common stock for $547.7 million in net proceeds between April 14 and April 20. It also sold 91,213 shares of its 8.00% Series A perpetual strike preferred stock, traded as STRK, for another $7.8 million.

The two programs therefore generated a company-reported total of $555.5 million, net of sales commissions. Strategy stated that the bitcoin purchases were made using proceeds from the common-stock and STRK programs.

That wording does not establish a transaction-by-transaction reconciliation. The reported securities proceeds were $0.3 million below the reported bitcoin purchase cost, but both figures were rounded and used different expense conventions: stock proceeds were net of sales commissions, while bitcoin purchase prices included fees and expenses. The filing did not identify any additional cash contribution or allocate particular share sales to particular bitcoin trades.

The treasury reached 538,200 bitcoin

As of April 20, Strategy reported holding 538,200 bitcoin acquired for an aggregate $36.47 billion, including fees and expenses. Its company-reported average acquisition price across the treasury was $67,766 per bitcoin.

The new 6,556-bitcoin lot represented approximately 1.22% of the post-purchase holdings, calculated by dividing 6,556 by 538,200. Although incremental relative to the full treasury, the purchase showed that Strategy could continue expanding its position through two different classes of publicly traded securities.

The common-stock program had been established on October 30, 2024 with an authorized size of $21 billion. Strategy reported $1.53 billion of MSTR issuance capacity remaining on April 20. The STRK program, established on March 10, 2025 with the same authorized size, retained $20.96 billion of capacity.

Those balances represented authorization to conduct possible future sales, not committed financing or cash already received. Common issuance also diluted existing shareholders’ proportional ownership, while STRK introduced a perpetual preferred security senior to the common stock in the company’s capital structure.

Why the financing structure mattered

The April 21 disclosure demonstrated a reinforcing capital-markets mechanism. Investors bought Strategy securities; Strategy used the resulting proceeds to acquire bitcoin; and the enlarged bitcoin treasury remained central to the investment case surrounding those securities.

That mechanism connected bitcoin accumulation to conditions in both cryptocurrency and equity markets. It depended not only on Strategy’s willingness to buy bitcoin, but also on investor demand for MSTR and STRK at prices management considered acceptable. The large unused program authorizations indicated capacity, but they did not guarantee that future issuance could occur on favorable terms.

What remained unverified

The SEC filing and Strategy’s corporate announcement establish the disclosed quantities, costs, financing windows and treasury totals. They do not identify trading venues, counterparties, wallet addresses, execution timestamps or custody arrangements. Coinburn therefore cannot independently match the reported acquisition to specific on-chain transfers or determine the intraperiod bitcoin prices at which individual trades occurred.

No claim about bitcoin’s April 21 market reaction is made here. Contemporaneous reports cited differing spot prices and observation times, and the filing alone cannot establish that Strategy’s announcement caused any market movement. The verified development is narrower: Strategy disclosed another substantial bitcoin purchase and directly linked it to sales of common and preferred equity.