Capital B has secured fresh backing from Blockstream CEO Adam Back through a 1.1 million euro ($1.28 million) warrant issuance, deepening the cryptographer’s exposure to the French-listed Bitcoin treasury firm.
Summary
- Capital B has raised €1.1 million through warrants fully subscribed by Blockstream CEO Adam Back, increasing his stake to 9.97% on a diluted basis.
- The company said the funds will support its Bitcoin treasury strategy, as shares rose over 6.5% on the announcement despite a 16% decline in 2026.
According to a Monday announcement from Capital B, Back subscribed to 10 million warrants priced at 0.11 euros ($0.13) each, with every warrant granting the right to purchase a new share at an exercise price of 0.84 euros ($0.98). The company said the exercise price aligns with its market net asset value, placing mNAV at 1.1 per share.
Already among the firm’s largest investors, Back’s position expands further through the deal. Capital B said his holdings now exceed 39.5 million shares, representing 9.97% ownership on a fully diluted basis. Back, known for creating Hashcash, contributed one of the proof-of-work systems cited in the Bitcoin white paper.
Capital raise strengthens Bitcoin accumulation push
Capital B said the proceeds will be directed toward accelerating its Bitcoin treasury strategy, a move that coincided with a positive reaction in its share price. Data from Yahoo Finance shows the company’s stock rose more than 6.5% on Monday following the announcement, although it remains down over 16% since the start of 2026.
Bitcointreasuries.net data places Capital B as the 25th-largest corporate Bitcoin holder, with 2,943 BTC valued at roughly $234 million.
Activity across similar firms has diverged in recent weeks as companies adjust to market conditions. Capital B and UK-based Connecting Excellence Group were the only Bitcoin treasury firms in Europe to raise capital over the past month, according to available disclosures. Connecting Excellence Group raised $794,000 on April 23, also with backing from Back.
Elsewhere, companies have taken a more defensive approach. On April 24, Nasdaq-listed Nakamoto said it had launched an actively managed derivatives program designed to generate income from volatility while hedging downside exposure on its Bitcoin holdings. In a March 30 filing with the U.S. Securities and Exchange Commission, Nakamoto disclosed the sale of 284 BTC, worth about $20 million at the time, making it the largest treasury firm this year to report trimming its holdings.
Meanwhile, Genius Group said it had liquidated its entire Bitcoin treasury of 84 BTC in February, raising about $5.7 million to repay an $8.5 million debt obligation, according to disclosures submitted to the SEC.
