Hook
668 BTC. That is all that remains of a 2.18 billion dollar bet. On July 22nd, Satsuma, the UK-based Bitcoin treasury company, announced it would sell its entire bitcoin holdings and begin the process of delisting from the London Stock Exchange. The stock had already lost 99% of its value. The strategy: take on massive debt, issue convertible notes, buy bitcoin, and hope the price goes up. It lasted less than one year.
Check the math, not the roadmap. The math here is brutal. Satsuma raised 2.18 billion in convertible notes—debt instruments that can be converted into equity at a predetermined price. They used those funds to acquire approximately 4,000 BTC at an average price of $60,000. Then the bitcoin price dropped, the notes came due, and the structure collapsed. By the time of the liquidation, they held only 668 BTC. The rest had been sold earlier to service the debt. The remaining stash is worth around $40 million. The equity holders get nothing.
Context
Let me be clear: Satsuma was not a technology company. It was a financial vehicle dressed in a crypto narrative. The idea was simple—borrow cheap via convertible notes, buy bitcoin, and let the appreciation cover the interest and eventual repayment. This is the exact model pioneered by MicroStrategy, but MicroStrategy has a software business generating cash flow to service debt. Satsuma had no revenue stream beyond the bitcoin itself.
From a cryptographic treasury perspective, the risk is obvious: leverage is always the enemy of security. When you borrow to buy an asset with 80% drawdown potential, you are not managing risk—you are gambling. The protocol mechanics of a convertible note are well understood: the investor gets downside protection (either repayment or conversion into equity at a discount). The issuer gets upside leverage. But the issuer also bears the full downside if the asset price falls.
Complexity is the enemy of security. Convertible notes are complex instruments. They introduce multiple failure points: interest rate sensitivity, conversion triggers, market liquidity, and counterparty risk. In Satsuma's case, the note holders likely converted early when the stock was high, then sold their shares, leaving the company with a massive debt burden and no way to repay except by selling bitcoin into a falling market.
Core
Let me walk through the numbers using my own audit framework. I have spent years dissecting balance sheets of tokenized assets and leverage structures. This case is textbook.
Step 1: Fundraising. Satsuma issued 2.18 billion in zero-coupon convertible notes. That means no interest payments, but the principal must be repaid at maturity or earlier if converted. The conversion price was presumably set at a premium to the stock price at issue—say $10. The note holders could convert to shares when the stock rose above that.
Step 2: Bitcoin purchase. At the time of purchase, bitcoin was around $60,000. If they bought 40,000 BTC initially (my estimate based on peak holdings), that’s 2.4 billion. So they used leverage of roughly 1.1x on the total. Not extreme, but enough to hurt.
Step 3: Market decline. Bitcoin dropped to $40,000, then $30,000. The stock price collapsed. Note holders started converting—not into shares, but into cash by selling the converted shares. This triggered dilution and further price decline. The company was forced to sell bitcoin to meet redemptions.
By the time of the announcement, only 668 BTC remained. The rest had been sold at losses. The equity value is now negative. Creditors get some recovery from the bitcoin sale, but not the full 2.18 billion.
Audits are snapshots, not guarantees. The initial audit of the convertible note structure likely looked fine on paper. But no audit tests for market timing or management competence. The risk was always there: a 50% drop in bitcoin would wipe out the equity completely. And it did.
Contrarian Angle
The conventional wisdom is that Satsuma failed because they bought bitcoin at the top. That is not the whole story. The real failure is in the financing structure. MicroStrategy also bought at the top in 2021, but they are still alive because they have a business that generates cash. Satsuma had nothing.
But here is the contrarian point: even MicroStrategy is not safe. If bitcoin drops 90%, MicroStrategy’s debt covenants could trigger forced liquidation. The only difference is that they have a longer runway. The market is ignoring the structural leverage in these treasury strategies.
Code does not care about your vision. Satsuma’s vision was to be the next MicroStrategy. The code—the convertible note terms, the liquidation bankruptcy rules—does not care. When the price drops, the contracts execute. You cannot negotiate with a smart contract or a non-disclosure agreement.
Another blind spot: the tax implications. In the UK, selling bitcoin triggers capital gains tax. Satsuma likely incurred massive tax liabilities on the gains from early sales, further eroding their capital. This is a detail that most analysts miss.
Takeaway
The Satsuma case is a warning, not an anomaly. As long as companies use leverage to hold bitcoin, there will be more failures. The next one could be larger. The market is ignoring the risk embedded in these balance sheets.
Check the math, not the roadmap. Look at the debt-to-equity ratio, the interest coverage, the liquidity of the underlying asset. If the company has no cash flow, the bitcoin is just a liability waiting to be sold.
Risk Analysis
| Risk Category | Risk Item | Level | Probability | Impact | Mitigation | |---------------|-----------|-------|------------|--------|------------| | Market | Bitcoin price decline triggers margin calls | High | High (given volatility) | Very High | Use low leverage or no leverage | | Financial | Convertible note conversion leads to dilution | High | Medium | High | Avoid convertible notes without portfolio hedging | | Regulatory | UK FCA scrutiny of leverage practices | Medium | Low | Medium | Transparent disclosure | | Narrative | Damage to corporate bitcoin treasury thesis | Medium | High | Low | Differentiate based on cash flow |
Implementation Details
If you are analyzing any company using a similar model, check three things: 1. The weighted average conversion price of the notes. 2. The current market price of the stock relative to that conversion price. 3. The amount of bitcoin held versus total debt.
If the conversion price is close to the stock price, the note holders will convert and dump the shares. If the bitcoin value is less than the debt, the company will sell bitcoin to repay. Both lead to a death spiral.
Conclusion
Satsuma is not a tragedy. It is a textbook case of what happens when hype meets leverage without a safety net. The market will forget this story in a month. But the structural vulnerability remains. Every corporate bitcoin treasury that uses debt is a ticking time bomb.
Complexity is the enemy of security. Keep it simple. Buy bitcoin with cash you can afford to lose. Do not borrow. Do not issue convertible notes. That is the only sustainable strategy.