There's no doubt that money can be made by owning shares of unprofitable businesses. For example, although software-as-a-service business Salesforce.com lost money for years while it grew recurring revenue, if you held shares since 2005, you'd have done very well indeed. But while the successes are well known, investors should not ignore the very many unprofitable companies that simply burn through all their cash and collapse.

So should Curis (NASDAQ:CRIS) shareholders be worried about its cash burn? For the purpose of this article, we'll define cash burn as the amount of cash the company is spending each year to fund its growth (also called its negative free cash flow). We'll start by comparing its cash burn with its cash reserves in order to calculate its cash runway.

How Long Is Curis' Cash Runway?

You can calculate a company's cash runway by dividing the amount of cash it has by the rate at which it is spending that cash. In March 2026, Curis had US$15m in cash, and was debt-free. In the last year, its cash burn was US$27m. That means it had a cash runway of around 7 months as of March 2026. To be frank, this kind of short runway puts us on edge, as it indicates the company must reduce its cash burn significantly, or else raise cash imminently. Depicted below, you can see how its cash holdings have changed over time.

How Well Is Curis Growing?

Curis reduced its cash burn by 19% during the last year, which points to some degree of discipline. But the revenue dip of 37% in the same period was a bit concerning. Considering both these factors, we're not particularly excited by its growth profile. Clearly, however, the crucial factor is whether the company will grow its business going forward. So you might want to take a peek at how much the company is expected to grow in the next few years.

How Easily Can Curis Raise Cash?

Since Curis revenue has been falling, the market will likely be considering how it can raise more cash if need be. Companies can raise capital through either debt or equity. One of the main advantages held by publicly listed companies is that they can sell shares to investors to raise cash and fund growth. We can compare a company's cash burn to its market capitalisation to get a sense for how many new shares a company would have to issue to fund one year's operations.

Curis has a market capitalisation of US$21m and burnt through US$27m last year, which is 130% of the company's market value. That suggests the company may have some funding difficulties, and we'd be very wary of the stock.

How Risky Is Curis' Cash Burn Situation?

There are no prizes for guessing that we think Curis' cash burn is a bit of a worry. In particular, we think its cash burn relative to its market cap suggests it isn't in a good position to keep funding growth. While not as bad as its cash burn relative to its market cap, its cash burn reduction is also a concern, and considering everything mentioned above, we're struggling to find much to be optimistic about. Once we consider the metrics mentioned in this article together, we're left with very little confidence in the company's ability to manage its cash burn, and we think it will probably need more money. On another note, Curis has 5 warning signs (and 3 which are significant) we think you should know about.

If you would prefer to check out another company with better fundamentals, then do not miss this free list of interesting companies, that have HIGH return on equity and low debt or this list of stocks which are all forecast to grow.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.