Just because a business does not make any money, does not mean that the stock will go down. For example, although Amazon.com made losses for many years after listing, if you had bought and held the shares since 1999, you would have made a fortune. Having said that, unprofitable companies are risky because they could potentially burn through all their cash and become distressed.

So should Cabaletta Bio (NASDAQ:CABA) 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.

Does Cabaletta Bio Have A Long Cash Runway?

A company's cash runway is the amount of time it would take to burn through its cash reserves at its current cash burn rate. When Cabaletta Bio last reported its June 2026 balance sheet in August 2026, it had zero debt and cash worth US$225m. In the last year, its cash burn was US$154m. So it had a cash runway of approximately 18 months from June 2026. Importantly, analysts think that Cabaletta Bio will reach cashflow breakeven in 3 years. Essentially, that means the company will either reduce its cash burn, or else require more cash. Depicted below, you can see how its cash holdings have changed over time.

How Is Cabaletta Bio's Cash Burn Changing Over Time?

Because Cabaletta Bio isn't currently generating revenue, we consider it an early-stage business. Nonetheless, we can still examine its cash burn trajectory as part of our assessment of its cash burn situation. Over the last year its cash burn actually increased by 45%, which suggests that management are increasing investment in future growth, but not too quickly. However, the company's true cash runway will therefore be shorter than suggested above, if spending continues to increase. Clearly, however, the crucial factor is whether the company will grow its business going forward. For that reason, it makes a lot of sense to take a look at our analyst forecasts for the company.

How Hard Would It Be For Cabaletta Bio To Raise More Cash For Growth?

Given its cash burn trajectory, Cabaletta Bio shareholders may wish to consider how easily it could raise more cash, despite its solid cash runway. Generally speaking, a listed business can raise new cash through issuing shares or taking on debt. Many companies end up issuing new shares to fund future growth. By comparing a company's annual cash burn to its total market capitalisation, we can estimate roughly how many shares it would have to issue in order to run the company for another year (at the same burn rate).

Cabaletta Bio's cash burn of US$154m is about 31% of its US$493m market capitalisation. That's not insignificant, and if the company had to sell enough shares to fund another year's growth at the current share price, you'd likely witness fairly costly dilution.

So, Should We Worry About Cabaletta Bio's Cash Burn?

Even though its increasing cash burn makes us a little nervous, we are compelled to mention that we thought Cabaletta Bio's cash runway was relatively promising. Shareholders can take heart from the fact that analysts are forecasting it will reach breakeven. We don't think its cash burn is particularly problematic, but after considering the range of factors in this article, we do think shareholders should be monitoring how it changes over time.

Of course, you might find a fantastic investment by looking elsewhere. So take a peek at this free list of interesting companies, and this list of stocks growth stocks (according to analyst forecasts)

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.