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 the harsh reality is that very many loss making companies burn through all their cash and go bankrupt.

So should Rapport Therapeutics (NASDAQ:RAPP) shareholders be worried about its cash burn? In this report, we will consider the company's annual negative free cash flow, henceforth referring to it as the 'cash burn'. The first step is to compare its cash burn with its cash reserves, to give us its 'cash runway'.

Does Rapport Therapeutics Have A Long Cash Runway?

A cash runway is defined as the length of time it would take a company to run out of money if it kept spending at its current rate of cash burn. When Rapport Therapeutics last reported its September 2024 balance sheet in November 2024, it had zero debt and cash worth US$321m. Looking at the last year, the company burnt through US$64m. That means it had a cash runway of about 5.0 years as of September 2024. Importantly, though, analysts think that Rapport Therapeutics will reach cashflow breakeven before then. If that happens, then the length of its cash runway, today, would become a moot point. Depicted below, you can see how its cash holdings have changed over time.

How Is Rapport Therapeutics' Cash Burn Changing Over Time?

Because Rapport Therapeutics isn't currently generating revenue, we consider it an early-stage business. So while we can't look to sales to understand growth, we can look at how the cash burn is changing to understand how expenditure is trending over time. The skyrocketing cash burn up 169% year on year certainly tests our nerves. That sort of ramp in expenditure is no doubt intended to generate worthwhile long term returns. 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.

Can Rapport Therapeutics Raise More Cash Easily?

Given its cash burn trajectory, Rapport Therapeutics shareholders may wish to consider how easily it could raise more cash, despite its solid cash runway. Issuing new shares, or taking on debt, are the most common ways for a listed company to raise more money for its business. 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).

Rapport Therapeutics has a market capitalisation of US$748m and burnt through US$64m last year, which is 8.6% of the company's market value. Given that is a rather small percentage, it would probably be really easy for the company to fund another year's growth by issuing some new shares to investors, or even by taking out a loan.

How Risky Is Rapport Therapeutics' Cash Burn Situation?

As you can probably tell by now, we're not too worried about Rapport Therapeutics' cash burn. For example, we think its cash runway suggests that the company is on a good path. While we must concede that its increasing cash burn is a bit worrying, the other factors mentioned in this article provide great comfort when it comes to the cash burn. There's no doubt that shareholders can take a lot of heart from the fact that analysts are forecasting it will reach breakeven before too long. Taking all the factors in this report into account, we're not at all worried about its cash burn, as the business appears well capitalized to spend as needs be. On another note, Rapport Therapeutics has 4 warning signs (and 2 which are a bit unpleasant) we think you should know about.

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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.