Even when a business is losing money, it's possible for shareholders to make money if they buy a good business at the right price. 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. But the harsh reality is that very many loss making companies burn through all their cash and go bankrupt.

Given this risk, we thought we'd take a look at whether Unity Biotechnology (NASDAQ:UBX) shareholders should 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). Let's start with an examination of the business' cash, relative to its cash burn.

See our latest analysis for Unity Biotechnology

When Might Unity Biotechnology Run Out Of Money?

A company's cash runway is calculated by dividing its cash hoard by its cash burn. In September 2024, Unity Biotechnology had US$29m in cash, and was debt-free. Importantly, its cash burn was US$23m over the trailing twelve months. So it had a cash runway of approximately 15 months from September 2024. That's not too bad, but it's fair to say the end of the cash runway is in sight, unless cash burn reduces drastically. The image below shows how its cash balance has been changing over the last few years.

How Is Unity Biotechnology's Cash Burn Changing Over Time?

Unity Biotechnology didn't record any revenue over the last year, indicating that it's an early stage company still developing its 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. While it hardly paints a picture of imminent growth, the fact that it has reduced its cash burn by 45% over the last year suggests some degree of prudence. 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 Unity Biotechnology To Raise More Cash For Growth?

Even though it has reduced its cash burn recently, shareholders should still consider how easy it would be for Unity Biotechnology to raise more cash in the future. Generally speaking, a listed business can raise new cash through issuing shares or taking on debt. One of the main advantages held by publicly listed companies is that they can sell shares to investors to raise cash and fund 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).

In the last year, Unity Biotechnology burned through US$23m, which is just about equal to its US$22m market cap. That suggests the company may have some funding difficulties, and we'd be very wary of the stock.

So, Should We Worry About Unity Biotechnology's Cash Burn?

On this analysis of Unity Biotechnology's cash burn, we think its cash burn reduction was reassuring, while its cash burn relative to its market cap has us a bit worried. Looking at the factors mentioned in this short report, we do think that its cash burn is a bit risky, and it does make us slightly nervous about the stock. On another note, we conducted an in-depth investigation of the company, and identified 2 warning signs for Unity Biotechnology (1 can't be ignored!) that you should be aware of before investing here.

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.

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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.