Is Aura Biosciences (NASDAQ:AURA) In A Good Position To Deliver On Growth Plans?

Just because a business does not make any money, does not mean that the stock will go down. 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. Having said that, unprofitable companies are risky because they could potentially burn through all their cash and become distressed.

So, the natural question for Aura Biosciences (NASDAQ:AURA) shareholders is whether they should be concerned by its rate of cash burn. In this article, we define cash burn as its annual (negative) free cash flow, which is the amount of money a company spends each year to fund its growth. The first step is to compare its cash burn with its cash reserves, to give us its 'cash runway'.

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How Long Is Aura Biosciences' Cash Runway?

A company's cash runway is calculated by dividing its cash hoard by its cash burn. When Aura Biosciences last reported its December 2024 balance sheet in March 2025, it had zero debt and cash worth US$151m. In the last year, its cash burn was US$81m. That means it had a cash runway of around 22 months as of December 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.

Check out our latest analysis for Aura Biosciences

How Is Aura Biosciences' Cash Burn Changing Over Time?

Aura Biosciences 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. With the cash burn rate up 26% in the last year, it seems that the company is ratcheting up investment in the business over time. That's not necessarily a bad thing, but investors should be mindful of the fact that will shorten the cash runway. While the past is always worth studying, it is the future that matters most of all. So you might want to take a peek at how much the company is expected to grow in the next few years.

How Hard Would It Be For Aura Biosciences To Raise More Cash For Growth?

Given its cash burn trajectory, Aura Biosciences 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. 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.

Aura Biosciences' cash burn of US$81m is about 26% of its US$309m 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.

How Risky Is Aura Biosciences' Cash Burn Situation?

Even though its increasing cash burn makes us a little nervous, we are compelled to mention that we thought Aura Biosciences' cash runway was relatively promising. 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. On another note, we conducted an in-depth investigation of the company, and identified 4 warning signs for Aura Biosciences (2 can't be ignored!) that you should be aware of before investing here.

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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.