Viewing insider transactions for Quanterix Corporation's (NASDAQ:QTRX ) over the last year, we see that insiders were net buyers. This means that a larger number of shares were purchased by insiders in relation to shares sold.

While we would never suggest that investors should base their decisions solely on what the directors of a company have been doing, logic dictates you should pay some attention to whether insiders are buying or selling shares.

Quanterix Insider Transactions Over The Last Year

The Independent Director William P. Donnelly made the biggest insider purchase in the last 12 months. That single transaction was for US$502k worth of shares at a price of US$24.85 each. That means that an insider was happy to buy shares at above the current price of US$17.00. It's very possible they regret the purchase, but it's more likely they are bullish about the company. To us, it's very important to consider the price insiders pay for shares. As a general rule, we feel more positive about a stock when an insider has bought shares at above current prices, because that suggests they viewed the stock as good value, even at a higher price. William P. Donnelly was the only individual insider to buy shares in the last twelve months.

The chart below shows insider transactions (by companies and individuals) over the last year. If you click on the chart, you can see all the individual transactions, including the share price, individual, and the date!

There are plenty of other companies that have insiders buying up shares. You probably do not want to miss this free list of undervalued small cap companies that insiders are buying.

Insider Ownership Of Quanterix

I like to look at how many shares insiders own in a company, to help inform my view of how aligned they are with insiders. I reckon it's a good sign if insiders own a significant number of shares in the company. Quanterix insiders own about US$40m worth of shares. That equates to 6.1% of the company. We've certainly seen higher levels of insider ownership elsewhere, but these holdings are enough to suggest alignment between insiders and the other shareholders.

So What Does This Data Suggest About Quanterix Insiders?

It doesn't really mean much that no insider has traded Quanterix shares in the last quarter. On a brighter note, the transactions over the last year are encouraging. Overall we don't see anything to make us think Quanterix insiders are doubting the company, and they do own shares. So these insider transactions can help us build a thesis about the stock, but it's also worthwhile knowing the risks facing this company. At Simply Wall St, we found 2 warning signs for Quanterix that deserve your attention before buying any shares.

But note: Quanterix may not be the best stock to buy. So take a peek at this free list of interesting companies with high ROE and low debt.

For the purposes of this article, insiders are those individuals who report their transactions to the relevant regulatory body. We currently account for open market transactions and private dispositions of direct interests only, but not derivative transactions or indirect interests.

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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.