Platinum Investment Management Limited (ASX:PTM) insider upped their holding earlier this year

Insiders were net buyers of Platinum Investment Management Limited's (ASX:PTM ) stock during the past year. That is, insiders bought more stock than they sold.

While insider transactions are not the most important thing when it comes to long-term investing, logic dictates you should pay some attention to whether insiders are buying or selling shares.

Check out our latest analysis for Platinum Investment Management

Platinum Investment Management Insider Transactions Over The Last Year

The Independent Non-Executive Chairman Guy Strapp made the biggest insider purchase in the last 12 months. That single transaction was for AU$103k worth of shares at a price of AU$4.68 each. That means that an insider was happy to buy shares at above the current price of AU$2.69. Their view may have changed since then, but at least it shows they felt optimistic at the time. In our view, the price an insider pays for shares is very important. 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. The only individual insider to buy over the last year was Guy Strapp.

You can see a visual depiction of insider transactions (by companies and individuals) over the last 12 months, below. If you want to know exactly who sold, for how much, and when, simply click on the graph below!

Platinum Investment Management is not the only stock insiders are buying. So take a peek at this free list of growing companies with insider buying.

Insider Ownership

Looking at the total insider shareholdings in a company can help to inform your view of whether they are well aligned with common shareholders. We usually like to see fairly high levels of insider ownership. Platinum Investment Management insiders own 33% of the company, currently worth about AU$510m based on the recent share price. I like to see this level of insider ownership, because it increases the chances that management are thinking about the best interests of shareholders.

So What Does This Data Suggest About Platinum Investment Management Insiders?

There haven't been any insider transactions in the last three months -- that doesn't mean much. On a brighter note, the transactions over the last year are encouraging. Judging from their transactions, and high insider ownership, Platinum Investment Management insiders feel good about the company's future. While we like knowing what's going on with the insider's ownership and transactions, we make sure to also consider what risks are facing a stock before making any investment decision. To that end, you should learn about the 3 warning signs we've spotted with Platinum Investment Management (including 1 which is potentially serious).

But note: Platinum Investment Management 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, but not derivative transactions.

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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.