We wouldn't blame Comcast Corporation (NASDAQ:CMCSA) shareholders if they were a little worried about the fact that Brian Roberts, the Chairman & CEO recently netted about US$20m selling shares at an average price of US$42.73. However, it's crucial to note that they remain very much invested in the stock and that sale only reduced their holding by 2.0%.

The Last 12 Months Of Insider Transactions At Comcast

Notably, that recent sale by Brian Roberts is the biggest insider sale of Comcast shares that we've seen in the last year. That means that even when the share price was slightly below the current price of US$43.19, an insider wanted to cash in some shares. When an insider sells below the current price, it suggests that they considered that lower price to be fair. That makes us wonder what they think of the (higher) recent valuation. Please do note, however, that sellers may have a variety of reasons for selling, so we don't know for sure what they think of the stock price. This single sale was just 2.0% of Brian Roberts's stake.

In the last year Comcast insiders didn't buy any company stock. 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!

If you like to buy stocks that insiders are buying, rather than selling, then you might just love this free list of companies. (Hint: Most of them are flying under the radar).

Does Comcast Boast High Insider Ownership?

Another way to test the alignment between the leaders of a company and other shareholders is to look at how many shares they own. Usually, the higher the insider ownership, the more likely it is that insiders will be incentivised to build the company for the long term. Comcast insiders own about US$1.6b worth of shares (which is 1.0% of the company). 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 Do The Comcast Insider Transactions Indicate?

Insiders sold stock recently, but they haven't been buying. And even if we look at the last year, we didn't see any purchases. On the plus side, Comcast makes money, and is growing profits. The company boasts high insider ownership, but we're a little hesitant, given the history of share sales. While it's good to be aware of 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. While conducting our analysis, we found that Comcast has 2 warning signs and it would be unwise to ignore these.

If you would prefer to check out another company -- one with potentially superior financials -- then do not miss this free list of interesting companies, that have HIGH return on equity 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.