The recent insider purchases are heartening. We also take confidence from the longer term picture of insider transactions. Given that insiders also own a fair bit of Valvoline we think they are probably pretty confident of a bright future. 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. In terms of investment risks, we've identified 1 warning sign with Valvoline and understanding it should be part of your investment process.