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. Insiders own shares in Viking Therapeutics and we see no evidence to suggest they are worried about the 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. Every company has risks, and we've spotted 5 warning signs for Viking Therapeutics (of which 3 don't sit too well with us!) you should know about.