As the saying goes, there are many possible reasons for an insider to sell a stock, but only one reason to buy -- they expect to make money. So let's look at two noteworthy recent insider buys.

At Harsco Corp. (HSC), a filing with the SEC revealed that on Monday, CEO F. Nicholas Grasberger III bought 25,000 shares of HSC, at a cost of $15.76 each, for a total investment of $393,993. Harsco Corp. is trading up about 3.5% on the day Tuesday. Before this latest buy, Grasberger III bought HSC on 2 other occasions during the past twelve months, for a total cost of $1.10M at an average of $22.03 per share.

And at Full Circle Capital Corp (FULL), there was insider buying on Monday, by CEO Gregg J. Felton who bought 66,847 shares for a cost of $3.78 each, for a trade totaling $252,984. Before this latest buy, Felton bought FULL on 4 other occasions during the past year, for a total cost of $1.08M at an average of $6.84 per share. Full Circle Capital Corp is trading up about 1.8% on the day Tuesday. Felton was up about 2.8% on the buy at the high point of today's trading session, with FULL trading as high as $3.89 in trading on Tuesday.