Bargain hunters are wise to pay careful attention to insider buying, because although there are many various reasons for an insider to sell a stock, presumably the only reason they would use their hard-earned cash to make a purchase, is that they expect to make money. Today we look at two noteworthy recent insider buys.

On Thursday, Vishay Precision Group (VPG)'s Director, Wes Cummins, made a $388,112 purchase of VPG, buying 10,000 shares at a cost of $38.81 each. Investors are able to pick up VPG at a price even lower than Cummins did, with the stock trading as low as $38.32 in trading on Tuesday -- that's 1.3% below Cummins's purchase price. Vishay Precision Group is trading up about 0.5% on the day Tuesday. Before this latest buy, Cummins made one other purchase in the past twelve months, buying $341,600 shares at a cost of $34.16 a piece.

And on Friday, Chief Executive Officer H. Michael Krimbill bought $304,540 worth of NGL Energy Partners LP (NGL), buying 200,000 shares at a cost of $1.52 a piece. Before this latest buy, Krimbill made one other purchase in the past year, buying $231,900 shares at a cost of $1.55 each. NGL Energy Partners LP is trading off about 3.4% on the day Tuesday. Bargain hunters have the opportunity to grab NGL at a price even lower than Krimbill did, with shares changing hands as low as $1.40 at last check today -- that's 8.1% under Krimbill's purchase price.