Monday 4/11 Insider Buying Report: LIFE, UBA (4/11, 10:31 AM ET) -- 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 aTyr Pharma (LIFE), a filing with the SEC revealed that on Wednesday, Director Paul Schimmel bought 25,000 shares of LIFE, at a cost of $3.20 each, for a total investment of $80,000. Schimmel was up about 12.8% on the purchase at the high point of today's trading session, with LIFE trading as high as $3.61 in trading on Monday. aTyr Pharma is trading up about 9.4% on the day Monday. Before this latest buy, Schimmel bought LIFE at 2 other times during the past year, for a total investment of $215,702 at an average of $3.32 per share.

And also on Wednesday, Chairman Charles J. Urstadt bought $61,500 worth of Urstadt Biddle Properties (UBA), buying 3,000 shares at a cost of $20.50 a piece. Before this latest buy, Urstadt bought UBA on 2 other occasions during the past twelve months, for a total cost of $869,360 at an average of $19.07 per share. Urstadt Biddle Properties is trading up about 1.2% on the day Monday. Urstadt was up about 1.6% on the buy at the high point of today's trading session, with UBA trading as high as $20.83 at last check today.

For MarketNewsVideo.com, I'm Sayoko Murase.