Though its been a while since I covered insider buying here, the recent liquidity crisis has not stopped insiders at some microcap companies from calling their brokers. Here are a few notable recent buys:

Gray Television [[GTN]]: The family Robinson has made dozens of purchases over the past few months, totaling hundreds of thousands of dollars. I’m not crazy about the television business, but this one may be worth watching.

IMAX Corp. [[IMAX]]: Not deterred by the recent restatement, investor James Douglas keeps buying shares. I’m more concerned with the profits. I’ll wait until the company puts in a good quarter or two before considering following in Douglas’s footsteps.

MGT Capital Investments [[MGT]]: Chairman & CEO Tim Paterson Brown bought 1.25M shares recently in two private transactions. Though the size is significant, non-market purchases need to be viewed with a degree of skepticism. Just as it means an insider was purchasing, it also means a private investor thought it was time to dump a huge amount of shares.

Nano Proprietary (NNPP.OB): This nanotech IP company was once a darling of daytraders but has since seen nothing but scorn from investors. Two insider buys, though smallish, may signal a pending turnaround.

Plug Power [[PLUG]]: Mining giant Norilsk Nickel continues to build its position in this microcap fuel cell company. Is a buyout brewing?

Prospect Capital [[PSEC]]: Insiders are scooping up shares of this company, which used to be called Prospect Energy. The financial services it offers — mezzanine finance, bridge loans, and private equity — have caused many companies distress in past months. However, Prospect finances energy companies, which have been red hot. Investors are betting that Prospect will escape the liquidity crunch unscathed.

Unify Corp. (UFYC.OB): Turnaround investors Austin Marxe and David Greenhouse added almost 100,000 shares in two separate buys in September and October, bringing their ownership to 1,379,577 shares, or nearly a quarter of all outstanding. From the look of the chart, Marxe & Greenhouse may be on to something.

Yukon Gold Corp. (YDFG.OB): Director Jose Guerra just bought 447,500 shares for $134,000 of this gold company, which I had not heard of before today. He has bought more in the past at higher prices, so Guerra’s buy may not hold a lot of predictive value. Still, its his largest buy thus far so it is at least a significant vote of confidence.

DISCLOSURE: No positions.

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