Recently, various executives have taken part in insider trading activity for the stocks of Cytori Therapeutics Inc (NASDAQ:CYTX), Caladrius Biosciences Inc (NASDAQ:CLBS), FireEye Inc (NASDAQ:FEYE), and Gran Tierra Energy Inc. (NYSEMKT:GTE).

Cytori Therapeutics Inc

Director David Rickey bought 75,000 shares worth $22,500 at an average price of $0.30, as reported in the SEC filing today. Following the insider-buying transaction, his stake in Cytori has now grown to 632,385 shares with a value of $214,695.

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Caladrius Biosciences Inc.

Caladrius has been backed by positive insider activity as the company’s Director, Andrew Pecora, acquired a total of 3,108 shares yesterday, taking his total stake to 377,284 shares. The stock purchase was worth $3,947, at an average price of $1.27 per share.

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FireEye Inc

Chief Strategy Officer Ashar Aziz unloaded 188,434 FireEye shares, valued at $7,085,076, in multiple transactions dated August 25-26. The shares were sold via automatic sale program. Aziz now holds 8,165,483 of the company’s shares that are valued at $30,702,323. According to TipRanks.com, which measures corporate insiders’ success based on their transactions, Ashar Aziz has an average return of 161.9% and a 100% success rate. Aziz is ranked #4746 out of 33712 corporate insiders.

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Gran Tierra Energy Inc

Executive Vice President Duncan Nightingale purchased 11,600 shares, valued $22,388 on August 24. After completion of the transaction, Nightingale owns $161,101 Gran Tierra Energy shares, worth $347,978. According to TipRanks.com, which measures corporate insiders’ success based on their transactions, Duncan Nightingale has an average return of 10.2% and a 100.0% success rate. Nightingale is ranked #14045 out of 33712 corporate insiders.

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