Annual report pursuant to Section 13 and 15(d)

14. Warrants (Tables)

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14. Warrants (Tables)
12 Months Ended
Dec. 31, 2015
Warrants Tables  
Common stock warrants

The following table summarizes information about common stock warrants outstanding at December 31, 2015:

 

Outstanding     Exercisable  
Exercise Price     Number
Outstanding
    Weighted Average Remaining Contractual Life (years)     Weighted Average Exercise Price     Number Exercisable     Weighted Average Exercise Price  
$ 3.30       11,364       0.36     $ 3.30       11,364     $ 3.30  
  1.25       26,302       0.67       1.25       26,302       1.25  
  1.00       1,642,680       1.44       1.00       1,642,680       1.00  
  0.87       1,303,300       3.36       0.87       1,303,300       0.87  
  0.65       515,000       2.83       0.65       515,000       0.65  
  0.50       12,743,728 *     3.62       0.50       12,743,728       0.50  
  0.48       577,750       2.77       0.48       577,750       0.48  
  0.35       8,887,093 *     3.82       0.35       8,887,093       0.35  
$ 0.50 - $3.30       25,707,217       3.50               25,707,217