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Stock-Based Compensation (Tables)
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9 Months Ended |
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Sep. 30, 2014
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| Stock-Based Compensation [Abstract] |
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| Summary Of Stock Compensation Expense |
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Three Months Ended September 30,
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Nine Months Ended September 30,
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2014
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2013
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2014
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2013
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Statement of operations line item:
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General and administrative
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$
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128,945
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$
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53,459
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$
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307,461
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$
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448,266
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Research and development
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34,246
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14,256
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116,598
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45,771
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Total
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$
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163,191
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$
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67,715
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$
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424,059
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$
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494,037
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| Schedule Of Assumptions Made In Calculating The Fair Value Of Options |
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Nine Months Ended September 30,
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2014
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2013
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Black-Scholes weighted average assumptions
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Expected dividend yield
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0
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%
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0
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%
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Expected volatility
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92-96
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%
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94-96
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%
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Risk free interest rate
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1.49-1.75
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%
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0.75-1.39
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%
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Expected term (in years)
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5 years
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5 years
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| Summary Of Employee And Non-Employee Transactions |
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2014
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2013
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Number of Options
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Weighted Average Exercise Price
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Number of Options
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Weighted Average Exercise Price
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Outstanding at
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January 1
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9,356,795
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$
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0.92
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7,741,795
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$
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1.03
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Granted
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2,398,499
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0.97
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2,425,000
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0.39
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Exercised
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(448,693)
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0.80
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(375,000)
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0.24
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Expired
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(35,795)
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0.24
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(225,000)
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0.34
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Cancelled
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-
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-
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(85,000)
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0.80
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Outstanding at September 30
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11,270,806
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$
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0.93
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9,481,795
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$
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0.92
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| Summary Of Stock Options Outstanding |
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Number of Options
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Weighted Average Exercise Price
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Weighted Average Remaining Contractual Term
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Aggregate Intrinsic Value
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Outstanding at
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September 30, 2014
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11,270,806
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$
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0.93
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5.4 years
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$
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1,195,693
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Exercisable at
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September 30, 2014
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8,167,307
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$
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0.97
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3.9 years
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$
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889,993
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Outstanding at
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December 31, 2013
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9,356,795
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$
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0.92
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4.8 years
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$
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350,865
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Exercisable at
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December 31, 2013
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7,956,795
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$
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0.99
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4.0 years
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$
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199,795
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| Summary Of Unvested Shares |
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2014
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Number of Options
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Weighted Average Fair Value at Grant Date
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Unvested at January 1, 2014
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1,400,000
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$
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0.34
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Granted
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2,398,499
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$
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0.70
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Vested
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(695,000)
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$
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0.41
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Cancelled
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-
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$
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-
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Unvested at September 30, 2014
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3,103,499
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$
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0.60
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