| Schedule of information about warrants to purchase common stock issued and outstanding |
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Number of
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Exercise
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Year Issued
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Classification
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Warrants
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Price
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Date of Expiration
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2010
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Equity
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343,931
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$
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5.60
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10/26/2017 - 12/3/2017
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2010
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Equity
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306,838
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$
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4.00
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8/30/2017 - 12/3/2017
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2012
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Equity
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6,054
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$
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6.64
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10/5/2019
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2014
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Liability
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587,950
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$
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3.87
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5/9/2019
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2016
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Equity
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2,146,666
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$
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10.00
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3/18/2021
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Total
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3,391,439
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Weighted average exercise price
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$
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7.94
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Weighted average life in years
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3.24
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