| NET LOSS PER SHARE OF COMMON STOCK, BASIC AND DILUTED |
3. Net Loss Per Share of Common Stock, Basic and Diluted
The following table sets forth the computation of basic and diluted net loss per share of common stock for the years ended December 31, 2015, 2014 and 2013:
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Year ended
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Year ended
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Year ended
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December 31,
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December 31,
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December 31,
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Net loss per share, basic and diluted calculation:
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2015
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2014
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2013
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Net loss
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$
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(10,490,103)
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$
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(16,055,591)
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$
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(13,045,008)
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Extinguishment upon modification of Series A and A-1 convertible preferred stock
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—
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12,534,438
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—
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Deemed dividend
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—
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—
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(81,964)
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Net loss attributable to common stockholders
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$
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(10,490,103)
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$
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(3,521,153)
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$
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(13,126,972)
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Weighted-average common shares outstanding
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2,226,023
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642,052
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633,669
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Net loss per share, basic and diluted
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$
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(4.71)
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$
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(5.48)
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$
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(20.72)
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The following outstanding securities at December, 31, 2015, 2014 and 2013 have been excluded from the computation of diluted weighted shares outstanding, as they would have been anti‑dilutive:
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December 31,
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December 31,
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December 31,
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2015
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2014
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2013
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Series A convertible preferred stock
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—
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31,116,391
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31,116,391
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Series A-1 convertible preferred stock
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—
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9,074,511
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9,074,511
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Series B convertible preferred stock
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—
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58,948,735
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—
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Common stock dividends on Series A-1 convertible preferred stock
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—
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—
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2,846
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Unvested restricted stock
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—
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—
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7,142
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Stock options
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959,188
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552,726
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381,669
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Warrants on common stock
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7,400,934
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681,858
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512,686
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Warrants on preferred stock
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—
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625,208
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—
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Investor rights obligation
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—
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53,351,117
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—
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Underwriters' unit purchase option
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40,000
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—
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—
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