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Net Loss Per Share
 6 Months Ended
Jun. 30, 2014
Net Loss Per Share

(2) Net Loss Per Share

The Company calculates basic earnings per share by dividing loss attributable to common stockholders by the weighted average common shares outstanding during the period, excluding common stock subject to vesting provisions. Diluted earnings per share is computed by dividing loss attributable to common stockholders by the weighted average number of common shares outstanding during the period increased to include, if dilutive, the number of additional common shares that would have been outstanding if the potential common shares had been issued. The Company’s potentially dilutive shares include stock options and warrants for common stock.

A reconciliation of the numerator and denominator used in the calculation of basic and diluted loss per share follows:

 

 

Three Months Ended June 30,

 

 

Six Months Ended June 30,

 

 

2014

 

 

2013

 

 

2014

 

 

2013

 

(In thousands, except shares and per share data)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net loss

$

(2,405

)

 

$

(1,199

)

 

$

(4,794

)

 

$

(2,270

)

Less:  Series A Preferred Stock deemed dividend

 

—

 

 

 

(2,026

)

 

 

—

 

 

 

(2,026

)

Net loss available to common shareholders

$

(2,405

)

 

$

(3,225

)

 

$

(4,794

)

 

$

(4,296

)

Weighted average shares of common stock outstanding

 

21,009,712

 

 

 

4,946,932

 

 

 

19,903,709

 

 

 

3,998,704

 

Less: Weighted-average shares of unvested common stock

 

—

 

 

 

(2,783

)

 

 

—

 

 

 

(2,783

)

Total weighted-average shares used in computing net loss

   per share attributed to common stockholders

 

21,009,712

 

 

 

4,944,149

 

 

 

19,903,709

 

 

 

3,995,921

 

Basic and diluted loss per share

$

(0.11

)

 

$

(0.65

)

 

$

(0.24

)

 

$

(1.08

)

 

 

Potentially dilutive securities representing 11.0 million and 5.2 million weighted average shares of common stock were excluded for the three months ended June 30, 2014 and 2013, respectively, and potentially dilutive securities representing 10.6million and 3.3 million weighted average shares of common stock were excluded for the six months ended June 30, 2014 and 2013, respectively, because including them would have an anti-dilutive effect on net loss per share.