Quarterly report pursuant to Section 13 or 15(d)

Stock Warrants

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Stock Warrants
6 Months Ended
Jun. 30, 2015
Text Block [Abstract]  
Stock Warrants

9. Stock Warrants

As of June 30, 2015 and December 31, 2014, the Company had warrants outstanding as shown in the table below.

 

     June 30,
2015
     December 31,
2014
 

Warrants to purchase common stock

     17,059,672         14,577,361   

Weighted-average exercise price per share

   $ 4.85       $ 4.32   

The following table summarizes information regarding the Company’s warrants outstanding at June 30, 2015:

 

Exercise Prices

   Shares
Underlying
Outstanding
Warrants
     Expiry Date

£ $4.00

     7,025,371       August 31, 2016 –
September 1, 2021

$4.01 - $4.99

     7,069,459       October 31, 2015 –
June 11, 2020

$5.00 - $9.99

     2,776,500       August 6, 2015 –
June 27, 2021

³ $10.00

     188,342       August 31, 2016 –
January 5, 2022
  

 

 

    
     17,059,672