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5. Stock Options and warrants (Tables)
6 Months Ended
Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]  
stock purchase options

The following table summarizes certain information about the Company’s stock purchase options from January 1, 2013 to June 30, 2013:

 

Options  Shares   Weighted-
Average
Exercise
Price
   Weighted-
Average
Remaining
Contractual
Term
   Aggregate
Intrinsic
Value
 
Outstanding at January 1, 2013   27,278,098   $0.27           
Granted                  
Exercised   (30,000  $0.30           
Forfeited or expired                  
Outstanding at June 30, 2013   27,248,098   $0.27    7.6   $22,681,207 
Vested and exercisable at June 30, 2013   5,648,098   $0.34    7.6   $1,916,388 

  

Weighted average exercise prices, remaining contractual lives for options granted, exercisable, and expected to vest under the Plan

The weighted average exercise prices, remaining contractual lives for options granted, exercisable, and expected to vest under the Plan as of June 30, 2013 were as follows:

 

    Outstanding Options   Exercisable Options 
Option
Exercise Price Per Share
   Shares   Life
(Years)
   Weighted
Average
Exercise
Price
   Shares  

Weighted

Average

Exercise

Price

 
$ 0.21 - $ 0.99    27,166,679    7.6   $0.27    5,566,679   $0.32 
$ 1.00 - $ 1.99    81,419    2.3    1.36    81,419    1.26 
      27,248,098    7.6   $0.27    5,648,098   $0.34 
Stock purchase warrants

The following table summarizes certain information about the Company’s stock purchase warrants from January 1, 2013 to June 30, 2013:

 

Warrants  Shares   Weighted-
Average
Exercise
Price
   Weighted-
Average
Remaining
Contractual
Term
   Aggregate
Intrinsic
Value
 
Outstanding at January 1, 2013   42,205,507   $0.31           
Granted   150,000    0.30           
Exercised   (19,907,130)   0.29           
Forfeited or expired   (958,723)   0.35           
Outstanding at June 30, 2013   21,489,654   $0.32    2.0   $18,752,321 
Vested and exercisable at June 30, 2013   20,206,320   $0.32    1.6   $17,781,988 

 

     Outstanding Warrants   Exercisable Warrants 
Warrant
Exercise Price Per Share
   Shares   Life
(Years)
   Weighted
Average
Exercise
Price
   Shares  

Weighted

Average

Exercise

Price

 
$ 0.25 - $ 0.99    20,989,654    2.0   $0.30    19,706,320   $0.30 
$ 1.00 - $ 1.99    500,000    1.0    1.00    500,000    1.00 
      21,489,654    2.0   $0.32    20,206,320   $0.32