STOCK OPTION PLAN (Tables)
9 Months Ended
Sep. 30, 2012
Fair Value Assumptions of Each Option Award Granted

The following assumptions were used for the nine months ended September 30, 2011 (no options were issued during the three months ended September 30, 2011, or the nine months ended September 30, 2012):

 

   

Nine Months Ended

September 30, 2011

 
Price of Nile stock on date of grants   $ 0.56-0.78  
Expected volatility   97 %
Expected term   3 - 5 years  
Dividend yield   0 %
Risk-free interest rate   0.9-2.2 %

 

Summary of Status of Options Issued and Information with Respect to Changes in Options Outstanding

A summary of the status of the options issued under the Plan at September 30, 2012, and information with respect to the changes in options outstanding is as follows:

 

 

          Options Outstanding  
    Shares     Outstanding     Weighted-     Aggregate  
    Available for     Stock     Average     Intrinsic  
    Grant     Options     Exercise Price     Value  
Balance at January 1, 2012     1,229,574       7,878,994     $ 1.43          
Options granted under the Plan     -       -     $ -          
Options exercised     -       -     $ -          
Options forfeited     1,927,948       (1,927,948 )   $ 2.60          
Balance at September 30, 2012     3,157,522       5,951,046     $ 1.06     $ -  
                                 
Exercisable at September 30, 2012             5,838,546     $ 1.07     $ -
Information about Stock Options Outstanding

The following table summarizes information about stock options outstanding at September 30, 2012:

 

    Outstanding     Exercisable  
Range of
Exercise
Prices
  Shares     Weighted-
Average
Remaining
Contractual Life
    Weighted-Average
Exercise Price
    Total
Shares
    Weighted-
Average
Exercise
Price
 
 $0.30 to $0.57     2,936,533       3.44     $ 0.38       2,824,033     $ 0.38  
 $0.68 to $0.93     1,549,820       5.53     $ 0.82       1,549,820     $ 0.82  
 $1.14 to $2.71     1,104,693       5.92     $ 2.05       1,104,693     $ 2.05  
 $4.45 to $5.75     360,000       4.57     $ 4.60       360,000     $ 4.60  
Total     5,951,046       4.52     $ 1.06       5,838,546     $ 1.07
Employee Stock-based Compensation Costs

Employee stock-based compensation costs for the three and nine months ended September 30, 2012 and 2011 and for the cumulative period from August 1, 2005 (inception) through September 30, 2012 are as follows:

 

    Three months ended September 30,     Nine months ended September 30,     Period from  
                            August 1, 2005 (inception)  
    2012     2011     2012     2011     through September 30, 2012  
                               
General and administrative     51,210       126,897       237,957       351,946       6,800,503  
Research and development     -       122,099       67,286       211,087       1,551,203  
                                         
Total     51,210       248,996       305,243       563,033       8,351,706