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12. STOCK-BASED COMPENSATION
3 Months Ended
Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
12. STOCK-BASED COMPENSATION

Pursuant to the Company’s Amended and Restated 2007 Equity Incentive Plan, the aggregate number shares of the Company’s common stock available for grant of stock options and issuance is 4,341,989 shares.

 

The fair value of each option award below is estimated on the date of grant using the Black-Scholes option-pricing model. The risk free rate is based on the yield-to-maturity in continuous compounding of the US Government Bonds with the time-to-maturity similar to the expected tenor of the option granted, volatility is based on the annualized historical stock price volatility of the Company, and the expected life is based on the estimated average of the life of options using the “simplified” method, as prescribed in FASB ASC 718, due to insufficient historical exercise activity during recent years as a basis from which to estimate future exercise patterns.

 

In early March 2014, the Company granted to an independent director an option to purchase 12,500 shares of the Company’s common stock at an exercise price of $2.55 per share and the options vested immediately. The options were valued at $10,200 fair value, with assumed 67.14% volatility, a three-year expiration term with expected tenor of 1.49 years, a risk free rate of 0.21% and no dividend yield. For the three-month period ended March 31, 2014, $10,200 was recognized as general and administrative expenses.

 

During the three-month period ended March 31, 2014, 145,813 shares of common stock were issued upon cashless exercise of 223,000 options.

  

The following table summarizes all Company stock option transactions between January 1, 2014 and March 31, 2014.

 

   

Number of Option

and Warrants

Outstanding and exercisable

   

Weighted- Average Exercise price of Option

and Warrants

   

Range of

Exercise Price per Common Share

Balance, January 1, 2014   2,470,971     $3.36     $0.95 - $12.60

Granted and vested during the year

ended March 31, 2014

  12,500     $2.55     $ $2.55

Exercised during the year ended

March 31, 2014

  (223,000 )   $0.95     $0.95

Expired during the

year ended March 31, 2014

  (37,500 )   $11.05     $9.16-12.00
Balance, March, 2014   2,222,971     $3.45     $0.95 - $12.60

 

 

    Stock and Warrants Options Exercisable and Outstanding
            Weighted Average  
            Remaining  
    Outstanding at March 31, 2014   Range of Exercise Prices   Contractual Life (Years)  
Exercisable and outstanding   2,222,971   $0.95 - $12.60   1.92  

 

The aggregate intrinsic value of options outstanding and exercisable as of March 31, 2014 was $1,614,862.

 

The total intrinsic value of options exercised was $67,274 and $0 for the three-month periods ended March 31, 2014 and 2013.