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STOCK OPTION EXERCISES
12 Months Ended
Dec. 31, 2015
STOCK OPTION EXERCISES  
STOCK OPTION EXERCISES

 

13.STOCK OPTION EXERCISES

 

Stock options were exercised at various dates in 2015, 2014, and 2013 and, consequently, a total of 272,477 shares of Common Stock were issued in 2015, 418,195 shares of Common Stock in 2014, and a total of 584,450 shares of Common Stock in 2013 for an aggregate payment of $283,933 in 2015, $398,328 in 2014, and $536,925 in 2013 to exercise such options.  These options were granted in 2008 and 2009 at exercise prices of $0.81 and $1.30.