Stockholders' Equity | Note 9. Stockholders Equity During the six months ended June 30, 2016 pursuant to a securities purchase agreement between us and certain accredited investors, we sold 7,561,818 shares of our common stock (Shares) and warrants to purchase up to 3,780,909 Shares (Warrants) for aggregate gross proceeds to us of $6,049,456. The financing consists of two components: a new equity raise in the amount of $3, 570,000 and the conversion into common equity of $2, 479,456 of principal and interest of convertible promissory notes previously issued. See discussion in Note 6. The Warrants are exercisable for a term of five-years at a per Share price of $1.00. The fair value of the warrants, $2,012,168, was estimated at the date of grant using the Black-Scholes option pricing model, with an allocation of the proceeds applied to the warrants. The fair value of the warrants has been included in the total additional paid in capital. The following assumptions were used in the Black-Scholes option pricing model: Expected life (in years) 5 Volatility (based on a comparable company) 78.12 % Risk Free interest rate 1.23 % Dividend yield (on common stock) - In addition, we had previously recorded debt discount on the convertible promissory note discussed above. As a result of the conversion we wrote off the remaining balance, $443,422, against additional paid in capital. Also, during the six months ended June 30, 2016, we issued 210,455 shares of our common stock upon the conversion of outstanding convertible debt, not included in the equity raise described above, representing $50,000 in principal and $2,613.70 in interest. During the six months ended June 30, 2016, the holder of warrants to purchase shares of common stock exercised their rights and purchased 500,000 shares of common stock for an aggregate price of $265,000. In addition the holders of 100,000 warrants exercised their right to a cash-less conversion and received 80,420 shares. Also during the six months ended June 30, 2016 we issued 64,599 shares of stock to a member of our board of directors in lieu of $50,000 in director fees due and 60,878 shares of common stock in lieu of cash for legal fees. We valued the shares based on the trading value on the date issued. In addition during the 6 months ended June 30, 2016 we issued 50,000 shares of stock at a price of $0.51 per share in exchange for outstanding options. During the six months ended June 30, 2016, we issued 1,262,000 options to purchase our common stock to employees of the Company. The exercise price of the options ranged from $0.6129 to $0.83 per share, and are exercisable for a period of 8 years and vest on the third anniversary of issuance. The fair value of the options ($528,280 in the aggregate) was calculated using the Black-Sholes option pricing model, based on the criteria shown below, and are being expensed over the vesting period of each option. Expected life (in years) 5.5 to 8 Volatility (based on a comparable company) 75.81% to 77.31 % Risk Free interest rate 1.49% to 1.73 % Dividend yield (on common stock) - The total amount of equity based compensation for the three and six month periods ended June 30, 2016 included in additional paid in capital was $270,252 and $515,041, respectively. The following is a summary of outstanding stock options issued to employees and directors as of June 30, 2016: Number of Options Exercise price per share $ Average remaining term in years Aggregate intrinsic value at date of grant $ Outstanding December 31, 2015 3,575,000 0.50 - 210,000 Issued 1,262,000 0.61-0.83 7.91 - Cancelled - - - - Exercised (50,000 ) 0.51 Outstanding June 30, 2016 4,787,000 0.45 -0.87 5.88 210,000 Exercisable 1,580,000 0.45 -0.80 2.47 - |