Stock options and warrants | Note 6. Stock options and warrants: The Company currently provides stock-based compensation to employees, directors and consultants, both under the Company’s 2002 Stock Incentive Plan, as amended (the “Plan”) and non-qualified options and warrants issued outside of the Plan. During September 2015, the Company’s shareholders approved amendments to the Plan to increase the number of shares reserved under the Plan from 3,673,127 to 5,673,127 The Company’s determination of the estimated fair value of share-based payment awards on the date of grant is affected by the following variables and assumptions: · The grant date exercise price – the closing market price of the Company's common stock on the date of the grant; · Estimated option term – based on historical experience with existing option holders; · Estimated dividend rates – based on historical and anticipated dividends over the life of the option; · Term of the option – based on historical experience, grants have lives of approximately 3-5 years; · Risk-free interest rates – with maturities that approximate the expected life of the options granted; · Calculated stock price volatility – calculated over the expected life of the options granted, which is calculated based on the daily closing price of the Company's common stock over a period equal to the expected term of the option; and · Option exercise behaviors – based on actual and projected employee stock option exercises and forfeitures. The Company recognized stock-based compensation during the years ended December 31, as follows: 2015 2014 2013 Stock options to employees, officers, and directors $ 1,143,078 $ 1,055,250 $ 1,436,572 Stock options to consultants for: APPY - 510 1,293 Total stock-based compensation $ 1,143,078 $ 1,055,760 $ 1,437,865 The above expenses are included in the accompanying Statements of Operations for the years ended December 31, in the following categories: 2015 2014 2013 Selling, general and administrative expenses $ 1,016,011 $ 991,088 $ 1,298,942 Research and development expenses 127,067 64,672 138,923 Total stock-based compensation $ 1,143,078 $ 1,055,760 $ 1,437,865 Stock incentive plan options: The Company currently provides stock-based compensation to employees, directors and consultants under the Plan. The Company utilized assumptions in the estimation of fair value of stock-based compensation for the years ended December 31, as follows: 2015 2014 2013 Dividend yield 0% 0% 0% Expected price volatility 93% 94 to 126% 127 to 128% Risk free interest rate 1.39% 1.52 to 1.74% .65 to .76% Expected term 5 years 5 years 5 years A summary of stock option activity under the Plan for options to employees, officers, directors and consultants, for the year ended December 31, 2015, is presented below: Shares Underlying Options Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at January 1, 2015 1,854,258 $ 5.79 Granted 1,094,500 1.89 Exercised - - Forfeited (288,791 ) 3.58 Outstanding at December 31, 2015 2,659,967 $ 4.42 7.8 $ - Exercisable at December 31, 2015 2,393,238 $ 4.70 7.7 $ - The aggregate intrinsic value in the table above represents the total intrinsic value (the difference between the Company’s closing stock price on December 31, 2015 and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders, had all option holders been able to, and in fact had, exercised their options on December 31, 2015. During the year ended December 31, 2014, incentive stock options were exercised to purchase 39,079 common shares, resulting in total proceeds of approximately $82,000 and with a total intrinsic value when exercised of approximately $14,000. During the year ended December 31, 2015, 344,000 options were issued to non-employee directors under the Plan, with an exercise price of $1.89 per share. The options expire ten years from the date of grant and vest over one year, based upon 25% on the date of grant, and 25% on each of April 1, 2015, July 1, 2015, and October 1, 2015. During the year ended December 31, 2015, 750,500 options were issued to officers and employees under the Plan, exercisable at an average of $1.89 per share. The options expire ten years from the date of grant and vest over two years with 50% vesting upon six month anniversary of grant date and the remaining balance vesting over the following six quarters in arrears. During the year ended December 31, 2015, a total of 288,791 options that were granted under the Plan were forfeited, of which 63,150 were vested and 225,641 were unvested. The vested options were exercisable at an average of $9.04 per share and the unvested options were exercisable at an average of $2.06 per share. During the year ended December 31, 2014, 221,000 options were issued to non-employee directors under the Plan, exercisable at an average of $2.27 per share. The options expire ten years from the date of grant and vest over one year, based upon 25% on the date of grant, and 25% on each of April 1, 2014, July 1, 2014, and October 1, 2014. During the year ended December 31, 2014, 506,100 options were issued to officers, employees and a consultant under the Plan, exercisable at an average of $2.29 per share. The options expire ten years from the date of grant and 431,100 of the options vest over two years with 50% vesting upon six month anniversary of grant date and the remaining balance vesting over the following six quarters in arrears, and 75,000 vest annually in arrears over three years from grant date. During the year ended December 31, 2014, a total of 52,028 options that were granted under the Plan were forfeited, of which 46,978 were vested and 5,050 were unvested. The vested options were exercisable at an average of $30.78 per share and the unvested options were exercisable at an average of $2.15 per share. During the year ended December 31, 2013, 525,603 options were granted under the Plan to employees, officers, directors and consultants with a weighted average exercise price at grant date of $2.06 per option. Included in the 525,603 options issued, the non-employee directors were granted a total of 209,333 options at an average exercise price of $2.10 per share of which the majority vest quarterly over a one-year period, officers were granted 292,000 options at an average exercise price of $2.04 per share vesting over a twenty-four month period and employees were granted 24,270 options at an average exercise price of $2.02 per share, the majority of which vest over a twenty-four month period following grant. All options were granted under the Company’s 2002 Stock Incentive Plan and expire ten years from the grant date. During the year ended December 31, 2013, a total of 15,278 options that were granted under the Plan to employees were forfeited, 6,086 of which were vested. The options were exercisable at an average of $24.68 per share and were forfeited upon the employees’ terminations from the Company or the expiration of the term of the options. During the year ended December 31, 2013, no options were exercised. The total fair value of stock options granted to employees, directors and consultants that vested and became exercisable during the years ended December 31, 2015, 2014 and 2013, was $1,344,000, $1,266,000 and $1,963,000, respectively. Based upon the Company’s experience, approximately 85% of the outstanding stock options, or approximately 227,000 options, are expected to vest in the future, under their terms. A summary of the activity of non-vested options under the Company’s Plan to acquire common shares granted to employees, officers, directors and consultants during the year ended December 31, 2015 is presented below: Nonvested Shares Nonvested Shares Underlying Options Weighted Average Exercise Price Weighted Average Grant Date Fair Value Nonvested at January 1, 2015 319,652 $ 2.28 $ 1.85 Granted 1,094,500 1.89 1.34 Vested (921,782 ) 1.97 1.46 Forfeited (225,641 ) 2.06 1.49 Nonvested at December 31, 2015 266,729 $ 1.94 $ 1.43 At December 31, 2015, based upon employee, officer, director and consultant options granted, there was approximately $219,000 additional unrecognized compensation cost related to stock options that will be recorded over a weighted average future period of approximately one year. Other common stock purchase options and warrants: As of December 31, 2015, in addition to the stock options issued under the Plan as discussed above, the Company had outstanding non-qualified options and warrants to acquire 3,455,935 shares of common stock. These options and warrants include those issued in connection with stock offerings, officers’ employment inducement awards and investor relations consulting. During the years ended December 31, 2015 and 2014, no stock options were granted outside of the Plan. During the year ended December 31, 2013, warrants to acquire 4,025,000 shares of common stock were issued in connection with a public offering. Each warrant issued represents the right to acquire 0.35 of a share of common stock. There were no stock-based compensation operating expenses related to other common stock purchase options and warrants for the years ended December 31, 2015 and 2014. Stock-based compensation operating expenses related to other common stock purchase options and warrants for the year ended December 31, 2013 include approximately $22,000 related to non-qualified options. Following is a summary of outstanding options and warrants that were issued outside of the Plan for the year ended December 31, 2015: Shares Underlying Options / Warrants Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at January 1, 2015 3,455,935 $ 1.93 Granted — — Exercised — — Forfeited — — Outstanding and exercisable at December 31, 2015 3,455,935 $ 1.93 2.3 $ — The aggregate intrinsic value in the table above represents the total intrinsic value (the difference between the Company’s closing stock price on December 31, 2015 and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders, had all option holders been able to, and in fact had, exercised their options on December 31, 2015. Included at December 31, 2015 in the 3,455,935 total outstanding options and warrants are 3,435,935 non-compensatory rights, exercisable at an average of $1.93 per common share, expiring through May 2018, granted in connection with public offerings and 20,000 rights, exercisable at $3.42 per common share, expiring in May 2022, issued under compensatory arrangements. During the year ended December 31, 2014, warrants from the May 2013 public offering were exercised to purchase 1,161,570 shares of common stock at $1.36 per share resulting in total proceeds of approximately $1,580,000. In May 2013, the Company completed a $14.4 million public offering of securities and, in connection with that offering, granted investors in the offering warrants to purchase a total of 4,025,000 shares of common stock at an exercise price of $1.36 per share and expiring in May 2018. The total fair value of stock options granted that vested and became exercisable during each of the years ended December 31, 2015 and 2014 was zero, and for the year ended December 31, 2013 totaled $24,000. |