Stockholders’ (Deficit) Equity | Note 7 - Stockholders’ (Deficit) Equity Common Stock As of June 30, 2017 and 2016, there were warrants to purchase 4,681,875 and 2,321,875 shares of common stock issued and outstanding, respectively. Stock Options The fair value of the Company’s common stock was based upon the publicly quoted price on the date that the final approval of the awards was obtained. The Company does not expect to pay dividends in the foreseeable future so therefore the expected dividend yield is 0%. The expected term for stock options granted with service conditions represents the average period the stock options are expected to remain outstanding and is based on the expected term calculated using the approach prescribed by the Securities and Exchange Commission’s Staff Accounting Bulletin for “plain vanilla” options. The expected term for stock options granted with performance and/or market conditions represents the period estimated by management by which the performance conditions will be met. The Company obtained the risk-free interest rate from publicly available data published by the Federal Reserve. The Company uses a methodology in estimating its volatility percentage from a computation that was based on a comparison of average volatility rates of similar companies to a computation based on the standard deviation of the Company’s own underlying stock price’s daily logarithmic returns. The grant date fair value of stock options granted during the six months ended June 30, 2017 and 2016 was $611,000 and $223,000, respectively. The fair value of options granted in the six months ended June 30, 2017 and 2016 were estimated using the following weighted-average assumptions: For the Six Months Ended June 30, 2017 2016 Exercise price $ 1.10 $ 0.90 Expected stock price volatility 79 % 80 % Risk-free rate of interest 1.49 % 1.34 % Term (years) 3.0 4.6 A summary of option activity under the Company’s employee stock option plan for the six months ended June 30, 2017 is presented below: Number of Shares Weighted Average Exercise Price Total Intrinsic Value Weighted Average Remaining Contractual Life (in years) Outstanding as of December 31, 2016 1,575,000 $ 0.50 $ 1,264,000 4.7 Employee options granted 500,000 1.10 400,000 4.6 Outstanding as of June 30, 2017 2,075,000 $ 0.65 $ 2,598,000 4.3 Options vested and expected to vest as of June 30, 2017 2,075,000 $ 0.65 $ 2,598,000 4.3 Options vested and exercisable as of June 30, 2017 900,000 $ 0.46 $ 1,292,000 3.4 Estimated future stock-based compensation expense relating to unvested employee stock options is approximately $480,000 as of June 30, 2017 and will be amortized over 3.3 years. A summary of activity of options granted to non-employees for the six months ended June 30, 2017 is presented below: Number of Shares Weighted Average Exercise Price Total Intrinsic Value Weighted Average Remaining Contractual Life (in years) Outstanding as of December 31, 2016 2,955,000 $ 0.27 $ 3,053,000 3.2 Outstanding as of June 30, 2017 2,955,000 $ 0.27 $ 4,815,000 2.7 Options vested and expected to vest as of June 30, 2017 2,955,000 $ 0.27 $ 4,815,000 2.7 Options vested and exercisable as of June 30, 2017 1,767,500 $ 0.30 $ 2,835,000 2.7 Warrants A summary of the status of the Company’s outstanding warrants as of June 30, 2017 and changes during the six months then ended is presented below: Number of Warrants Weighted Average Exercise Price Total Intrinsic Value Weighted Average Remaining Contractual Life (in years) Outstanding as of December 31, 2016 3,271,875 $ 1.02 $ 2,000,000 3.9 Issued 1,410,000 1.72 350,000 5.5 Outstanding as of June 30, 2017 4,681,875 $ 1.23 $ 3,970,000 4.1 Warrants exercisable as of June 30, 2017 4,431,875 $ 1.23 $ 3,795,000 3.9 Stock-based Compensation Expense Stock-based compensation expense for the three and six months ended June 30, 2017 and 2016 was comprised of the following (dollars in thousands): For the Three Months Ended June 30, For the Six Months Ended June 30, 2017 2016 2017 2016 Employee restricted stock awards $ - $ - $ - $ 136 Employee stock option awards 118 55 355 86 Non-employee option awards 70 1,958 710 2,419 Total compensation expense $ 188 $ 2,013 $ 1,065 $ 2,641 |