Stockholders' Equity | Note 5 - Stockholders’ Equity Authorized Capital The Company has authorized the issuance and sale of up to 185.0 million shares of stock, consisting of 180.0 million shares of common stock having a par value of $0.001 and 5.0 million shares of Preferred Stock having a par value of $0.001 per share. As of June 30, 2022 and December 31, 2021, there were no shares of Preferred Stock outstanding and there were no declared but unpaid dividends or undeclared dividend arrearages on any shares of the Company’s capital stock. At the Company’s annual meeting of stockholders in June 2022, the stockholders approved an amendment to the Company’s certificate of incorporation to effect a reverse stock split by a ratio not to exceed 1:30, with the exact ratio to be set by the Company’s board of directors in its sole discretion, and approved an amendment to the Company’s certificate of incorporation to effectively increase the number of authorized shares of common stock of the Company. Stock Options The Company has an incentive stock plan, the Amended and Restated 2011 Equity Incentive Plan (the “2011 Plan”), and has granted stock options to employees, non-employee directors and consultants from the 2011 Plan. Options granted under the 2011 Plan may be Incentive Stock Options or Non-statutory Stock Options, as determined by the Administrator at the time of grant. As of June 30, 2022, there were 4.4 million shares remaining available for issuance under the 2011 Plan. During the six months ended June 30, 2022, stock options to purchase 0.4 million shares of common stock were granted at an exercise price of $0.43 per share. The stock options have a term of ten years and are subject to vesting based on continuous service of the awardee over a period of four years. The stock options have an aggregate grant date fair value of $0.1 million. During the six months ended June 30, 2022, stock options to purchase 1.6 million shares of common stock expired, were cancelled and returned to the option pool for future issuance. The Company recorded stock-based compensation as follows: For the Three Months Ended June 30, For the Six Months Ended June 30, 2022 2021 2022 2021 Research and development $ 17,601 $ 119,627 $ 46,409 $ 176,730 General and administrative 417,355 837,931 844,970 1,101,272 Total $ 434,956 $ 957,558 $ 891,379 $ 1,278,002 The following table represents stock option activity for the six months ended June 30, 2022: Weighted Average Stock Options Exercise Price Fair Value Contractual Aggregate Outstanding Exercisable Outstanding Exercisable Vested Life (Years) Intrinsic Value Balance – December 31, 2021 10,992,335 6,126,901 $ 1.71 $ 1.58 $ 1.58 6.27 $ - Granted 375,000 - - - - - - Exercised - - - - - - - Cancelled (1,591,083 ) - - - - - - Balance – June 30, 2022 9,776,252 5,579,545 $ 1.64 $ 1.46 $ 1.46 6.26 $ - The following table summarizes information on stock options outstanding and exercisable as of June 30, 2022: Grant Price Weighted Average Total Number Weighted From To Exercise Price Outstanding Exercisable Contractual Term $ 0.26 $ 2.02 $ 1.17 7,923,085 3,830,440 7.65 years $ 2.10 $ 4.60 $ 2.74 1,410,167 1,306,105 5.71 years $ 5.30 $ 8.86 $ 6.44 443,000 443,000 5.85 years Totals 9,776,252 5,579,545 Warrants During the six months ended June 30, 2022, warrants to purchase 0.2 million shares of common stock expired and were cancelled. The following table summarizes information on warrants outstanding as of June 30, 2022: Weighted Average Warrants Exercise Price Fair Contractual Aggregate Outstanding Exercisable Outstanding Exercisable Value Life Intrinsic Balance – December 31, 2021 35,634,075 35,629,908 $ 1.04 $ 1.04 $ 0.53 4.38 $ - Granted - - - - - - - Exercised - - - - - - - Cancelled (159,000 ) - - - - - - Balance – June 30, 2022 35,475,075 35,475,075 $ 1.03 $ 1.03 $ 0.61 3.90 $ - |