Total share-based expense related to stock options, restricted stock units (“RSUs”) and common stock awards were approximately $0.1 million and $0.2 million during the three months ended September 30, 2020 and 2019, respectively, and approximately $0.4 million and $0.7 million for the nine months ended September 30, 2020 and 2019, respectively.

Share-based compensation expense is classified in the condensed consolidated statements of operations as follows:

Employee Stock Options

There were no employee stock options or RSUs granted or exercised during the nine months ended September 30, 2020. During the three and nine months ended September 30, 2019, the Company granted 50,000 stock option awards. The weighted average grant date fair value per option share was $1.18. Key assumptions used in the Black-Scholes option pricing model for options granted during the three and nine months ending September 30, 2019 were the Company’s stock price, a risk free rate of 1.60%, an expected life of 5.5 years and an expected volatility of 119.11%. There were no employee stock options exercised during the nine months ended September 30, 2019. The Company recognized a total of $0.1 million and $0.2 million of compensation expense related to employee stock options during the three months ended September 30, 2020 and 2019, respectively, and $0.4 million and $0.7 million during the nine months ended September 30, 2020 and 2019, respectively.

Non-Employee Stock Options

The Company did not grant any non-employee stock options during the nine months ended September 30, 2020 and 2019. There were no non-employee stock options exercised during the nine months ended September 30, 2020 and 2019. The Company recognized approximately $4,000 and $11,000 of expense during the three and nine months ended September 30, 2020, respectively. The Company did not recognize any expense related to non-employee stock options during the three and nine months ended September 30, 2019, respectively.

Common Stock Awards

During the three and nine months ended September 30, 2019, the Company granted 7,153 and 9,026 common stock awards, respectively, based on the value of the professional services provided and the average stock price during the respective periods. As all services were rendered during the three and nine months ended September 30, 2019, approximately $15,000 and $47,000 of expense related to common stock awards was recognized, respectively. There were no common stock awards granted during the three and nine months ended September 30, 2020. During the nine months ended September 30, 2020, the Company issued 1,188 shares related to these awards. As of September 30, 2020, there were 7,406 common stock awards authorized but not issued.