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| Stockholders' Equity |
6. Stockholders’ Equity Our common stock outstanding as of June 30, 2022 and December 31, 2021 was 14,629,217 shares and 9,914,158 shares, respectively. February 2022 Offerings In February 2022, we completed a registered direct offering with an accredited investor pursuant to which we issued an aggregate of 1,100,000 shares of our common stock and 2,274,242 pre-funded warrants to purchase shares of our common stock, with an exercise price of $0.001 per share. In a concurrent private placement, we sold unregistered pre-funded warrants to purchase an aggregate of 1,289,796 shares of common stock with an exercise price of $0.001 per share and issued unregistered five year and six month warrants to purchase an aggregate of 4,664,038 shares of common stock with an exercise price of $1.14. The net cash proceeds from these offerings were approximately $5.0 million after deduction of underwriting fees and other offering expenses. Warrant Exercises In March 2022, we received approximately $1,000 from the exercise of 974,242 pre-funded warrants issued in the February 2022 registered direct offering. In April 2022, we received approximately $1,300 from the exercise of 1,300,000 pre-funded warrants issued in the February 2022 registered direct offering. In May 2022, we received approximately $1,290 from the exercise of 1,289,796 pre-funded warrants issued in the February 2022 private placement. JT Pharma Milestone In January 2022, we entered into an agreement with JT Pharma to clarify certain provisions of the JT Agreement pursuant to which we agreed that the proof-of-concept milestone provided for in the JT Agreement was achieved and made a payment of $100,000 and issued 51,021 shares of our common stock to JT Pharma. Restricted Shares In August 2021, we agreed to issue 50,000 shares of our common stock pursuant to a restricted stock agreement with Maxim Partners, LLC in connection with the entry into an amendment to our existing advisory agreement. The shares vest monthly over 12 months. We recorded approximately $27,000 and $54,000 of stock-based compensation expense during the three and six months ended June 30, 2022, respectively. The following table summarizes our restricted stock activity:
Annual Meeting of Stockholders In January 2021, our stockholders approved an amendment to the 2015 Omnibus Equity Incentive plan to increase the number of authorized shares to 1,000,000 shares. January 2021 Offering In January 2021, we completed an offering with several accredited institutional investors pursuant to which we issued 2,725,000 shares of our common stock in a registered direct offering and warrants to purchase 2,725,000 shares of our common stock with an exercise price of $3.55 per share in a concurrent private placement. The warrants were exercisable immediately and will expire in July 2026. The net cash proceeds from this offering were approximately $8.8 million after deduction of underwriting fees and other offering expenses. |