|3 Months Ended|
Mar. 31, 2022
|Stockholders' Equity Note [Abstract]|
Note 5 - Equity
In August 2020 the Company entered into the Capital on Demand™ Sales Agreement with JonesTrading Institutional Services LLC, or JonesTrading, pursuant to which the Company may sell, from time to time, through or to JonesTrading, up to an aggregate of $200 million of its common stock. Shares of common stock are offered pursuant to a shelf registration statement on Form S-3 filed with the SEC on August 7, 2020. As of December 31, 2021, the Company had sold 6.7 million shares of common stock, resulting in gross proceeds of $59.1 million and net proceeds of $57.0 million. For the three months ended March 31, 2022, there were no sales of shares of common stock. For the three months ended March 31, 2021, the Company sold 1.7 million shares of common stock, resulting in gross proceeds of $14.8 million and net proceeds of $14.4 million.
The following is a summary of stock option activity for the three months ended March 31, 2022:
During the three months ended March 31, 2022, the Company granted new employees options to purchase 5 thousand shares of common stock with an exercise price ranging from $5.20 to $5.93 per share, a term of 10 years, and a vesting period of 4 years. The options have an aggregated fair value of $22 thousand that was calculated using the Black-Scholes option-pricing model. Variables used in the Black-Scholes option-pricing model include: (1) discount rate range from 1.52% to 1.96% (2) expected life of 6 years, (3) expected volatility range from 78.8% to 80.0%, and (4) zero expected dividends.
The fair values of all options issued and outstanding are being amortized over their respective vesting periods. The unrecognized compensation expense at March 31, 2022 was $4.4 million related to unvested options, which is expected to be expensed over a weighted average of 3.1 years. During the three months ended March 31, 2022 and 2021, the Company recorded compensation expense related to stock options of $0.4 million and $0.4 million, respectively.
Following is a summary of warrant activity for the three months ended March 31, 2022:
The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef