Stockholders' Equity

12 Months Ended

Dec. 31, 2021

Equity [Abstract]

Stockholders' Equity

Stockholders’ Equity

Common Stock

As of December 31, 2021 and 2020, the Company’s certificate of incorporation, as amended and restated, authorized the Company to issue 150,000,000 shares of $0.0001 par value common stock.

Each share of common stock entitles the holder to one vote on all matters submitted to a vote of the Company’s stockholders. Common stockholders are entitled to receive dividends, as may be declared by the board of directors, if any, subject to the preferential dividend rights of any outstanding preferred stock. No dividends have been declared or paid by the Company through December 31, 2021.

As of December 31, 2021 and 2020, the Company had reserved 32,934,776 and 22,728,991 shares, respectively, of common stock for the exercise of outstanding stock options, the vesting of restricted stock units, shares to be issued under the 2021 and 2020 ATM Facilities, shares to be issued upon the conversion of the Loan Agreement, as amended (defined below), and the number of shares remaining available for future grant under the Company’s 2018 Stock Option and Incentive Plan and 2018 Employee Stock Purchase Plan.

Reserved for future issuance

The Company has reserved for future issuance the following number of shares of common stock:

	As of December 31,
	2021	2020
Options to purchase common stock	7,057,258	6,011,126
Shares available for future grant	783,873	664,544
RSU's issued and expecting to vest	—	1,043,300
2018 Employee Stock Purchase Plan	1,084,476	724,305
Shares available for conversion of note payable	832,677	1,282,052
Shares available for ATM offering	23,176,492	13,003,664
Total reserved	32,934,776	22,728,991

In August 2021, the Company entered into the Amended Sales Agreement with JonesTrading, which amends the 2020 Sales Agreement to issue and sell up to $80,000 in shares of the Company's common stock from time to time. As of December 31, 2021, the Company has sold 1,433,627 shares of common stock at-the-market under the 2021 ATM Facility for net proceeds of $10,046.

In May 2020, the Company entered into the 2020 Sales Agreement with JonesTrading to issue and sell shares up to $50,000 in shares of the Company's common stock from time to time. As of December 31, 2021, the Company has sold 2,303,545 shares of common stock at-the-market under the 2020 ATM Facility for net proceeds of $19,479. As of August 2021, the Company had closed the 2020 ATM Facility.

In May 2019, the Company entered into the 2019 Sales Agreement with JonesTrading to issue and sell shares up to $30,000 in shares of the Company’s common stock from time to time. As of December 31, 2021, the Company has sold 11,229,174 shares under the 2019 ATM Facility for net proceeds of $29,110. As of May 2020, the Company had fully utilized and closed the 2019 ATM Facility.