Common Stock and Preferred Stock

12 Months Ended

Dec. 31, 2021

Equity [Abstract]

Common Stock and Preferred Stock

Common Stock and Preferred Stock

Public Offerings

In March 2019, the Company completed an underwritten public offering of 3,175,000 shares of its common stock, including the exercise in full by the underwriters of their option to purchase 675,000 additional shares of common stock. An additional 2,000,000 shares were sold by a related party stockholder. The Company’s total gross proceeds were $73.0 million. The Company did not receive any proceeds from the sale of shares of common stock by the related party stockholder. After underwriter’s commissions and other expenses of the offering, the Company’s aggregate net proceeds were approximately $68.3 million.

In October 2020, the Company completed an underwritten public offering of 5,750,000 shares of its common stock, including the exercise in full by the underwriters of their option to purchase 750,000 additional shares of common stock. The Company’s total gross proceeds were $230.0 million. After underwriter’s commissions and other expenses of the offering, the Company’s aggregate net proceeds were $215.8 million.

Common Stock

Each share of common stock is entitled to one vote. The holders of common stock are also entitled to receive dividends whenever funds are legally available and when declared by the board of directors, subject to the prior rights of holders of other classes of stock outstanding.

Preferred Stock

Pursuant to the amended and restated certificate of incorporation filed by the Company immediately prior to the completion of its initial public offering, the Company’s board of directors is authorized to issue up to 15,000,000 shares of preferred stock in one or more series and to fix the rights, preferences, privileges and restrictions thereof. These rights, preferences and privileges could include dividend rights, conversion rights, voting rights, redemption rights, liquidation preferences, sinking fund terms and the number of shares constituting any series or the designation of such series, any or all of which may be greater than the rights of common stock. The issuance of preferred stock could adversely affect the voting power of holders of common stock and the likelihood that such holders will receive dividend payments and payments upon liquidation. In addition, the issuance of preferred stock could have the effect of delaying, deferring or preventing change in the Company’s control or other corporate action. As of December 31, 2021, no shares of preferred stock were issued or outstanding, and the board of directors has not authorized or designated any rights, preferences, privileges and restrictions for any class of preferred stock.

Warrants

Prior to the Company’s initial public offering, warrants to purchase preferred stock were issued related to certain financing transactions. All preferred stock warrants were converted into warrants to purchase common stock upon the effectiveness of the initial public offering. In addition, the Company has issued common stock warrants to third parties in accordance with the provisions of certain debt and collaboration agreements. As of December 31, 2021, there were 470,510 common stock warrants outstanding with a weighted average exercise price of $24.70 per share and expiration dates in 2025.