Convertible Preferred Stock	12 Months Ended
Dec. 31, 2021
Stockholders Equity Note [Abstract]
Convertible preferred stock	10. Convertible preferred stock Series A-1, A-2, and B convertible preferred stock financings In 2018 and 2019, the Company issued 67.5 million shares of its Series A-1 and Series A-2 convertible preferred stock at a price of $4.00 per share, for gross proceeds of $269.9 million. In 2020, the Company issued 27.2 million shares of Series B convertible preferred stock at $16.00 per share for gross proceeds of $435.5 million. In December 2020, the Company amended and restated its certificate of incorporation and amended the investors’ rights agreement and voting agreement with its stockholders. Under the Company’s amended and restated certificate of incorporation, the authorized capital stock of the Company increased to 707.0 million shares. The authorized shares consisted of 169.2 million shares designated as common stock and 537.8 million shares designated as convertible preferred stock, each with a par value of $0.0001 per share.

Convertible Preferred Stock

12 Months Ended

Dec. 31, 2021

10. Convertible preferred stock

Series A-1, A-2, and B convertible preferred stock financings

In 2018 and 2019, the Company issued 67.5 million shares of its Series A-1 and Series A-2 convertible preferred stock at a price of $4.00 per share, for gross proceeds of $269.9 million. In 2020, the Company issued 27.2 million shares of Series B convertible preferred stock at $16.00 per share for gross proceeds of $435.5 million.

In December 2020, the Company amended and restated its certificate of incorporation and amended the investors’ rights agreement and voting agreement with its stockholders. Under the Company’s amended and restated certificate of incorporation, the authorized capital stock of the Company increased to 707.0 million shares. The authorized shares consisted of 169.2 million shares designated as common stock and 537.8 million shares designated as convertible preferred stock, each with a par value of $0.0001 per share.