Stockholders’ Equity

3 Months Ended

Mar. 31, 2019

Stockholders Equity Note [Abstract]

Stockholders’ Equity

9. Stockholders’ Equity

Preferred Stock

The Company issued Series 1 redeemable convertible preferred stock, Series 2 redeemable preferred  stock,  Series  AA  redeemable  convertible  preferred  stock, Series B redeemable convertible preferred stock, Series C-1 redeemable convertible preferred stock, Series C-2 redeemable convertible preferred stock, Series C-3 redeemable convertible preferred stock, and Series D convertible preferred stock (collectively, “PreferredStock”). Upon the closing of the IPO on October 22, 2018, all shares of Preferred Stock were automatically converted into an aggregate of 13,200,115 shares of common stock.