CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($)
$ in Thousands
Total
Series A Redeemable Convertible Preferred Stock
Series B Redeemable Convertible Preferred Stock
Series C Redeemable Convertible Preferred Stock
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive (Loss) Income
Accumulated Deficit
Beginning balance at Dec. 31, 2019 $ (192,833)         $ 2 $ 43 $ (192,878)
Temporary equity, Beginning balance, shares at Dec. 31, 2019   33,200,000 20,520,828 20,204,079        
Temporary equity, Beginning balance at Dec. 31, 2019   $ 44,169 $ 81,108 $ 89,507        
Beginning balance, shares at Dec. 31, 2019         2,997,040      
Issuance of Series B redeemable convertible preferred stock in conjunction with sponsored research agreement, shares     62,500          
Exercise of options to purchase common stock 232         232    
Exercise of options to purchase common stock, shares         47,592      
Issuance of common stock in connection with license agreement 2,660         2,660    
Issuance of common stock in connection with license agreement, shares         177,318      
Accretion of redeemable convertible preferred stock to redemption value (10,784)         (7,237)   (3,547)
Temporary equity, Accretion of preferred stock to redemption value   $ 2,097 $ 3,853 $ 4,834        
Stock-based compensation 7,080         7,080    
Unrealized loss on investments (43)           $ (43)  
Temporary Equity, Conversion of redeemable convertible preferred stock into common stock upon initial public offering, shares   (33,200,000) (20,583,328) (20,204,079)        
Temporary Equity, Conversion of redeemable convertible preferred stock into common stock upon initial public offering   $ (46,266) $ (84,961) $ (94,341)        
Conversion of redeemable convertible preferred stock into common stock upon initial public offering 225,568       $ 1 225,567    
Conversion of redeemable convertible preferred stock into common stock upon initial public offering, shares         10,065,629      
Issuance of common stock upon initial public offering/public offering, net of issuance costs 74,352       $ 1 74,351    
Issuance of common stock upon initial public offering/public offering, net of issuance costs, shares         5,500,000      
Net loss (91,665)             (91,665)
Ending balance at Dec. 31, 2020 $ 14,567       $ 2 302,655   (288,090)
Temporary equity, Ending balance, shares at Dec. 31, 2020 0              
Ending balance, shares at Dec. 31, 2020         18,787,579      
Exercise of options to purchase common stock $ 3,737         3,737    
Exercise of options to purchase common stock, shares 433,751       433,751      
Stock-based compensation $ 10,677         10,677    
Issuance of common stock upon initial public offering/public offering, net of issuance costs 61,681         61,681    
Issuance of common stock upon initial public offering/public offering, net of issuance costs, shares         3,162,500      
Net loss (37,157)             (37,157)
Ending balance at Dec. 31, 2021 $ 53,505       $ 2 $ 378,750   $ (325,247)
Temporary equity, Ending balance, shares at Dec. 31, 2021 0              
Ending balance, shares at Dec. 31, 2021         22,383,830