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Condensed Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity (Deficit) - USD ($)
$ in Thousands
Total
Redeemable Convertible Preferred Stock
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Loss
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2020   16,614,178        
Beginning balance at Dec. 31, 2020   $ 141,422        
Ending balance (in shares) at Mar. 31, 2021   16,614,178        
Ending balance at Mar. 31, 2021   $ 141,422        
Beginning balance (in shares) at Dec. 31, 2020     314,096      
Beginning balance at Dec. 31, 2020 $ (147,832)   $ 0 $ 239,826 $ 33 $ (387,691)
Increase (Decrease) in Stockholders' Equity            
Net loss (8,810)         (8,810)
Issuance of common stock pursuant to stock option exercises (in shares)     156,538      
Issuance of common stock pursuant to stock option exercises 4     4    
Stock-based compensation 202     202    
Ending balance (in shares) at Mar. 31, 2021     470,634      
Ending balance at Mar. 31, 2021 (156,436)   $ 0 240,032 33 (396,501)
Beginning balance (in shares) at Dec. 31, 2020   16,614,178        
Beginning balance at Dec. 31, 2020   $ 141,422        
Ending balance (in shares) at Sep. 30, 2021   0        
Ending balance at Sep. 30, 2021   $ 0        
Beginning balance (in shares) at Dec. 31, 2020     314,096      
Beginning balance at Dec. 31, 2020 (147,832)   $ 0 239,826 33 (387,691)
Increase (Decrease) in Stockholders' Equity            
Net loss (25,387)          
Ending balance (in shares) at Sep. 30, 2021     24,307,898      
Ending balance at Sep. 30, 2021 81,712   $ 24 494,733 33 (413,078)
Beginning balance (in shares) at Dec. 31, 2020   16,614,178        
Beginning balance at Dec. 31, 2020   $ 141,422        
Ending balance (in shares) at Dec. 31, 2021   0        
Beginning balance (in shares) at Dec. 31, 2020     314,096      
Beginning balance at Dec. 31, 2020 $ (147,832)   $ 0 239,826 33 (387,691)
Ending balance (in shares) at Dec. 31, 2021 24,452,999   24,452,999      
Ending balance at Dec. 31, 2021 $ 73,503   $ 24 497,522 (272) (423,771)
Beginning balance (in shares) at Mar. 31, 2021   16,614,178        
Beginning balance at Mar. 31, 2021   $ 141,422        
Ending balance (in shares) at Jun. 30, 2021   0        
Ending balance at Jun. 30, 2021   $ 0        
Beginning balance (in shares) at Mar. 31, 2021     470,634      
Beginning balance at Mar. 31, 2021 (156,436)   $ 0 240,032 33 (396,501)
Increase (Decrease) in Stockholders' Equity            
Net loss (8,494)         (8,494)
Unrealized gain (loss) on available-for-sale debt securities (22)       (22)  
Net exercise of Series B’ redeemable convertible preferred stock warrants (in shares)   213,941        
Net exercise of Series B’ redeemable convertible preferred stock warrants 0 $ 5,606        
Conversion of redeemable convertible preferred stock into common stock (in shares)   (16,828,119) (16,828,119)      
Conversion of redeemable convertible preferred stock into common stock (147,028) $ (147,028) $ (17) (147,011)    
Net exercise of common stock warrants (in shares)     185      
Net exercise of common stock warrants 0          
Issuance of common stock upon initial public offering, net of issuance costs and underwriting discount (in shares)     6,900,000      
Issuance of common stock upon initial public offering, net of issuance costs and underwriting discount of $11,813 105,487   $ 7 105,480    
Issuance of common stock pursuant to stock option exercises (in shares)     95,770      
Issuance of common stock pursuant to stock option exercises 4     4    
Change in early exercise liability (4)     (4)    
Stock-based compensation 1,103     1,103    
Ending balance (in shares) at Jun. 30, 2021     24,294,708      
Ending balance at Jun. 30, 2021 88,666   $ 24 493,626 11 (404,995)
Ending balance (in shares) at Sep. 30, 2021   0        
Ending balance at Sep. 30, 2021   $ 0        
Increase (Decrease) in Stockholders' Equity            
Net loss (8,083)         (8,083)
Unrealized gain (loss) on available-for-sale debt securities 22       22  
Issuance of common stock pursuant to stock option exercises (in shares)     13,190      
Stock-based compensation 1,107     1,107    
Ending balance (in shares) at Sep. 30, 2021     24,307,898      
Ending balance at Sep. 30, 2021 $ 81,712   $ 24 494,733 33 (413,078)
Beginning balance (in shares) at Dec. 31, 2021   0        
Beginning balance (in shares) at Dec. 31, 2021 24,452,999   24,452,999      
Beginning balance at Dec. 31, 2021 $ 73,503   $ 24 497,522 (272) (423,771)
Increase (Decrease) in Stockholders' Equity            
Net loss (11,461)         (11,461)
Unrealized gain (loss) on available-for-sale debt securities (710)       (710)  
Issuance of common stock pursuant to stock option exercises (in shares)     38,635      
Issuance of common stock pursuant to stock option exercises 1     1    
Repurchase of common stock (in shares)     (14,454)      
Change in early exercise liability 2     2    
Stock-based compensation 1,488     1,488    
Ending balance (in shares) at Mar. 31, 2022     24,477,180      
Ending balance at Mar. 31, 2022 $ 62,823   $ 24 499,013 (982) (435,232)
Beginning balance (in shares) at Dec. 31, 2021   0        
Ending balance (in shares) at Sep. 30, 2022   0        
Beginning balance (in shares) at Dec. 31, 2021 24,452,999   24,452,999      
Beginning balance at Dec. 31, 2021 $ 73,503   $ 24 497,522 (272) (423,771)
Increase (Decrease) in Stockholders' Equity            
Net loss $ (35,936)          
Issuance of common stock pursuant to stock option exercises (in shares) 129,200          
Ending balance (in shares) at Sep. 30, 2022 24,864,119   24,864,119      
Ending balance at Sep. 30, 2022 $ 43,409   $ 25 504,425 (1,334) (459,707)
Beginning balance (in shares) at Mar. 31, 2022     24,477,180      
Beginning balance at Mar. 31, 2022 62,823   $ 24 499,013 (982) (435,232)
Increase (Decrease) in Stockholders' Equity            
Net loss (12,690)         (12,690)
Unrealized gain (loss) on available-for-sale debt securities (469)       (469)  
Issuance of common stock pursuant to stock option exercises (in shares)     74,435      
Issuance of common stock pursuant to stock option exercises 2     2    
Issuance of shares pursuant to Employee Stock Purchase Plan (in shares)     147,217      
Issuance of common stock pursuant to Employee Stock Purchase Plan 679   $ 1 678    
Issuance of common stock upon vesting of restricted stock units (in shares)     121,656      
Shares withheld for taxes (in shares)     (5,633)      
Shares withheld for taxes (47)     (47)    
Change in early exercise liability 1     1    
Stock-based compensation 2,603     2,603    
Ending balance (in shares) at Jun. 30, 2022     24,814,855      
Ending balance at Jun. 30, 2022 52,902   $ 25 502,250 (1,451) (447,922)
Ending balance (in shares) at Sep. 30, 2022   0        
Increase (Decrease) in Stockholders' Equity            
Net loss (11,785)         (11,785)
Unrealized gain (loss) on available-for-sale debt securities 117       117  
Issuance of common stock pursuant to stock option exercises (in shares)     16,130      
Issuance of common stock pursuant to stock option exercises 0     0    
Issuance of common stock upon vesting of restricted stock units (in shares)     34,540      
Issuance of common stock upon vesting of restricted stock units 0          
Shares withheld for taxes (in shares)     (1,406)      
Shares withheld for taxes (7)     (7)    
Stock-based compensation $ 2,182     2,182    
Ending balance (in shares) at Sep. 30, 2022 24,864,119   24,864,119      
Ending balance at Sep. 30, 2022 $ 43,409   $ 25 $ 504,425 $ (1,334) $ (459,707)