Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Changes in Stockholders??? (Deficit) Equity (Unaudited)

v3.22.2.2
Condensed Consolidated Statements of Changes in Stockholders’ (Deficit) Equity (Unaudited) - USD ($)
$ in Thousands
Total
Underwritten Public Offering
ATM Agreement
Common stock
Common stock
Underwritten Public Offering
Common stock
ATM Agreement
Preferred Stock
Additional paid-in capital
Additional paid-in capital
Underwritten Public Offering
Additional paid-in capital
ATM Agreement
Accumulated deficit
Balance at the beginning (in shares) at Dec. 31, 2020       6,250,344 [1]     1,257,143        
Balance at the beginning at Dec. 31, 2020 $ 24,562     $ 6 [1]     $ 1 $ 202,345 [1]     $ (177,790)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Issuance of shares of common stock and pre-funded warrants in underwritten public offering, net (in shares) [1]       1,192,407 1,164,323 166,667          
Issuance of shares of common stock and pre-funded warrants in underwritten public offering, net 29,046 $ 37,653 $ 5,312 $ 1 [1] $ 1 [1]     29,045 $ 37,652 [1] $ 5,312  
Issuance of equity classified warrants related to venture loan and security agreement 861             861      
Exercise of stock options (in shares) [1]       48,385              
Exercise of stock options 1,568             1,568 [1]      
Conversion of preferred stock to common stock (in shares)       523,810 [1]     (1,257,143)        
Conversion of preferred stock to common stock 0     $ 1 [1]     $ (1)        
Shares purchased through employee stock purchase plan (in shares) [1]       7,391              
Shares purchased through employee stock purchase plan 207             207 [1]      
Restricted stock units vested during period (in shares) [1]       6,493              
Stock-based compensation 6,280             6,280 [1]      
Net income (loss) (65,180)                   (65,180)
Balance at the end (in shares) at Sep. 30, 2021       9,359,820 [1]     0        
Balance at the end at Sep. 30, 2021 40,309     $ 9 [1]     $ 0 283,270 [1]     (242,970)
Balance at the beginning (in shares) at Jun. 30, 2021 [1]       8,000,746              
Balance at the beginning at Jun. 30, 2021 21,588     $ 8 [1]       247,155 [1]     (225,575)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Issuance of shares of common stock and pre-funded warrants in underwritten public offering, net (in shares) [1]         1,192,407 166,667          
Issuance of shares of common stock and pre-funded warrants in underwritten public offering, net   $ 29,046 $ 5,312   $ 1 [1]       $ 29,045 $ 5,312  
Stock-based compensation 1,758             1,758 [1]      
Net income (loss) (17,395)                   (17,395)
Balance at the end (in shares) at Sep. 30, 2021       9,359,820 [1]     0        
Balance at the end at Sep. 30, 2021 40,309     $ 9 [1]     $ 0 283,270 [1]     (242,970)
Balance at the beginning (in shares) at Dec. 31, 2021 [1]       9,399,517              
Balance at the beginning at Dec. 31, 2021 23,082     $ 9 [1]       285,239 [1]     (262,166)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Impact of reverse stock split (in shares)       8,380              
Shares purchased through employee stock purchase plan (in shares) [1]       5,269              
Shares purchased through employee stock purchase plan 25             25 [1]      
Restricted stock units vested during period (in shares) [1]       938              
Stock-based compensation 6,711             6,711 [1]      
Net income (loss) (31,846)                   (31,846)
Balance at the end (in shares) at Sep. 30, 2022 [1]       9,414,104              
Balance at the end at Sep. 30, 2022 (2,028)     $ 9 [1]       291,975 [1]     (294,012)
Balance at the beginning (in shares) at Jun. 30, 2022 [1]       9,405,724              
Balance at the beginning at Jun. 30, 2022 (5,951)     $ 9 [1]       291,244 [1]     (297,204)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Impact of reverse stock split (in shares) [1]       8,380              
Stock-based compensation 731             731 [1]      
Net income (loss) 3,192                   3,192
Balance at the end (in shares) at Sep. 30, 2022 [1]       9,414,104              
Balance at the end at Sep. 30, 2022 $ (2,028)     $ 9 [1]       $ 291,975 [1]     $ (294,012)
[1] Amounts for prior periods presented have been retroactively adjusted to reflect the 1-for-12 reverse stock split effected on July 7, 2022.