Annual report pursuant to Section 13 and 15(d)

Statement of Changes in Stockholder's Equity

v3.22.1
Statement of Changes in Stockholder's Equity - USD ($)
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Beginning balance at Dec. 31, 2019 $ 19,012,874 $ 333 $ 282,153,201 $ (263,140,660)
Beginning balance (in shares) at Dec. 31, 2019   33,203,806    
Stock-based compensation - restricted stock units ("RSUs") 7,656,857   7,656,857  
Stock-based compensation - employee stock purchase plan ("ESPP") 329,461   329,461  
Stock-based compensation - performance share units ("PSUs") (88,348)   (88,348)  
Issuance of shares for RSUs   $ 12 (12)  
Issuance of shares for RSUs (in shares)   1,194,439    
Shares purchased from contributions to the ESPP 417,546 $ 3 417,543  
Shares purchased from contributions to the ESPP (in shares)   275,312    
Issuance of shares in an at-the-market ("ATM") placement, net of issuance costs 53,556,202 $ 266 53,555,936  
Issuance of shares in an at-the-market ("ATM") placement, net of issuance costs (in shares)   26,618,855    
Net loss (31,832,086)     (31,832,086)
Ending balance at Dec. 31, 2020 49,052,506 $ 614 344,024,638 (294,972,746)
Ending balance (in shares) at Dec. 31, 2020   61,292,412    
Stock-based compensation - stock options 284,994   284,994  
Stock-based compensation - restricted stock units ("RSUs") 5,561,698   5,561,698  
Stock-based compensation - employee stock purchase plan ("ESPP") 252,568   252,568  
Stock-based compensation - performance share units ("PSUs") 5,831,928   5,831,928  
Issuance of shares for RSUs   $ 14 (14)  
Issuance of shares for RSUs (in shares)   1,431,532    
Issuance of shares for PSUs   $ 14 (14)  
Issuance of shares for PSUs (in shares)   1,420,938    
Shares purchased from contributions to the ESPP 384,126 $ 3 384,123  
Shares purchased from contributions to the ESPP (in shares)   292,890    
Issuance of shares in an at-the-market ("ATM") placement, net of issuance costs 27,043,751 $ 122 27,043,629  
Issuance of shares in an at-the-market ("ATM") placement, net of issuance costs (in shares)   12,229,433    
Net loss (41,427,293)     (41,427,293)
Ending balance at Dec. 31, 2021 $ 46,984,278 $ 767 $ 383,383,550 $ (336,400,039)
Ending balance (in shares) at Dec. 31, 2021   76,667,205