Quarterly report pursuant to Section 13 or 15(d)

Stock Warrants

v3.22.1
Stock Warrants
3 Months Ended
Mar. 31, 2022
Text Block [Abstract]  
Stock Warrants
9. Stock Warrants
As of March 31, 2022 and December 31, 2021, the Company had warrants to purchase the underlying common stock outstanding as shown in the table below.
 
 
 
 
 
 
 
 
 
 
    
March 31,
2022
    
December 31,
2021
 
2020 Warrants
     8,819,904        8,819,904  
2017 Warrants
     1,599,645        1,599,645  
Pfizer Warrant
     505,617        505,617  
Other warrants (1)
     —          1,428  
    
 
 
    
 
 
 
Warrants to purchase common stock
     10,925,166        10,926,594  
    
 
 
    
 
 
 
Weighted-average exercise price per share
   $ 6.45      $ 6.47  
    
 
 
    
 
 
 
 
(1)
Other warrants are comprised of warrants issued prior to the Company’s initial public offering (“IPO”), generally in exchange for services rendered to the Company.
 
The following table summarizes information regarding the Company’s warrants outstanding at March 31, 2022:
 
 
 
 
 
 
 
 
Exercise Prices
  
Shares
Underlying
Outstanding
Warrants
    
Expiration Date
$4.90
     9,325,521      May 27, 2023
$15.50
     1,599,645      July 25, 2022
    
 
 
      
       10,925,166