Quarterly report pursuant to Section 13 or 15(d)

Stockholders Equity (Tables)

v3.23.1
Stockholders Equity (Tables)
3 Months Ended
Mar. 31, 2023
Stockholders' Equity Note [Abstract]  
Schedule of outstanding warrants to purchase common stock issued to stockholders
Warrant    Issuance Date   Expiration Date   Exercise Price Per Share     Number of Shares of Common Stock Underlying Warrants  
Private Placement Warrants   IPO (December 13, 2018)   December 13, 2023     11.50       2,900,000  
Public Warrants   IPO (December 13, 2018)   October 28, 2024     11.50       3,500,000  
2021 Registered Direct Offering Warrants   SPA (July 28, 2021)   January 28, 2027     5.00       2,812,501  
Pre-Funded Warrants   February 27, 2023          0.001       2,776,428  
                      11,988,929  

 

Schedule of black-scholes option-pricing model
    Three Months Ended
March 31,
 
    2023     2022  
Underlying value of Common Stock ($)     0.40       1.41  
Exercise price ($)     0.40       1.41  
Expected volatility (%)     94.3       85.3  
Expected terms of the option (years)     6.11       6.11  
Risk-free interest rate (%)     4.21       2.50  

 

Schedule of summary of options granted to purchase
    For the Three Months Ended
March 31, 2023
 
    Number of
Options
    Weighted
Average
Exercise Price
    Aggregate
Intrinsic
Value
 
Outstanding at the beginning of period     4,769,441     $ 2.93     $ 40  
Granted     1,543,000     $ 0.40          
Forfeited     (197,841 )   $ 3.16          
Exercised    
-
    $
-
         
Outstanding at the end of period     6,114,600     $ 2.28     $ 67  
Exercisable at the end of period     2,971,229     $ 3.08          
Weighted average remaining contractual life of outstanding options – years as of March 31, 2023     4.95                  

   

Schedule of outstanding compensation related warrants to purchase common stock
Warrant   Issuance
Date
  Expiration
Date
    Exercise
Price
Per Share
    Number of
Shares of
Common Stock
Underlying
Warrants
 
Private Warrants issued to scientific founders (see below)   November 27, 2017                     
     -
      2,974  

 

Schedule of share-based payment expenses
    Three Months Ended
March 31,
 
    2023     2022  
Research and development expenses, net     87       258  
General and administrative     88       357  
      175       615