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Stock Options (Tables)
3 Months Ended
Mar. 31, 2023
Stock Options  
Summary of stock option activity

    

Option

    

Weighted-Average

    

Weighted-Average

Number of

Exercise

Remaining

    

Shares

    

Price Per Share

    

Contractual Term

Options outstanding as of January 1, 2023

 

4,851,666

$

1.91

 

8.4

Granted

 

58,000

 

1.81

 

  

Exercised

 

 

 

  

Canceled

 

 

 

  

Options outstanding as of March 31, 2023

 

4,909,666

$

1.91

 

8.2

Options exercisable as of March 31, 2023

 

1,906,098

$

1.68

 

7.1