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Stock Options (Tables)
3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2022
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

    

Option

    

Option

    

Weighted-Average

Number of

Exercise

Exercise

    

Shares

    

Price Per Share

    

Price Per Share

Options outstanding at January 1, 2021

 

2,709,964

$0.30 - $2.00

 

$

1.48

Granted

 

335,300

$3.13 - $3.76

 

$

3.17

Exercised

 

 

 

Canceled

 

(286,000)

$0.30 - $3.13

 

$

1.70

Options outstanding at December 31, 2021

 

2,759,264

$0.30 - $3.76

 

$

1.66

Granted

2,149,152

$1.67 - $5.00

$

2.19

Exercised

Canceled

(56,750)

$0.30 - $2.00

$

0.49

Options outstanding at December 31, 2022

4,851,666

$0.30 - $5.00

$

1.91

Options exercisable at December 31, 2022

 

1,592,088

$0.30 - $3.76

 

$

1.49