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Warrants (Tables)
9 Months Ended
Sep. 30, 2022
Warrants.  
Summary of Company's warrant activity

    

    

Weighted

    

Weighted Average

Number of

Average

Remaining

Warrants

Exercise Price

Contractual Life

Outstanding as of December 31, 2021

1,220,194

$

15.36

4.24

Warrants issued in connection with the registered direct offering

Warrants exercised

Warrants expired

Outstanding as of March 31, 2022

1,220,194

$

15.36

4.24

Warrants issued in connection with the registered direct offering

Warrants exercised

Warrants expired

(155,057)

Outstanding as of June 30, 2022

1,065,137

$

15.94

4.30

Warrants issued in connection with the registered direct offering

Warrants exercised

Warrants expired

Outstanding as of September 30, 2022

 

1,065,137

$

15.94

 

4.05

Schedule of stockholders equity note warrants or rights classified as equity and liability

    

    

    

    

Weighted

    

Weighted Average

Number of

Average

Remaining

Date

Exercise Price

Type

Warrants

Exercise Price

Contractual Life

December 2021 registered direct offering

$

16.50

Investor

1,000,000

4.21

August 2018 public offering

$

6.00

Investor

10,227

0.87

June 2019 public offering

$

7.50

Placement agent

54,910

1.72

Outstanding as of September 30, 2022

 

1,065,137

$

15.94

 

4.05