XML 34 R22.htm IDEA: XBRL DOCUMENT v3.22.2.2
Note 6 - Common Stock Warrants (Tables)
6 Months Ended
Jun. 30, 2022
Table Text Block [Abstract]  
Schedule of Stockholders' Equity Note, Warrants or Rights

The following table summarizes warrant activity for the six months ended June 30, 2022:

 

 

 

Number of
Warrants

 

 

Weighted
Average
Exercise Price

 

 

Weighted
Average
Remaining
Contractual
Life (Years)

 

Warrants outstanding, December 31, 2021

 

 

7,181,741

 

 

$

5.96

 

 

 

4.45

 

Granted

 

 

6,115,491

 

 

$

0.85

 

 

 

5.24

 

Exercised

 

 

(3,994,302

)

 

$

3.88

 

 

 

4.11

 

Forfeited, expired or cancelled

 

 

(89,922

)

 

$

80.72

 

 

 

 

Warrants outstanding, June 30, 2022

 

 

9,213,008

 

 

$

2.74

 

 

 

4.79