Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

v3.21.2
Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2021
Stockholders' Equity  
Schedule of common stock warrants outstanding

    

Common Stock 

Warrants

Outstanding, December 31, 2020

 

758,939

Issued

 

31,000

Expired

 

(42,556)

Outstanding, September 30, 2021

 

747,383

Schedule of stock option valuation assumptions

The following table summarizes weighted-average assumptions used in our calculations of fair value for the nine months ended September 30, 2021 and 2020:

    

2021

2020

Dividend yield

 

%  

%

Expected volatility

 

102.15

%  

96.26

%

Risk-free interest rate

 

0.67

%  

0.52

%

Expected lives (years)

 

5.6

years

5.4

years

Schedule of stock option activity

    

    

Weighted

 

 

Weighted

Average

 

Aggregate

 

Average

Exercise

 

Intrinsic

 

Remaining

Shares

Price

 

Value

 

Contractual Life

Stock options outstanding at December 31, 2020

1,480,139

$

11.05

$

628,169

Granted

 

604,094

 

5.69

 

Exercised

 

(69,493)

 

6.57

$

32,274

Forfeited/Expired

 

(124,566)

 

8.93

 

Stock options outstanding at September 30, 2021

 

1,890,174

$

9.64

$

817,628

8.7

Years

Stock options exercisable at September 30, 2021

1,089,062

$

12.59

$

266,618

8.4

Years

Schedule of restricted stock activity

Weighted

Average

Shares

Fair Value

Restricted stock at December 31, 2020

239,928

$

4.02

Granted

432,185

5.68

Vested

(412,239)

5.16

Cancelled

Restricted stock at September 30, 2021

259,874

$

4.96

Schedule of RSU activity

Weighted

Average

Shares

Fair Value

RSUs at December 31, 2020

1,900

$

26.60

Vested

 

(1,900)

 

26.60

Cancelled

 

 

RSUs at September 30, 2021

 

$