Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

v3.21.1
Stockholders' Equity (Tables)
3 Months Ended
Mar. 31, 2021
Stockholders' Equity  
Summary of restricted stock award activity

Weighted Average

Number of

Grant Date Fair

    

Shares

    

Value  

Non-vested at December 31, 2020

3,869,896

$

3.61

Granted

800,000

2.66

Vested

(429,249)

3.90

Non-vested at March 31, 2021

4,240,647

$

3.40

Summary of stock option award activity

The following table summarizes stock option award activity for the three months ended March 31, 2021:

Weighted Average 

Remaining

Weighted Average 

 Contractual Life

    

Stock Options 

    

Exercise Price

    

(in years)

Outstanding as of December 31, 2020

220,000

$

3.20

8.04

Granted

30,000

2.63

Outstanding as of March 31, 2021

250,000

$

3.13

8.03

Vested and exercisable as of March 31, 2021

50,000

$

2.56

8.19

Summary of stock options granted

For the three months Ended March 31,

 

    

2021

    

2020

 

Risk-free interest rate

 

1.04

%

1.02

%

Expected dividend yield

 

Expected term in years

 

10.0

10.0

Expected volatility

 

102.71

%

101.27

%

Summary of warrant activities

A summary of warrant activities for the three months ended March 31, 2021 is presented below:

Weighted Average 

Remaining

Weighted Average 

Contractual Life

    

Warrants 

    

Exercise Price 

    

(in years)

Outstanding as of December 31, 2020

57,515

$

5.39

1.22

Expired

(44,324)

7.00

Outstanding as of March 31, 2021

13,191

$

0.00

4.58

Summary of stock-based compensation expense

The following table summarizes stock-based compensation expense for the three months ended March 31, 2021 and 2020 ($ in thousands):

For the three months ended March 31, 

    

2021

    

2020

Research and development

$

161

$

144

General and administrative

 

613

 

495

Total stock-based compensation expense

$

774

$

639