Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

v3.20.2
Stockholders' Equity (Tables)
6 Months Ended
Jun. 30, 2020
Stockholders' Equity  
Summary of restricted stock award activity The following table summarizes restricted stock award activity for the six months ended June 30, 2020:

Weighted Average 

Number of

Grant Date Fair

    

Shares

    

Value  

Non-vested at December 31, 2019

3,303,839

$

4.29

Granted

1,077,340

2.38

Vested

(291,981)

3.47

Non-vested at June 30, 2020

4,089,198

$

3.85

Summary of stock option award activity

The following table summarizes stock option award activity for the six months ended June 30, 2020:

Weighted Average 

Remaining

Weighted Average 

 Contractual Life

    

Stock Options 

    

Exercise Price

    

(in years)

Outstanding as of December 31, 2019

160,000

$

3.64

8.56

Granted

40,000

1.94

Outstanding as of June 30, 2020

200,000

$

3.30

8.38

Summary of warrant activities

A summary of warrant activities for the six months ended June 30, 2020 is presented below:

Weighted Average 

Remaining

Weighted Average 

Contractual Life

    

Warrants 

    

Exercise Price 

    

(in years)

Outstanding as of December 31, 2019

4,207,447

$

6.81

1.25

Exercised

(102,742)

0.13

Outstanding as of June 30, 2020

4,104,705

$

6.98

0.40

Summary of stock-based compensation expense

The following table summarizes stock-based compensation expense for the three and six  months ended June 30, 2020 and 2019 ($ in thousands):

For the three months ended June 30, 

For the six months ended June 30, 

    

2020

    

2019

    

2020

    

2019

Research and development

$

161

$

184

$

305

$

380

General and administrative

 

570

629

 

1,065

1,231

Total stock-based compensation expense

$

731

$

813

$

1,370

$

1,611