Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

v3.19.2
Stockholders' Equity (Tables)
6 Months Ended
Jun. 30, 2019
Stockholders' Equity  
Summary of restricted stock award activity

The following table summarizes restricted stock award activity for the six months ended June 30, 2019:

 

 

 

 

 

 

 

 

 

 

Weighted Average 

 

 

 

 

Grant Date Fair

 

    

Number of Units

    

Value  

Nonvested at December 31, 2018

 

2,932,106

 

$

4.22

Granted

 

781,652

 

 

3.35

Forfeited

 

(21,000)

 

 

3.16

Vested

 

(180,626)

 

 

1.06

Nonvested at June 30, 2019

 

3,512,132

 

$

4.34

 

Summary of stock option award activity

The following table summarizes stock option award activity for the six months ended June 30, 2019:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Weighted Average 

 

 

 

 

 

 

 

Remaining

 

 

 

 

Weighted Average 

 

 Contractual Life

 

    

Stock Options 

    

Exercise Price

    

(in years)

Outstanding as of December 31, 2018

 

60,000

 

$

5.43

 

8.09

Granted

 

50,000

 

 

3.25

 

9.57

Outstanding as of June 30, 2019

 

110,000

 

$

4.44

 

8.49

 

 

Summary of warrant activities

A summary of warrant activities for the six months ended June 30, 2019 is presented below:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Weighted Average 

 

 

 

 

 

 

 

Remaining

 

 

 

 

Weighted Average 

 

Contractual Life

 

    

Warrants 

    

Exercise Price 

    

(in years)

Outstanding as of December 31, 2018

 

4,280,972

 

$

6.69

 

2.33

Exercised

 

(47,379)

 

 

 —

 

 —

Outstanding as of June 30, 2019

 

4,233,593

 

$

6.77

 

1.78

 

 

Summary of stock-based compensation expense

The following table summarizes stock-based compensation expense for the three and six months ended June 30, 2019 and 2018 ($ in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For the three months ended June 30, 

 

For the six months ended June 30, 

 

    

2019

    

2018

    

2019

    

2018

Research and development

 

$

184

 

$

(392)

 

$

380

 

$

288

General and administrative

 

 

629

 

 

464

 

 

1,231

 

 

921

Total stock-based compensation expense

 

$

813

 

$

72

 

$

1,611

 

$

1,209