Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

v3.19.3
Stockholders' Equity (Tables)
 9 Months Ended
Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of stock option activity

The following table summarizes stock option activities for the nine months ended September 30, 2019:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Weighted Average

 

 

 

 

Weighted

 

Remaining 

 

 

 

 

Average

 

Contractual Life

 

    

Stock Options

    

 Exercise Price

    

(in years)

Outstanding at December 31, 2018

 

1,241,675

 

$

5.73

 

8.31

Options granted

 

 —

 

 

 —

 

 —

Outstanding at September 30, 2019

 

1,241,675

 

 

5.73

 

7.56

Options vested and exercisable at September 30, 2019

 

349,219

 

$

5.73

 

7.56

 

Summary of stock-based compensation expense

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For the three months ended 

 

For the nine months ended 

 

 

September 30, 

 

September 30, 

 

    

2019

    

2018

    

2019

    

2018

General and administrative

 

$

389

  

$

201

 

$

1,058

  

$

1,137

Research and development

 

 

731

 

 

702

 

 

1,116

 

 

2,732

Total stock-based compensation expense

 

$

1,120

  

$

903

 

$

2,174

  

$

3,869

 

Schedule of warrant activity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Weighted Average

 

 

 

 

Weighted

 

Remaining

 

 

 

 

Average

 

Contractual Life

 

    

Warrants

    

Exercise Price

    

(in years)

Outstanding as of December 31, 2018

 

5,210,698

 

$

8.32

  

3.10

Granted

 

288,184

 

 

3.47

 

9.50

Exercised

 

(92,936)

 

 

 —

 

 —

Outstanding as of September 30, 2019

 

5,405,946

 

$

8.20

  

2.65

 

Unvested restricted stock awards  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedules of restricted stock and restricted stock unit activity

The following table summarizes restricted stock award activities for the nine months ended September 30, 2019:

 

 

 

 

 

 

 

 

 

 

 

Weighted Average

 

 

Number

 

Grant Date

 

    

of Shares

    

Fair Value

Nonvested at December 31, 2018

 

502,636

 

$

5.76

Granted

 

119,060

 

 

3.83

Forfeited

 

(50,000)

 

 

3.80

Nonvested at September 30, 2019

 

571,696

 

$

5.53

 

Unvested restricted stock units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedules of restricted stock and restricted stock unit activity

The following table summarizes restricted stock units activities for the nine months ended September 30, 2019:

 

 

 

 

 

 

 

 

 

 

 

 

 

Weighted Average

 

 

Number

 

Grant Date

 

    

of Units

    

Fair Value

Nonvested at December 31, 2018

 

  

1,032,084

  

$

7.77

Granted

 

  

309,000

  

 

2.99

Forfeited

 

  

(296,750)

  

 

7.98

Vested

 

  

(111,417)

  

 

9.43

Nonvested at September 30, 2019

 

  

932,917

  

$

5.92