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  
Schedule of share-based compensation expense recognized

The estimated grant-date fair value of the Company’s stock-based awards is amortized on a straight-line basis over the awards’ service periods. Stock-based compensation expense recognized was as follows (in thousands):

Three Months Ended June 30, 

Six Months Ended June 30, 

    

2020

    

2019

    

2020

    

2019

    

Research and development

$

204

$

192

$

413

$

424

General and administrative

 

563

 

601

 

1,245

 

1,123

Total stock-based compensation

$

767

$

793

$

1,658

$

1,547

Summary of stock option activity

Options Outstanding

    

    

    

Weighted 

Average 

Weighted 

Remaining 

Average 

Contractual 

Number of 

Exercise 

Term 

Shares

Price

(in years)

Balance, December 31, 2019

 

7,568,304

$

3.40

 

7.01

Granted

 

742,824

 

0.97

Exercised

 

 

Forfeited/Cancelled

 

(264,750)

 

(3.39)

Balance, June 30, 2020

 

8,046,378

$

3.18

 

6.94

Vested or expected to vest at June 30, 2020

 

8,046,378

$

3.18

 

6.94

Exercisable at June 30, 2020

 

5,176,228

$

4.04

 

6.06

Schedule of weighted-average assumptions:

June 30, 

    

2020

    

2019

    

    

Expected term of options (in years)

 

5.7

 

5.9

 

 

Risk-free interest rate

 

0.7

%  

2.0

%  

 

Expected volatility

 

96.1

%  

69.1

%  

 

Dividend yield

 

%  

%  

 

Schedule of changes in the status of non-vested RSU

    

    

Weighted 

Average 

Number of 

Grant Date

Awards

Fair Value

Non-vested at December 31, 2019

 

2,945,585

$

0.73

Granted

 

250,000

 

0.79

Vested

 

(68,750)

 

0.96

Forfeited

 

(118,400)

 

0.70

Non-vested at June 30, 2020

 

3,008,435

$

0.73

Schedule of shares available to be granted under equity incentive plans

At June 30, 2020, the Company has the following shares available to be granted under its equity incentive plans:

    

    

Inducement 

2013 Plan

Plan

Available at December 31, 2019

 

4,560,708

 

205,000

Authorized

 

3,768,550

 

Granted

 

(992,824)

 

Shares withheld for taxes not issued

23,539

Forfeited/Cancelled

 

335,650

 

47,500

Available at June 30, 2020

 

7,695,623

 

252,500

Schedule of shares of common stock reserved/available

At June 30, 2020, the Company has reserved the following shares of common stock for issuance:

Stock options outstanding under 2013 Plan

    

7,798,878

Restricted stock units outstanding under 2013 Plan

3,008,435

Shares reserved for future issuance under 2013 Plan

 

7,695,623

Stock options outstanding under Inducement Plan

 

247,500

Shares reserved for future issuance under Inducement Plan

 

252,500

Shares reserved for future issuance under 2013 Employee Stock Purchase Plan

 

225,806

Warrants outstanding

 

623,091

Total shares of common stock reserved for future issuance

 

19,851,833