Annual report pursuant to Section 13 and 15(d)

2008 and 2013 Equity Incentive Plans (Tables)

v2.4.1.9
2008 and 2013 Equity Incentive Plans (Tables)
12 Months Ended
Dec. 31, 2014
2008 and 2013 Equity Incentive Plans  
Schedule of share-based compensation expense recognized

 

                                                                                                                                                                                    

 

 

Year Ended
December 31,

 

 

 

2014

 

2013

 

Research and development

 

$

1,129,244 

 

$

609,483 

 

General and administrative

 

 

1,254,155 

 

 

318,513 

 

​  

​  

​  

​  

Total stock-based compensation

 

$

2,383,399 

 

$

927,996 

 

​  

​  

​  

​  

​  

​  

​  

​  

​  

 

Schedule of options outstanding

 

                                                                                                                                                                                    

 

 

 

 

Options Outstanding

 

 

 

Shares
Available
for Grant

 

Number
of Shares

 

Weighted-
Average
Exercise
Price

 

Weighted
Average
Remaining
Contractual
Term (in years)

 

Balance, December 31, 2012

 

 

171,803

 

 

1,523,156

 

$

0.56

 

 

7.89

 

Authorized

 

 

1,459,514

 

 

 

 

 

 

 

 

 

Granted

 

 

(1,730,156

)

 

1,730,156

 

 

3.73

 

 

 

 

Exercised

 

 

 

 

(275,262

)

 

0.30

 

 

 

 

Forfeitures

 

 

182,304

 

 

(182,304

)

 

0.95

 

 

 

 

​  

​  

​  

​  

Balance, December 31, 2013

 

 

83,465

 

 

2,795,746

 

$

2.52

 

 

8.45

 

Authorized

 

 

1,711,290

 

 

 

 

 

 

 

 

 

Granted

 

 

(1,095,042

)

 

1,095,042

 

 

6.75

 

 

 

 

Exercised

 

 

 

 

(186,687

)

 

0.60

 

 

 

 

Forfeitures

 

 

129,651

 

 

(129,651

)

 

7.20

 

 

 

 

​  

​  

​  

​  

Balance, December 31, 2014

 

 

829,364

 

 

3,574,450

 

$

3.75

 

 

8.06

 

​  

​  

​  

​  

​  

​  

​  

​  

​  

Vested or expected to vest at December 31, 2014

 

 

 

 

 

3,528,809

 

$

3.71

 

 

8.05

 

​  

​  

​  

​  

​  

Exercisable at December 31, 2014

 

 

 

 

 

1,602,623

 

$

2.26

 

 

7.10

 

​  

​  

​  

​  

​  

 

Schedule of weighted-average assumptions:

 

                                                                                                                                                                                    

 

 

Year Ended
December 31,
2014

 

Year Ended
December 31,
2013

 

Risk-free interest rate

 

 

1.80 

%

 

1.52 

%

Expected term of options (in years)

 

 

5.8 

 

 

6.1 

 

Expected volatility

 

 

75.9 

%

 

80.5 

%

Dividend yield

 

 

%

 

%

 

Schedule of shares of common stock reserved for issuance

 

                                                                                                                                                                                    

Common stock options outstanding

 

 

3,574,450 

 

Common stock options and restricted stock available for future grant (2013 Plan)

 

 

829,364 

 

Common stock warrants outstanding

 

 

30,258 

 

​  

​  

 

 

 

4,434,072 

 

​  

​  

​  

​  

​