Quarterly report pursuant to Section 13 or 15(d)

Common Stock (Tables)

v2.4.0.8
Common Stock (Tables)
9 Months Ended
Sep. 30, 2014
Equity [Abstract]  
Schedule of Common Stock

Gross proceeds of $24.0 million and underwriting discounts and commissions and offering expenses of $1.6 million were allocated as follows:

 

     Common
Stock
     Series B
Pre-funded
Common
Stock
Warrants
     Series A
Common
Stock
Warrants
     Series B
Common
Stock
Warrants
 

Units Issued

     5,559,866         1,340,538         2,779,933         670,269   

Gross Proceeds (in thousands)

   $ 14,084       $ 3,387       $ 5,261       $ 1,268   

Underwriting discount and offering expense (in thousands)

   $ 885       $ 213       $ 428       $ 103   
Summary of Stock Options Activity

Stock option transactions and the number of stock options outstanding are summarized below:

 

    

Number

of
Optioned
Common
Shares

    Weighted
Average
Exercise
Price
 
     #     $  

Balance, December 31, 2013

     1,007,491        11.39   

Option grants

     356,097        9.47   

Option expired

     (12,169     18.93   

Option exercises

     (10,000     3.00   

Option forfeitures

     (55,557     11.71   
  

 

 

   

 

 

 

Balance, September 30, 2014

     1,285,862        10.77   
Summary of Fair Value of Option Awards

The fair value of each stock award for employees and directors is estimated on the grant date and for consultants at each reporting period, using the Black-Scholes option-pricing model based on the weighted-average assumptions noted in the following table:

 

     Nine months ended
September 30,
 
     2014     2013  

Risk-free interest rates

     1.83     1.15

Expected dividend yield

     0     0

Expected life

     5.9 years        5.8 years   

Expected volatility

     81.51     87.02
Summary of Share-Based Compensation Expense for Stock Options and Restricted Stock

The results for the periods set forth below included share-based compensation expense for stock options and restricted stock units in the following expense categories of the consolidated statements of loss (in thousands):

 

     Three Months
Ended
September 30,
     Nine Months
Ended
September 30,
 

(In thousands)

   2014      2013      2014      2013  
     $      $      $      $  

Research and development

     513         410         1,454         1,137   

General and administrative

     439         477         1,514         1,353   
  

 

 

    

 

 

    

 

 

    

 

 

 

Total share-based compensation

     952         887         2,968         2,490   
Summary of Restricted Stock Unit Award Activity

The following table summarizes our restricted stock unit award activity during the nine months ended September 30, 2014:

 

     Stock
Awards
    Weighted-
Average
Grant
Date Fair
Value
 
     #     $  

Outstanding January 1

     356,589        12.06   

Granted

     801,800        6.55   

Vested

     (199,849     7.00   

Forfeited or expired

     (275,732     11.22   
  

 

 

   

 

 

 

Outstanding September 30

     682,808        7.41   
Summary of Outstanding Warrants

The following is a summary of outstanding warrants to purchase common stock at September 30, 2014:

 

     Total
Outstanding
and
Exercisable
     Exercise
price per
Share
     Expiration Date

(1) Warrants issued in October 2010 financing

     1,587,301       $ 20.00       October 2015

(2) Series A Warrants issued in July 2014 financing

     2,779,933       $ 4.00       July 2019

(3) Series B Warrants issued in July 2014 financing

     670,269       $ 4.00       July 2019

(4) Pre-Funded Series B Warrants issued in July 2014 financing

     1,340,538       $ 0.01       July 2019
Summary of Fair Value of Warrants Issued

The estimated fair value of warrants issued and classified as liabilities is reassessed at each reporting date using the Black-Scholes option pricing model. The Pre-Funded Series B warrants are classified as equity and are not reassessed for their fair value at the end of each reporting date. The following assumptions were used to value the warrants that are classified as liabilities on the following reporting dates:

Warrants issued in October 2010 Financing

 

     Nine Months  Ended
September 30,
 
     2014     2013  

Risk-free interest rates

     0.15     0.36

Expected dividend yield

     0     0

Expected life

     1.06 years        2.06 years   

Expected volatility

     102.90     40.66

Series A and Series B Warrants issued in July 2014 Financing

 

     Nine Months Ended
September 30,
 
     2014     2013  

Risk-free interest rates

     1.68     —     

Expected dividend yield

     0     —     

Expected life

     4.75 years        —     

Expected volatility

     61.81     —