Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation

v3.5.0.2
Stock-based Compensation
9 Months Ended
Sep. 30, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Stock-based Compensation

11. Stock-based Compensation

In February 2016, the Company’s Board of Directors approved an amendment to the 2010 Long Term Incentive and Stock Award Plan (“2010 Plan”) to, among other things, allow for an increase in the number of shares of common stock reserved for issuance and recommended that the amendment be submitted to the Company’s shareholders for approval at the 2016 annual meeting. At the May 2016 annual meeting, the shareholders approved an amendment to the 2010 Plan to, among other things, increase the aggregate number of shares authorized for issuance by 170,000 shares to an aggregate of 1,108,560 shares.

The Company grants qualified and non-qualified stock options, RSUs, common stock and other stock-based awards under various plans to directors, officers, employees and other individuals. Stock options are granted at exercise prices of not less than the fair market value of the Company’s common stock on the date of grant. Additionally, the Company has an Employee Stock Purchase Plan (“ESPP”) that allows employees to purchase Company shares at a purchase price equal to 85% of the lower of the fair market value of the Company’s common stock on the first trading day of the offering period or on the last day of the offering period.

Stock Options

The stock options generally vest monthly over four years for employees and one year for directors. Stock options held by employees who qualify for retirement age (defined as employees that are a minimum of 55 years of age and the sum of their age plus years of full-time employment with the Company exceeds 70 years) vest on the earlier of scheduled vest date or the date of retirement.  The fair value of the stock options granted during the three and nine months ended September 30, 2016 and 2015, was estimated based on the following weighted average assumptions:

 

 

 

Three  Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2016

 

 

2015

 

 

2016

 

 

2015

 

Dividend yield

 

 

0

%

 

 

0

%

 

 

0

%

 

 

0

%

Expected volatility

 

 

102

%

 

 

103

%

 

 

103

%

 

 

83

%

Risk-free interest rate

 

 

1.13

%

 

 

1.36

%

 

 

1.14

%

 

 

1.40

%

Expected term

 

5.6 years

 

 

5.6 years

 

 

5.6 years

 

 

5.6 years

 

 

Stock option activity for the nine months ended September 30, 2016, was as follows:

 

 

 

Options

 

 

Weighted

Average Exercise Price Per Share

 

 

Weighted

Average

Remaining

Contractual

Life

(in years)

 

 

Aggregate

Intrinsic Value

(in thousands)

 

Outstanding at January 1, 2016

 

 

384,382

 

 

$

126.46

 

 

 

 

 

 

 

 

 

Granted

 

 

25,672

 

 

 

12.58

 

 

 

 

 

 

 

 

 

Forfeited, expired or cancelled

 

 

(41,494

)

 

 

121.39

 

 

 

 

 

 

 

 

 

Outstanding at September 30, 2016

 

 

368,560

 

 

$

119.10

 

 

 

6.23

 

 

$

 

Vested and expected to vest at September 30, 2016

 

 

362,745

 

 

$

119.86

 

 

 

6.19

 

 

$

 

Exercisable at September 30, 2016

 

 

293,367

 

 

$

130.02

 

 

 

5.64

 

 

$

 

Restricted Stock Units

RSUs generally vest annually over three years for employees and one year for directors.  In February 2016, the Company granted 114,517 RSUs to employees that will vest one year from the date of grant. RSUs held by employees who qualify for retirement age (defined as employees that are a minimum of 55 years of  age and the sum of their age plus years of full-time employment with the Company exceeds 70 years) vest on the earlier of scheduled vest date or the date of retirement.

 

The valuation of RSUs is determined at the date of grant using the closing stock price.

Unvested RSU activity for the nine months ended September 30, 2016, is summarized below:

 

 

 

 

 

 

Weighted-

 

 

 

Number of

 

 

Average Grant-

 

 

 

Shares

 

 

Date Fair Value

 

Unvested balance at January 1, 2016

 

 

106,205

 

 

$

81.42

 

Granted

 

 

126,067

 

 

 

14.90

 

Vested

 

 

(57,473

)

 

 

65.35

 

Forfeited

 

 

(19,044

)

 

 

52.39

 

Unvested balance at September 30, 2016

 

 

155,755

 

 

$

37.06

 

Stock-based Compensation Expense

 

The following table shows total stock-based compensation expense for stock options, RSUs and ESPP in the condensed consolidated statements of comprehensive loss (in thousands):

 

 

 

Three  Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2016

 

 

2015

 

 

2016

 

 

2015

 

Research and development

 

$

802

 

 

$

1,047

 

 

$

2,796

 

 

$

4,642

 

Selling, general and administrative

 

 

927

 

 

 

917

 

 

 

3,404

 

 

 

3,676

 

Total stock-based compensation expense

 

$

1,729

 

 

$

1,964

 

 

$

6,200

 

 

$

8,318