Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Tables)

v2.4.1.9
Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 28, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Stock-Based Compensation Activity - Stock Options
A summary of stock-based compensation activity and changes related to stock options for the year ended December 28, 2014 are as follows:
 
Shares
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Term
(Years)
 
Aggregate
Intrinsic
Value
Outstanding and expected to vest as of December 29, 2013
729,874

 
$
11.45

 
 
 
 
Granted
13,277

 
32.09

 
 
 
 
Exercised
(55,223
)
 
5.82

 
 
 
 
Forfeited
(3,740
)
 
18.36

 
 
 
 
Outstanding and expected to vest as of December 28, 2014
684,188

 
$
12.27

 
4.85
 
$
6,531

Exercisable as of December 28, 2014
477,396

 
$
7.50

 
3.66
 
$
6,014

Weighted Average Assumptions
The weighted-average grant date fair value of options granted was $11.12, $11.05 and $6.07 per share, during the years ended December 28, 2014, December 29, 2013 and December 30, 2012, respectively, as estimated at the date of grant using the Black-Scholes pricing model with the following weighted-average assumptions: 
 
2014
 
2013
 
2012
Dividend yield
—
%
 
—
%
 
—
%
Expected volatility
37
%
 
43
%
 
44
%
Risk-free rate of return
1.58
%
 
0.80
%
 
0.68
%
Expected life (in years)
5

 
5

 
5

Summary of Stock-Based Compensation Activity - Restricted Stock Units
A summary of stock-based compensation activity and changes related to restricted stock units for the year ended December 28, 2014 are as follows:
 
Shares
 
Weighted
Average
Fair Value
Outstanding and expected to vest as of December 29, 2013
—

 
$
—

Granted
87,428

 
40.36

Outstanding and expected to vest as of December 28, 2014
87,428

 
$
40.36