v3.8.0.1
Stockholders’ Equity (Tables)
 3 Months Ended
Mar. 31, 2018
Equity [Abstract]  
Summary of Stock-based Compensation in Accompanying Consolidated Statements of Operations
The following table summarizes stock-based compensation in our accompanying condensed consolidated statements of operations (in thousands):
 
Three Months Ended
 
March 31, 2018
 
April 1, 2017
 
 
 
 
Cost of revenue
$
64

 
$
92

Selling and marketing
474

 
246

Research and development
809

 
281

General and administrative
2,365

 
984

   Total stock-based compensation
$
3,712

 
$
1,603
Assumptions Used to Estimate Fair Value of Options Granted
The following table presents the assumptions used to estimate the fair value of options granted during the periods presented:
 
Three Months Ended
 
March 31,
2018
 
April 1,
2017
Risk-free interest rate
2.30% - 2.72%
 
2.02 - 2.18 %
Expected term (years)
6.25
 
6.25
Volatility
30.1% - 30.2%
 
33.3% - 33.7%
Expected dividend yield
—
 
—
Summary of Stock Option and RSU Activity
A summary of stock option, RSU, PSU, and MSU activity for the three months ended March 31, 2018 was as follows (in thousands for shares and intrinsic value):
 
 
 
 
 
 
 
 
 
Restricted Stock Units
 
Shares
 
Weighted-Average Remaining Contractual Term (Years)
 
Weighted-Average Exercise Price
 
Aggregate Intrinsic Value
 
Shares
 
Weighted-Average Grant Date Fair Value
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding as of December 30, 2017
4,486

 
6.68
 
$
8.65

 
$
42,892

 
1,850

 
$
10.58

Granted(1)
107

 
 
 
$
17.45

 
 
 
1,217

 
$
17.39

Settled (RSUs and PSUs)
—

 
 
 
—

 
 
 
(213
)
 
$
9.51

Exercised
(228
)
 
 
 
$
5.49

 
 
 
—

 
—

Canceled and forfeited
(86
)
 
 
 
$
10.08

 
 
 
(252
)
 
$
11.42

Outstanding as of March 31, 2018
4,279

 
6.44
 
$
9.01

 
$
32,661

 
2,602

 
$
13.77

Vested and exercisable as of March 31, 2018
2,599

 
4.91
 
$
7.33

 
$
24,530

 
N/A
 
N/A
____________________________
(1) For RSUs, includes time-based, performance-based, and market-based restricted stock units
Schedule of Stock by Class
As of March 31, 2018, we had reserved the following shares of common stock for future issuance in connection with the following (in thousands):
 
March 31, 2018
Options issued and outstanding
4,279

Restricted stock units issued and outstanding
2,602

Common stock available for stock-based award grants under incentive award plans
2,576

Common stock available for conversion of Series A Redeemable Convertible Preferred Stock
4,851

Total
14,308