v3.10.0.1
Stockholders’ Equity (Tables)
 6 Months Ended
Jun. 30, 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
 
Six Months Ended
 
June 30, 2018
 
July 1, 2017
 
June 30, 2018
 
July 1, 2017
 
 
 
 
 
 
 
 
Cost of revenue
$
68

 
$
105

 
$
132

 
$
197

Selling and marketing
722

 
295

 
1,196

 
541

Research and development
1,220

 
370

 
2,029

 
651

General and administrative
2,978

 
1,178

 
5,343

 
2,162

   Total stock-based compensation
$
4,988

 
$
1,948

 
$
8,700

 
$
3,551
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:
 
Six Months Ended
 
June 30,
2018
 
July 1,
2017
Risk-free interest rate
2.30% - 2.72%
 
1.86 - 2.18%
Expected term (years)
6.25
 
6.25
Volatility
42.1% - 42.1%
 
32.89% - 33.37%
Expected dividend yield
—
 
—
Summary of Stock Option and RSU Activity
A summary of stock option, RSU, PSU, and MSU activity for the six months ended June 30, 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)
108

 
 
 
$
17.44

 
 
 
1,284

 
$
17.56

Settled (RSUs and PSUs)
—

 
 
 
—

 
 
 
(363
)
 
$
9.60

Exercised
(478
)
 
 
 
$
6.71

 
 
 
—

 
—

Canceled and forfeited
(114
)
 
 
 
$
9.42

 
 
 
(257
)
 
$
11.39

Outstanding as of June 30, 2018
4,002

 
6.40
 
$
9.10

 
$
47,174

 
2,514

 
$
14.20

Vested and exercisable as of June 30, 2018
2,465

 
5.02
 
$
7.34

 
$
33,412

 
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 June 30, 2018, we had reserved the following shares of common stock for future issuance in connection with the following (in thousands):
 
June 30, 2018
Options issued and outstanding
4,002

Restricted stock units issued and outstanding
2,514

Common stock available for stock-based award grants under incentive award plans
2,540

Common stock available for conversion of Series A Redeemable Convertible Preferred Stock
4,915

Total
13,971