v3.10.0.1
Stockholders’ Equity (Tables)
9 Months Ended
Sep. 29, 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
 
Nine Months Ended
 
September 29, 2018
 
September 30, 2017
 
September 29, 2018
 
September 30, 2017
 
 
 
 
 
 
 
 
Cost of revenue
$
87

 
$
117

 
$
219

 
$
314

Selling and marketing
631

 
287

 
1,827

 
828

Research and development
1,105

 
487

 
3,134

 
1,138

General and administrative
2,458

 
2,144

 
7,801

 
4,306

   Total stock-based compensation
$
4,281

 
$
3,035

 
$
12,981

 
$
6,586

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:
 
Nine Months Ended
 
September 29,
2018
 
September 30,
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%
 
32.0% - 33.4%
Expected dividend yield
 
Summary of Stock Option and RSU Activity
A summary of stock option, RSU, PSU, and MSU activity for the nine months ended September 29, 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

 
 
 
1,384

 
$
17.70

Settled (RSUs and PSUs)

 
 
 

 
 
 
(580
)
 
$
10.76

Exercised
(668
)
 
 
 
$
7.13

 
 
 

 

Canceled and forfeited
(197
)
 
 
 
$
11.36

 
 
 
(309
)
 
$
11.99

Outstanding as of September 29, 2018
3,729

 
6.08
 
$
9.04

 
$
48,740

 
2,345

 
$
14.88

Vested and exercisable as of September 29, 2018
2,433

 
4.86
 
$
7.49

 
$
35,554

 
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 September 29, 2018, we had reserved the following shares of common stock for future issuance in connection with the following (in thousands):
 
September 29, 2018
Options issued and outstanding
3,729

Restricted stock units issued and outstanding
2,345

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
4,983

Total
13,633