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Share-Based Compensation, Common Stock Issuances and Common Stock (Tables)
 12 Months Ended
Dec. 28, 2019
Weighted-Average Assumptions for Options Granted
The weighted-average assumptions for Options granted in fiscal years 2019, 2018 and 2017 are included in the following table:
 
2019
 
2018
 
2017
Expected volatility
23.7
%
 
35.7
%
 
31.8
%
Expected dividends
—

 
—

 
—

Risk-free interest rate
2.3
%
 
2.6
%
 
1.9
%
Expected term (in years)
5.6

 
5.4

 
5.8
Summary of Options Outstanding
The summary of Options outstanding and changes during fiscal year 2019 are presented below:
 
Time
Options
 
Performance
Options
 
Total
Options
 
Weighted-
Average Fair Value
 
Weighted-
Average Exercise Price
 
Weighted-
Average Remaining Contractual Years
Outstanding as of December 29, 2018
2,713,564

 
1,222,832

 
3,936,396

 
$
9.45

 
$
22.44

 
 
Granted
922,893

 
195,692

 
1,118,585

 
$
10.63

 
$
32.60

 
 
Exercised
(688,964
)
 
(443,875
)
 
(1,132,839
)
 
$
7.58

 
$
18.11

 
 
Forfeited
(176,643
)
 
(30,268
)
 
(206,911
)
 
$
10.78

 
$
29.22

 
 
Performance adjustment(1)
—

 
(192,929
)
 
(192,929
)
 
$
15.31

 
$
23.19

 
 
Outstanding as of December 28, 2019
2,770,850

 
751,452

 
3,522,302

 
$
10.03

 
$
26.62

 
7.2
Vested and exercisable as of December 28, 2019
1,132,637

 
438,297

 
1,570,934

 
$
8.43

 
$
21.89

 
6.0

(1)
Represents an adjustment to the 2018 tranche of the 2016 Performance Option awards based on actual performance during the 2018 annual performance period. The actual performance for the 2018 annual performance period was certified by the Compensation Committee of our Board of Directors in the first quarter of fiscal year 2019.
Summary of Nonvested Restricted Shares
A summary of RSUs outstanding and changes during fiscal year 2019 is presented below.
 
Time-Based
RSUs
 
Performance
RSUs
 
Total
RSUs
 
Weighted-
Average
Fair
Value
Unvested as of December 29, 2018
1,036,841

 
356,716

 
1,393,557

 
$
30.71

Granted
481,599

 
186,825

 
668,424

 
$
35.09

Vested
(440,604
)
 
—

 
(440,604
)
 
$
28.39

Forfeited
(150,662
)
 
(65,142
)
 
(215,804
)
 
$
32.65

Performance adjustment (1)
—

 
(46,398
)
 
(46,398
)
 
$
32.85

Unvested as of December 28, 2019
927,174

 
432,001

 
1,359,175

 
$
33.24
Performance Shares  
Summary of Nonvested Restricted Shares
The summary of unvested RSAs and changes during fiscal year 2019 is presented below: 
 
Time-Based RSAs
 
Performance RSAs
 
Total RSAs
 
Weighted-
Average
Fair
Value
Unvested as of December 29, 2018
—

 
448,823

 
448,823

 
$
32.01

      Granted
116,713

 
233,426

 
350,139

 
$
34.56

Unvested as of December 28, 2019
116,713

 
682,249

 
798,962

 
$
33.13