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Stock-Based Compensation (Tables)
6 Months Ended
Dec. 27, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Stock Option Awards Outstanding
A summary of stock option awards outstanding as of December 27, 2020 and changes during the six months then ended is as follows:
(shares in thousands)Number of SharesWeighted Average Exercise Price
Outstanding at June 28, 2020983 $37.88 
Granted— $— 
Exercised(738)$40.65 
Forfeited or expired(10)$64.51 
Outstanding at December 27, 2020235 $27.94 
Schedule of Nonvested Restricted Stock Awards and Restricted Stock Unit Awards Outstanding
A summary of nonvested restricted stock awards (RSAs) and restricted stock unit awards (RSUs) outstanding as of December 27, 2020 and changes during the six months then ended is as follows:
(awards and units in thousands)Number of RSAs/RSUs  Weighted Average 
Grant-Date Fair Value
Nonvested at June 28, 20202,932 $43.89 
Granted1,021 $66.81 
Vested(1,118)$37.56 
Forfeited(137)$41.39 
Nonvested at December 27, 20202,698 $55.50 
Schedule of Total Stock-Based Compensation Expense
Total stock-based compensation expense was classified in the consolidated statements of operations as follows:
 Three months endedSix months ended
(in millions of U.S. Dollars)December 27, 2020December 29, 2019December 27, 2020December 29, 2019
Cost of revenue, net$3.7 $2.4 $7.1 $4.4 
Research and development2.2 2.0 4.6 4.1 
Sales, general and administrative7.8 7.2 15.7 18.6 
Total stock-based compensation expense$13.7 $11.6 $27.4 $27.1