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Stockholders' Equity And Stock-Based Compensation (Tables)
 6 Months Ended
Mar. 26, 2021
Stockholders' Equity And Stock-Based Compensation [Abstract]  
Summary Of Stock Options Issued To Officers, Directors, And Employees Under 2000 Stock Incentive Plan And 2005 Stock Plan
The following table summarizes information about PSOs granted to our executive officers that have vested:
Grant DateAggregate Shares Granted at Target Award
Aggregate Shares Exercisable at Vest Date (1)
Percentage Vested of Target AwardVested Date
December 15, 2015419,623 334,623 125 %December 2018
December 15, 2016276,199 240,539 95 %December 2019
December 15, 2017264,000 253,440 96 %December 2020
(1)Aggregate shares exercisable at vest date does not include any shares that were cancelled before the vest date after they were granted.
The following table summarizes information about stock options issued under our 2020 Stock Plan:
SharesWeighted-Average
Exercise Price		Weighted-Average
Remaining
Contractual Life
Aggregate
Intrinsic
Value (1)
 (in thousands) (in years)(in thousands)
Options outstanding at September 25, 20206,599 $53.30 
Grants283 92.08 
Exercises(1,371)46.19 
Forfeitures and cancellations(9)62.36 
Options outstanding at March 26, 20215,502 57.05 6.12$225,563 
Options vested and expected to vest at March 26, 20215,313 56.51 6.04221,624 
Options exercisable at March 26, 20213,572 $50.31 5.12$171,130 
(1)Aggregate intrinsic value is based on the closing stock price of our Class A common stock on March 26, 2021 of $98.22 and excludes the impact of options that were not in-the-money.
Summary Of Restricted Stock Units Issued To Officers, Directors And Employees Under 2005 Stock Incentive Plan The following table summarizes information about RSUs issued under our 2020 Stock Plan:
SharesWeighted-Average
Grant Date
Fair Value 
 (in thousands)
Non-vested at September 25, 20202,979 $62.70 
Granted1,383 89.75 
Vested(1,012)60.18 
Forfeitures(90)65.54 
Non-vested at March 26, 20213,260 $74.88 
Schedule Of Fair Value Of Stock-Based Awards Estimated Using Weighted-Average Assumptions
The weighted-average assumptions used in the determination of the fair value of our stock options were as follows:
 Fiscal Quarter EndedFiscal Year-To-Date Ended
 March 27,
2020		March 26,
2021		March 27,
2020
Expected term (in years)4.914.884.91
Risk-free interest rate0.6 %0.4 %1.7 %
Expected stock price volatility25.8 %28.7 %24.0 %
Dividend yield1.3 %1.1 %1.3 %
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs
The following two tables separately present stock-based compensation expense both by award type and classification in our condensed consolidated statements of operations (in thousands):
Expense - By Award Type
 Fiscal Quarter EndedFiscal Year-To-Date Ended
 March 26,
2021		March 27,
2020		March 26,
2021		March 27,
2020
Compensation expense
Stock options$3,224 $3,974 $7,710 $8,520 
Restricted stock units19,853 15,850 40,246 32,817 
Employee stock purchase plan1,336 1,127 2,770 2,228 
Total stock-based compensation24,413 20,951 50,726 43,565 
Benefit from income taxes(3,859)(3,521)(8,071)(7,115)
Total stock-based compensation, net of tax$20,554 $17,430 $42,655 $36,450 

Expense - By Income Statement Line Item Classification
 Fiscal Quarter EndedFiscal Year-To-Date Ended
 March 26,
2021		March 27,
2020		March 26,
2021		March 27,
2020
Compensation expense
Cost of products and services$489 $507 $1,123 $1,050 
Research and development7,190 6,179 15,123 13,166 
Sales and marketing9,110 7,702 $18,906 $15,876 
General and administrative7,624 6,563 15,574 13,473 
Total stock-based compensation expense24,413 20,951 50,726 43,565 
Benefit from income taxes(3,859)(3,521)(8,071)(7,115)
Total stock-based compensation, net of tax$20,554 $17,430 $42,655 $36,450 
Schedule of Tax Benefit from Exercise of Options
Schedule of Stock Repurchase Authorizations The following table summarizes the initial amount of authorized repurchases as well as additional repurchases approved by our Board of Directors as of March 26, 2021 (in thousands):
Authorization PeriodAuthorization Amount
Fiscal 2010: November 2009$250,000 
Fiscal 2010: July 2010300,000 
Fiscal 2011: July 2011250,000 
Fiscal 2012: February 2012100,000 
Fiscal 2015: October 2014200,000 
Fiscal 2017: January 2017200,000 
Fiscal 2018: July 2018350,000 
Fiscal 2019: July 2019350,000 
Total$2,000,000 
Schedule of Stock Repurchase Activity
The following table provides information regarding share repurchase activity under the program during fiscal 2021:
Quarterly Repurchase ActivityShares
Repurchased
Cost in thousands (1)
Average Price Paid Per Share (2)
Q1 - Quarter ended December 25, 2020450,399 $39,985 $88.78 
Q2 - Quarter ended March 26, 2021757,019 70,790 93.51 
Total1,207,418 $110,775 
(1)Cost of share repurchases includes the price paid per share and applicable commissions.
(2)Average price paid per share excludes commission costs.
Dividends Declared
The following table summarizes dividends declared under the program during fiscal 2021:
Fiscal PeriodAnnouncement DateRecord DatePayment DateCash Dividend Per Common Share
Estimated
Dividend Payment(1)
Fiscal 2021
Q1 - Quarter ended December 25, 2020January 28, 2021February 9, 2021February 19, 2021$0.22 $22.4 million
Q2 - Quarter ended March 26, 2021May 4, 2021May 17, 2021May 25, 2021$0.22 $22.3 million
(1)The dividend payment amount is estimated based on the number of shares of our Class A and Class B common stock that we estimate will be outstanding as of the Record Date.