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Common Stock and Stock-Based Compensation (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 25, 2020 | Mar. 27, 2020
Summary of Common Stock Award Activity |  | The following table summarizes the Class A common stock awards activity for the fiscal years ended as follows:
|  | Number of Shares |  |  | Weighted-Average Grant-Date Fair Value |  |  | Weighted-Average Remaining Contractual Life |  |  | Aggregate Intrinsic Value |
|  |  |  |  |  |  |  | (In years) |  |  | (In thousands) |
Outstanding—March 29, 2019 |  |  | 400,000 |  |  | $ | 101.10 |  |  |  | 5.52 |  |  | $ | 40,440 |
Outstanding—March 27, 2020 |  |  | 400,000 |  |  | $ | 101.10 |  |  |  | 4.52 |  |  | $ | 40,440 |
Unvested—March 27, 2020 |  |  | 400,000 |  |  | $ | 101.10 |  |  |  | 4.52 |  |  | $ | 40,440 |
##### The following table summarizes the Class L common stock awards activity since March 29, 2019:
|  | Number of Shares |  |  | Weighted-Average Grant-Date Fair Value |  |  | Weighted-Average Remaining Contractual Life |  |  | Aggregate Intrinsic Value |
|  |  |  |  |  |  |  | (In years) |  |  | (In thousands) |
Outstanding—March 29, 2019 |  |  | 607,620 |  |  |  | 10.62 |  |  |  | 2.54 |  |  | $ | 6,454 |
Granted |  |  | 30,300 |  |  |  | 26.93 |  |  |  |  |  |  |  |  |
Canceled |  |  | (15,450 | ) |  |  | 10.03 |  |  |  |  |  |  |  |  |
Outstanding—March 27, 2020 |  |  | 622,470 |  |  | $ | 11.43 |  |  |  | 1.62 |  |  | $ | 7,115 |
Unvested—March 27, 2020 |  |  | 321,840 |  |  | $ | 11.67 |  |  |  | 1.72 |  |  | $ | 3,757 |
Schedule of Stock-Based Compensation Expense | The Company recorded stock-based compensation expense in the following expense categories of its unaudited consolidated statements of operations:
|  | Three-Month Period Ended |  |  | Nine-Month Period Ended |
|  | December 25, 2020 |  |  | December 27, 2019 |  |  | December 25, 2020 |  |  | December 27, 2019 |
Cost of sales |  | $ | 4,694 |  |  | $ | 47 |  |  | $ | 4,844 |  |  | $ | 137 |
Research and development |  |  | 2,984 |  |  |  | 20 |  |  |  | 3,037 |  |  |  | 65 |
Selling, general and administrative |  |  | 38,198 |  |  |  | 236 |  |  |  | 39,020 |  |  |  | 849 |
Total stock-based compensation |  | $ | 45,876 |  |  | $ | 303 |  |  | $ | 46,901 |  |  | $ | 1,051 |
| The Company recorded stock-based compensation expense in the following expense categories of its consolidated statements of income:
|  | Fiscal Years Ended |
|  | March 29, 2019 |  |  | March 27, 2020 |
Cost of sales |  | $ | 181 |  |  | $ | 183 |
Research and development |  |  | 74 |  |  |  | 87 |
Selling, general and administrative |  |  | 1,186 |  |  |  | 1,165 |
Total stock-based compensation |  | $ | 1,441 |  |  | $ | 1,435 |
Schedule of Conversions of Stock | The following table presents the respective number of shares of common stock and unvested restricted common stock issued in the Common Stock Conversion. The number of shares of common stock and unvested restricted common stock issuable are based upon the vesting provisions of the outstanding shares and reflect the shares vested and unvested at the date of conversion.
|  | Shares of Common Stock |  |  | Shares of Unvested Restricted Common Stock |  |  | Total Shares of Common Stock |
Class A common stock |  |  | 156,155,403 |  |  |  | — |  |  |  | 156,155,403 |
Class L common stock |  |  | 7,816,574 |  |  |  | 459,749 |  |  |  | 8,276,323 |
Total |  |  | 163,971,977 |  |  |  | 459,749 |  |  |  | 164,431,726 |
Schedule of RSU Activity | The following table summarizes the RSU activity for the nine-month period ended December 25, 2020:
|  | Number of Shares |  |  | Weighted-Average Grant-Date Fair Value |  |  | Weighted-Average Remaining Contractual Life |  |  | Aggregate Intrinsic Value |
|  |  |  |  |  |  |  | (In years) |  |  |  |
Outstanding—March 27, 2020 |  |  | — |  |  | $ | — |  |  |  | — |  |  | $ | — |
Granted |  |  | 1,426,944 |  |  |  | 14.04 |  |  |  |  |  |  |  |  |
Vested |  |  | (376 | ) |  |  | 14.00 |  |  |  |  |  |  |  |  |
Canceled |  |  | (28,920 | ) |  |  | 14.00 |  |  |  |  |  |  |  |  |
Outstanding—December 25, 2020 |  |  | 1,397,648 |  |  | $ | 14.04 |  |  |  | 1.74 |  |  | $ | 34,648 |
Schedule of PSU Activity | The following table summarizes the PSU activity for the nine-month period ended December 25, 2020:
|  | Number of Shares |  |  | Weighted-Average Grant-Date Fair Value |  |  | Weighted-Average Remaining Contractual Life |  |  | Aggregate Intrinsic Value |
|  |  |  |  |  |  |  | (In years) |  |  |  |
Outstanding—March 27, 2020 |  |  | — |  |  | $ | — |  |  |  | — |  |  | $ | — |
Granted |  |  | 650,302 |  |  |  | 15.05 |  |  |  |  |  |  |  |  |
Vested |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Canceled |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Outstanding—December 25, 2020 |  |  | 650,302 |  |  | $ | 15.05 |  |  |  | 2.90 |  |  | $ | 16,121 |
Schedule of Unvested Restricted Common Stock Activity | The following table summarizes unvested restricted common stock activity for the nine-month period ended December 25, 2020:
|  | Number of Shares |  |  | Weighted-Average Grant-Date Fair Value |  |  | Weighted-Average Remaining Contractual Life |  |  | Aggregate Intrinsic Value |
|  |  |  |  |  |  |  | (In years) |  |  |  |
Outstanding—March 27, 2020 |  |  | — |  |  | $ | — |  |  |  | — |  |  |  | — |
Common stock conversion |  |  | 459,749 |  |  |  | 14.00 |  |  |  |  |  |  |  |  |
Vested |  |  | (37,161 | ) |  |  | 14.00 |  |  |  |  |  |  |  |  |
Canceled |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Outstanding—December 25, 2020 |  |  | 422,588 |  |  | $ | 14.00 |  |  |  | 2.01 |  |  |  | 10,476 |
PSU |  |
Summary of Weighted-average Fair Value of PSUs | The weighted-average fair value of the PSUs was determined using the Monte Carlo simulation model incorporating the following weighted-average assumptions:
|  | Fiscal Year 2021 |
Performance term |  |  | 2.42 years |
Volatility |  |  | 49.9 | %
Risk-free rate of return |  |  | 0.17 | %
Dividend yield |  |  | — | %
Weighted-average fair value per share |  | $ | 14.00 |

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