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Share-Based Compensation (Tables)
9 Months Ended
Sep. 28, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Shares Available for Grant
The following table summarizes the shares available for grant under the 2018 Plan:
Shares Available for Grant
Balance - December 31, 20238,230,500 
Authorized2,144,521 
Granted(1)
(3,258,068)
Shares withheld to cover taxes71,057 
Forfeited274,243 
Balance - September 28, 20247,462,253 
__________
(1) Includes 225,967 shares reserved for issuance pursuant to performance stock units if 200% of the applicable performance target is achieved.
Schedule of Fair Value Assumptions
Following are the assumptions used in the Black-Scholes valuation model for options granted during the periods shown below:
Three Months EndedNine Months Ended
September 28,
2024
September 30,
2023
September 28,
2024
September 30,
2023
Risk-free interest rate3.9%N/A4.3%4.1%
Average expected term (years)7.0N/A7.07.0
Expected volatility55.3%N/A55.0%55.3%
Dividend yieldN/AN/AN/AN/A
Schedule of Stock Option Activity
The following table summarizes the Company’s stock option activity during the nine months ended September 28, 2024:
Number
of
Stock
Options
Weighted
Average
Exercise
Price
Weighted
Average
Remaining
Contractual
Life (Years)
Aggregate
Intrinsic
Value (in thousands)(1)
Outstanding at December 31, 20234,477,120 $23.04 5.4$12,915 
Granted1,069,541 $9.33 $— 
Exercised(6,033)$3.00 $23 
Canceled/Forfeited(133,966)$31.89 $— 
Outstanding at September 28, 20245,406,662 $20.13 5.6$9,639 
Vested and exercisable at September 28, 20243,482,392 $23.29 3.7$9,544 
Vested and expected to vest at September 28, 20244,818,333 $21.32 5.1$9,591 
__________
(1) Aggregate intrinsic value is calculated as the difference between the value of common stock on the transaction date and the exercise price multiplied by the number of shares issuable under the stock option. Aggregate intrinsic value of shares outstanding at the beginning and end of the reporting period is calculated as the difference between the value of common stock on the beginning and end dates, respectively, and the exercise price multiplied by the number of shares outstanding.
Schedule of RSU Activity
The following table summarizes the Company’s RSU activity during the nine months ended September 28, 2024:
Number of UnitsWeighted
Average
Grant Date Fair Value Per Unit
Unvested at December 31, 20231,411,310 $19.60 
Granted1,736,593 $9.03 
Vested(1)
(614,738)$18.72 
Canceled/Forfeited(133,052)$15.95 
Unvested at September 28, 20242,400,113 $12.44 
________
(1) Includes 71,057 shares of common stock that were withheld to cover taxes on the release of vested RSUs and became available for future grants pursuant to the 2018 Plan.
Schedule of Performance Stock Options
Number of UnitsGrant Date Fair Value Per UnitPerformance Period
Tranche 180,307 $13.49 January 1, 2024 - December 31, 2024
Tranche 274,714 $14.50 January 1, 2024 - December 31, 2025
Tranche 370,946 $15.27 January 1, 2024 - December 31, 2026
Schedule of PSU Activity
The following table summarizes the Company’s PSU activity during the nine months ended September 28, 2024:
Number of UnitsWeighted Average Grant Date Fair Value Per Unit
Unvested at January 1, 2024— $— 
Granted225,967 $14.38 
Vested— $— 
Canceled/Forfeited— $— 
Unvested at September 28, 2024225,967 $14.38