In July 2018, the Board of Directors (the "Board") adopted the 2018 Equity Incentive Plan (the “2018 Plan”). The 2018 Plan became effective in connection with the Company's initial public offering ("IPO"). The number of shares reserved for issuance under the 2018 Plan increases automatically on January 1 of each year beginning in 2019 and continuing through 2028 by a number of shares of common stock equal to the lesser of (x) 5% of the total outstanding shares of the Company’s common stock and common stock equivalents as of the immediately preceding December 31 (rounded to the nearest whole share) and (y) a number of shares determined by the Company's the Board. As of September 30, 2023, there were 42,317,925 shares reserved for future issuance under the 2018 Plan.

Pursuant to the 2018 Plan, the Company issues stock options to employees and directors. The option price, number of shares and grant date are determined at the discretion of the Board. For so long as the option holder performs services for the Company, the options generally vest over 48 months, on a monthly or quarterly basis, with certain options subject to an initial annual cliff vest, and are exercisable for a period not to exceed ten years from the date of grant. The Company’s policy for issuing stock upon stock option exercise is to issue new common stock.

The summary of the Company’s stock option activity is as follows:


	Number of Options			Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term		Aggregate Intrinsic Value
						(In years)		(In thousands)
Outstanding at October 1, 2022		10,802,882		$	13.37		4.5	$	10,956
Exercised		(2,005,776	)	$	10.64
Forfeited		(247,149	)	$	14.20
Outstanding at September 30, 2023		8,549,957		$	13.99		3.6	$	1,689
At September 30, 2023
Options exercisable		8,549,957		$	13.99		3.6	$	1,689
Options vested and expected to vest		8,549,957		$	13.99		3.6	$	1,689

The Company granted no options in fiscal 2023, 2022, and 2021. Options vested in fiscal 2023, 2022 and 2021, respectively, have a fair value of $2.6 million, $6.6 million, and $10.8 million. As of September 30, 2023, all outstanding stock options have vested and the Company had no unrecognized stock-based compensation expense related to stock options. As of October 1, 2022, the Company had $0.4 million of unrecognized stock-based compensation expense related to stock options, which were expected to be recognized

over a weighted-average period of 0.2 years. The total intrinsic value of stock options exercised was $15.3 million, $58.0 million and $242.7 million for fiscal 2023, 2022 and 2021, respectively.

Pursuant to the 2018 Plan, the Company issues RSUs to employees and directors. RSUs vest quarterly over the service period, which is generally four years with certain awards subject to an initial annual cliff vest. The summary of the Company’s RSU activity is as follows:


	Number of Units			Weighted-Average Grant Date Fair Value		Aggregate Intrinsic Value
						(In thousands)
Outstanding at October 1, 2022		8,308,177		$	19.25	$	115,484
Granted		5,272,828		$	17.33
Released		(4,458,367	)	$	16.66
Forfeited		(1,460,603	)	$	19.34
Outstanding at September 30, 2023		7,662,035		$	19.42	$	98,917
At September 30, 2023
Units expected to vest		6,618,791		$	19.39	$	85,449

As of September 30, 2023 and October 1, 2022, the Company had $111.6 million and $120.6 million of unrecognized stock-based compensation expense related to RSUs, each of which are expected to be recognized over a weighted-average period of 2.4 and 2.5 years, respectively.

Pursuant to the 2018 Plan, the Company has issued and may issue certain PSUs that vest on the satisfaction of service and performance conditions. The number of shares vested at the end of the performance period are based on the extent to which the corresponding performance goals have been achieved. The number of shares vested during the twelve months ended September 30, 2023, includes performance achievement adjustments of a net reduction of 12,895 units. The summary of the Company’s PSU activity is as follows:


	Number of Units			Weighted-Average Grant Date Fair Value		Aggregate Intrinsic Value
						(In thousands)
Outstanding at October 1, 2022		398,077		$	26.96	$	5,533
Granted		249,370		$	17.54
Released		(263,158	)	$	26.26
Forfeited		(119,098	)	$	21.45
Outstanding at September 30, 2023		265,191		$	21.27	$	3,424

As of September 30, 2023 and October 1, 2022, the Company had $0.3 million and $0.4 million of unrecognized stock-based compensation expense related to PSUs, which is expected to be recognized over a weighted-average period of 1.2 and 0.6 years, respectively.

Total stock-based compensation expense by function category was as follows:


	September 30, 2023		October 1, 2022		October 2, 2021
(In thousands)
Cost of revenue	$	2,038	$	1,620	$	988
Research and development		35,530		30,724		25,075
Sales and marketing		15,677		15,335		13,570
General and administrative		23,612		27,961		22,494
Total stock-based compensation expense	$	76,857	$	75,640	$	62,127