A summary of the Company’s restricted stock unit activity with respect to the nine months ended October 1, 2022 is as follows:

	Number of Shares			Weighted Average Grant Date Fair Value
Nonvested at January 1, 2022		765		$	48.25
Granted		396		$	83.03
Vested		(357	)	$	42.20
Forfeited		(53	)	$	57.30
Nonvested at October 1, 2022		751		$	68.83

Of the 751 nonvested shares outstanding at October 1, 2022, 652 are service-based RSUs and 99 are market-based PRSUs. The fair value of the Company’s service-based RSUs was calculated based on the fair market value of the Company’s stock at the date of grant. The fair value of the Company’s market-based PRSUs granted during fiscal years 2022 and 2021 was calculated using a Monte Carlo simulation model at the date of the grant, resulting in a weighted average grant-date fair value per share of $85.49 and $80.04, respectively.

As of October 1, 2022 and January 1 2022, there was $33,262 and $21,019 of total unrecognized compensation cost related to restricted stock units granted under the Company’s stock plans, respectively. That cost is expected to be recognized over a weighted average period of 1.7 years and 1.5 years for October 1, 2022 and January 1, 2022, respectively.