Stock-based compensation expense is included in general and administrative expenses in the condensed consolidated statements of operations. Following is a summary of stock-based compensation expense related to stock options and restricted stock awards for the three months ended December 31, 2022 and 2021, respectively.


	Three Months Ended
	December 31, 2022
	Shares	Weighted Average Exercise Price
Outstanding at beginning of period	27,507	$	14.31




Outstanding at end of period	27,507	14.31
Exercisable at end of period	27,271	$	14.29

As of both December 31, 2022 and September 30, 2022, there was less than $0.1 million of total unrecognized compensation costs related to unvested stock options. The costs remaining as of December 31, 2022 are expected to be recognized over a weighted-average period of 1.19 years.

During the three months ended December 31, 2022, the Company issued time-based and performance-based restricted stock awards. The time-based restricted shares granted to our non-employee directors vest on the first anniversary of the grant, while the time-based restricted shares granted to our executive officers and other employees generally vest ratably over two to three years from the date of grant. Performance-based restricted share awards vest subject to the achievement of performance and market conditions over a three-year performance period.


	Three Months Ended December 31, 2022
	Performance-Based Restricted Shares	Time-Based Restricted Shares	Total Restricted Shares
Beginning of period	436,146	412,042	848,188
Granted (a)	249,534	422,998	672,532
Vested	(334,736)	(232,071)	(566,807)

End of period	350,944	602,969	953,913

(a) Each of our performance shares represent a contingent right to receive one share of the Company's common stock if vesting is satisfied at the end of the three-year performance period. Our performance stock award plans provide that any performance shares earned in excess of the target number of performance shares issued may be settled in cash or additional shares at the discretion of the Compensation Committee. In November 2022, we issued 92,104 shares earned above target level based on the performance level achieved under the fiscal 2020 performance-based award plan.

As of December 31, 2022 and September 30, 2022, total unrecognized compensation costs related to unvested restricted stock awards was $11.8 million and $7.3 million, respectively. The costs remaining as of December 31, 2022 are expected to be recognized over a weighted average period of 2.14 years.