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Stock-Based Compensation
9 Months Ended
Mar. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Stock-Based Compensation Stock-Based Compensation
There have been no changes to our stock-based compensation plan as disclosed in our 2023 Annual Report on Form 10-K.
Our stock-settled stock appreciation rights (“SSSARs”) compensation expense was $0.4 million and $0.3 million for the three months ended March 31, 2024 and 2023, respectively. Year-to-date SSSARs compensation expense was $1.0 million for the current-year period compared to $1.7 million for the prior-year period. At March 31, 2024, there was no unrecognized compensation expense related to SSSARs.
Our restricted stock compensation expense was $1.5 million and $0.4 million for the three months ended March 31, 2024 and 2023, respectively. Year-to-date restricted stock compensation expense was $4.2 million for the current-year period compared to $3.2 million for the prior-year period. At March 31, 2024, there was $6.9 million of unrecognized compensation expense related to restricted stock that we will recognize over a weighted-average period of 2 years.
Our performance units compensation expense was $1.6 million and $0.9 million for the three months ended March 31, 2024 and 2023, respectively. Year-to-date performance units compensation expense was $3.7 million for the current-year period compared to $2.0 million for the prior-year period. At March 31, 2024, there was $6.0 million of unrecognized compensation expense related to performance units that we will recognize over a weighted-average period of 2 years.