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Share-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Restricted Share and TB-PIU Activity
The following table summarizes restricted shares activity under our share-based compensation plans for the nine months ended September 30, 2024:
Number of SharesWeighted Average Grant Date Fair Value
Unvested as of December 31, 2023
353,455 $25.82 
Granted167,502 $24.84 
Forfeited(20,980)$25.77 
Vested(152,642)$25.82 
Unvested as of September 30, 2024
347,335 $25.35 
The following table summarizes TB-PIUs activity under our share-based compensation plans for the nine months ended September 30, 2024:
Number of TB-PIUsWeighted Average Grant Date Fair Value
Unvested as of December 31, 2023
194,415 $25.76 
Granted127,795 $24.57 
Vested(93,577)$25.63 
Unvested as of September 30, 2024
228,633 $25.15 
Schedule of Payouts for Defined Performance under PB-PIUs
The number of earned awards following the end of the performance period will be determined based on the percentile rank of COPT Defense’s total shareholder return (“TSR”) relative to a peer group of companies, as set forth in the following schedule:
Percentile Rank Earned PB-PIUs Payout %
75th or greater 
100% of PB-PIUs granted
50th (target) 
50% of PB-PIUs granted
25th 
25% of PB-PIUs granted
Below 25th 
0% of PB-PIUs granted