​

​

Quarter ended March 31, 

​

  ​ ​ ​

2026

  ​ ​ ​

2025

​

​

(in thousands)

Grants:

​

​

​

​

​

​

Units:

​

​

​

​

​

​

Performance-based restricted share units ("RSUs")

​

​

260

​

​

185

Time-based RSUs

​

​

241

​

​

260

Stock options

​

​

270

​

​

187

Grant date fair value:

​

​

​

​

​

​

Performance-based RSUs

​

$

23,641

​

$

18,788

Time-based RSUs

​

​

21,996

​

​

26,484

Stock options

​

​

10,591

​

​

8,138

Total

​

$

56,228

​

$

53,410

Vesting and exercise:

​

​

​

​

​

​

Performance-based RSUs vested

​

​

98

​

​

—

Time-based RSUs vested

​

​

176

​

​

185

Stock options exercised

​

​

217

​

​

126

Stock-based compensation expense

​

$

2,447

​

$

11,084