Stock-based compensation (Tables)

9 Months Ended

Sep. 30, 2026

The following table presents the components of stock-based compensation expense:


(in millions)	Classification	Three months ended September 30,				Nine months ended September 30,
		2026		2025		2026		2025
Stock options	Equity	$	2.0	$	3.0	$	5.4	$	7.8
RSUs	Equity	9.6		4.1		29.9		27.5
Other	Both	0.9		0.2		1.2		(0.2)
Total		$	12.5	$	7.3	$	36.5	$	35.1
Award classification:
Equity		$	11.9	$	7.4	$	36.1	$	36.2
Liability		0.6		(0.1)		0.4		(1.1)

The following table presents information about outstanding stock options:


(options and intrinsic value in millions)	Number of options	Weighted average exercise price per option		Aggregate intrinsic value		Weighted average remaining term
Balance at December 31, 2025	11.7	$	21.18
Granted	6.9	10.81
Exercised	(0.8)	13.19
Forfeited	(7.9)	20.41
Balance at September 30, 2026	9.9	$	15.03	$	23.9	7.3 years
Expected to vest	6.2	11.56		22.9		9.3 years
Vested	3.7	20.81		1.0		4.0 years

The following table presents information about unvested RSUs:


(awards in millions)	Number of awards	Weighted average grant date fair value per award
Balance at December 31, 2025	6.7	$	17.88
Granted	5.9	9.27
Vested	(2.0)	18.05
Forfeited	(1.6)	14.27
Balance at September 30, 2026	9.0	$	11.94