Share-based payments (Tables)

12 Months Ended

Dec. 31, 2025

Disclosure of terms and conditions of share-based payment arrangement [abstract]

Summary of the Number and Weighted Average Exercise Prices Movements in Stock Options

The following table illustrates the number and weighted average exercise prices of, and movements in, stock options during the year:

				Weighted					Weighted					Weighted
				average					average					average
	2025			exercise price		2024			exercise price		2023			exercise price
	Number stock options			€		Number stock options			€		Number stock options			€
Outstanding January 1,		3,869,188			12.36		3,830,652			9.46		3,181,538			9.69
Granted		630,000			14.74		860,000			19.79		936,000			6.53
Exercised		(408,989	)		1.75		(514,356	)		3.41		(241,825	)		1.45
Forfeited		(139,167	)		16.61		(307,108	)		14.79		(45,061	)		8.90
Outstanding December 31,		3,951,032			13.01		3,869,188			12.36		3,830,652			9.46

Summary of the Number and Weighted Average Purchase Prices Movements in Unvested RSU

The following table illustrates the number of and movements in unvested RSUs during the year:

	2025			2024			2023
	Number RSUs			Number RSUs			Number RSUs
Outstanding January 1,		1,272,790			1,033,814			795,694
Granted		651,005			728,784			528,004
Vested and settled		(471,455	)		(294,238	)		(209,671	)
Forfeited		(34,708	)		(195,570	)		(80,213	)
Outstanding December 31,		1,417,632			1,272,790			1,033,814

Summary of Fair Value Per Option at Each Grant/Measurements Date Using the Black-Scholes Formula

The input used in the measurement of the fair value per option at each grant/measurements date using the Black-Scholes formula (including the related number of options and the fair value of the options) were as follows:

	March 12,			March 12,			August 1,			April 15,			April 11,			April 11,			November 15,			April 6,
	2025			2025			2024			2024			2024			2024			2023			2023
Number of options		75,000			555,000			75,000			230,000			70,000			485,000			90,000			846,000
Fair value of the options (€)	€	11.86		€	12.19		€	11.65		€	15.41		€	16.83		€	16.90		€	12.27		€	5.92
Fair value of the ordinary shares (€)	€	14.71		€	14.71		€	14.43		€	18.97		€	20.80		€	20.80		€	15.12		€	7.36
Exercise price (€)	€	14.74		€	14.74		€	14.43		€	18.97		€	20.80		€	20.80		€	15.12		€	7.36
Expected volatility (%)		105	%		105	%		100	%		100	%		105	%		100	%		100	%		100	%
Expected life (years)		5.5			6.1			6.1			6.1			5.5			6.1			6.1			6.1
Risk-free interest rate (%)		4.3	%		4.3	%		4.0	%		4.7	%		4.7	%		4.7	%		4.6	%		3.6	%
Expected dividend yield	—			—			—			—			—			—			—			—