Share-based payments (Tables)

12 Months Ended

Dec. 31, 2023

Share-based payments with service condition

Share-based payments

Schedule of fair value of options

	2023			2022
Fair value at grant date	$	7.8		$	31.9
Share price at grant date	$	10.4		$	42.9
Exercise price	$	10.4		$	42.9
Expected volatility		90	%		90	%
Expected life		5.9			5.9
Expected dividends		0.0			0.0
Risk-free interest rate		3.95	%		2.32	%

Share-based payments with market condition

Share-based payments

Schedule of fair value of options

	2022
Fair value at grant date	$	11.3
Share price at grant date	$	45.8
Exercise price	$	45.8
Expected volatility		70	%
Expected life		2.00
Expected dividends		0.00
Risk-free interest rate		2.41	%