Shareholders’ equity (Tables)

9 Months Ended

Sep. 30, 2023

Stockholders' Equity Note [Abstract]

Schedule of stock based compensation expense

The table below summarizes information about the Company’s stock-based compensation for the three and nine months ended September 30, 2023 and 2022 and the expense recognized in the condensed consolidated statements of operations:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022
	(in thousands, except share and per share data)
Stock options
Options granted during period	784,240		62,700		5,082,640		4,797,000
Weighted average exercise price	$	2.25	$	2.37	$	2.78	$	2.77
Restricted stock units (“RSUs”)
Restricted stock units granted during period	—		—		1,344,550		—
Grant date fair value	$	—	$	—	$	2.90	$	—
Stock compensation expense
Research and development	$	1,002	$	736	$	2,854	$	2,191
General and administrative	1,481		978		4,724		3,324
Total stock compensation expense	$	2,483	$	1,714	$	7,578	$	5,515