Shareholders’ equity (Tables)

6 Months Ended

Jun. 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 six months ended June 30, 2023 and 2022 and the expense recognized in the condensed consolidated statements of operations:


	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
	(in thousands, except share and per share data)
Stock options
Options granted during period	547,600		362,280		4,298,400		4,734,575
Weighted average exercise price	$	2.75	$	2.33	$	2.88	$	2.78
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	$	977	$	696	$	1,852	$	1,454
General and administrative	1,987		1,369		3,243		2,346
Total stock compensation expense	$	2,964	$	2,065	$	5,095	$	3,800