Summary of significant accounting policies (Tables)

6 Months Ended

Jun. 30, 2022

Summary of significant accounting policies

Schedule of reconciliation of the components of cash and restricted cash reported in balance sheet

(in thousands)	June 30, 2022		June 30, 2021
Cash and cash equivalents	$	34,649	$	59,829
Restricted cash		100		100
	$	34,749	$	59,929

Schedule of potentially dilutive securities have been excluded from the computation of diluted weighted-average shares of common stock outstanding, as they would be anti-dilutive

The following potentially dilutive securities outstanding as of June 30, 2022 and 2021 have been excluded from the computation of diluted weighted-average shares of common stock outstanding, as they would be anti-dilutive:

	June 30,
	2022	2021
Stock options(1)	2,532,644	2,016,036
Common stock warrants(1)	1,303,112	1,362,181
	3,835,756	3,378,217

(1) Represents common stock equivalents.