Summary of significant accounting policies (Tables)

6 Months Ended

Jun. 30, 2021

Summary of significant accounting policies

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

(in thousands)	June 30, 2021		June 30, 2020
Cash	$	59,829	$	9,789
Restricted cash		100		100
	$	59,929	$	9,889

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, 2021 and 2020 have been excluded from the computation of diluted weighted-average shares of common stock outstanding, as they would be anti-dilutive:

	June 30,
	2021	2020
Stock options(1)	2,016,036	1,003,516
Common stock warrants(1)	1,362,181	—
Convertible preferred stock(1)	—	5,670,295
	3,378,217	6,673,811

(1) Represents common stock equivalents.