Prepaid expenses and other current assets

12 Months Ended

Dec. 31, 2020

Prepaid expense and other current assets

Prepaid expenses and other current assets

4. Prepaid expenses and other current assets

Prepaid expenses and other current assets consist of the following:

	As of December 31,
	2020		2019
	(in thousands)
Warrants to purchase equity securities	$	3,816	$	554
Prepaid research and development contracts		1,674		1,999
Other current assets		1,575		1,398
Prepaid insurance		1,459		203
Accrued interest receivable		95		476
Total	$	8,619	$	4,630