Restricted Cash

12 Months Ended

Dec. 31, 2021

Restricted Cash And Cash Equivalents [Abstract]

Restricted Cash

5. Restricted cash

As of December 31, 2021 and 2020, the Company maintained standby letters of credit of $8.8 million and $2.1 million, respectively, which are collateralized with a bank account at a financial institution in accordance with the applicable lease agreements. The following table sets forth the standby letters of credit associated with the leases for each of the Company’s locations:

	December 31,
	2021		2020
	(in thousands)
Fremont, CA	$	6,676	$	-
Cambridge, MA		961		961
South San Francisco, CA		816		816
Seattle, WA		366		366
Total restricted cash	$	8,819	$	2,143