6. Restricted Cash

At March 31, 2021 and December 31, 2020, the Company had $3.1 million in restricted cash, all of which was classified as long-term on the Company’s condensed consolidated balance sheets, and all of which was attributable to the 2019 Lease (See Note 9).

In connection with the execution of the 2019 Lease, the Company was required to provide the landlord with a letter of credit in the amount of $3.1 million that will expire 95 days after expiration or early termination of the 2019 Lease. The Company will have the right, under certain conditions, to reduce the amount of the letter of credit to $2.1 million in October 2023.

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheets that sum to the total of the amounts shown in the Company’s condensed consolidated statement of cash flows as of March 31, 2021, December 31, 2020, March 31, 2020 and December 31, 2019 (in thousands):