BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 21,756	$ 35,256
Marketable securities	59,798	67,958
Prepaid expenses and other current assets	3,039	2,478
Total current assets	84,593	105,692
Restricted cash	3,235	3,235
Property and equipment, net	4,722	5,113
Right-of-use asset	26,778	27,165
Prepaid expenses and other non-current assets	314	110
Total assets	119,642	141,315
Current liabilities:
Accounts payable	2,069	3,983
Accrued expenses and other current liabilities	5,938	12,533
Deferred revenue	30,952	33,734
Operating lease liability	2,761	2,744
Total current liabilities	41,720	52,994
Deferred revenue, net of current portion	0	1,798
Other liabilities	2,779	2,841
Operating lease liability	14,960	15,045
Total liabilities	59,459	72,678
Commitments (Note 8)
Stockholders’ equity:
Additional paid-in capital	753,664	751,684
Accumulated other comprehensive (loss) income	(41)	8
Accumulated deficit	(693,446)	(683,061)
Total stockholders’ equity	60,183	68,637
Total liabilities and stockholders’ equity	119,642	141,315
Voting Common Stock
Stockholders’ equity:
Common stock	5	5
Non-voting Common Stock
Stockholders’ equity:
Common stock	$ 1	$ 1

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).