CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	$ 22,938	$ 9,227
Accounts receivable, net	489	1,923
Prepaid expenses and other current assets	4,597	6,401
Short-term investments	69,427	110,918
Assets held for sale	1,181	2,563
Total current assets	98,632	131,032
Property and equipment, net	40,461	25,920
Operating lease right-of-use assets	3,468	5,431
Other assets	1,004	1,079
Long-term investments	59,994	99,584
Total assets	203,559	263,046
Current liabilities
Accounts payable	3,142	5,243
Current portion of operating lease liabilities	2,726	2,426
Accrued expenses and other current liabilities	3,995	6,622
Total current liabilities	9,863	14,291
Operating lease liabilities, net of current portion	1,646	4,366
Other liabilities	41	0
Total liabilities	11,550	18,657
Commitments and contingencies (Note 12)
Stockholders’ equity
Common stock, $0.0001 par value; 250,000,000 shares authorized; 187,878,790 and 184,428,472 shares issued as of December 31, 2025 and 2024, respectively; 177,268,720 and 173,818,402 shares outstanding as of December 31, 2025 and 2024, respectively	19	18
Additional paid-in capital	413,122	408,315
Treasury stock, at cost	(14,132)	(14,132)
Accumulated deficit	(207,000)	(149,812)
Total stockholders’ equity	192,009	244,389
Total liabilities and stockholders’ equity	$ 203,559	$ 263,046