Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 17,893	$ 2,416
Marketable securities, available for-sale	84,777	25,718
Incentive and tax receivables	3	154
Prepaid expenses and other current assets	1,645	202
Deferred offering costs	0	1,398
Total current assets	104,318	29,888
Property, plant and equipment-net	780	444
Total assets	105,098	30,332
Current liabilities:
Accounts payable	10,114	8,606
Accrued liabilities	726	1,939
Other current liabilities	255	489
Total current liabilities	11,095	11,034
Other liabilities	85	276
Total liabilities	11,180	11,310
Commitments and Contingencies	0	0
Convertible preferred stock, $0.01 par value, no shares authorized, issued or outstanding as of September 30, 2021; 11,260,608 shares authorized, issued and outstanding as of December 31, 2020: aggregate liquidation preference of $70,254 as of December 31, 2020		73,037
Stockholders' (deficit) equity:
Common stock, $0.01 par value; 200,000,000 shares authorized, 40,053,157 and 12,767,909 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively Additional paid-in-capital	401	71
Additional paid-in-capital	167,440	1,633
Accumulated other comprehensive income	131	10
Accumulated deficit	(74,054)	(55,729)
Total stockholders' equity (deficit)	93,918	(54,015)
Total liabilities, convertible preferred stock and stockholders' equity (deficit)	$ 105,098	$ 30,332