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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)
$ in Thousands
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Current assets:      
Cash and cash equivalents $ 58,741   $ 186,605
Marketable securities 91,423    
Prepaid expenses and other current assets 5,555   11,200
Total current assets 155,719   197,805
Property and equipment, net 1,898   1,184
Operating lease right-of-use assets 16,805   141
Financing lease right-of-use assets 60   70
Restricted cash 927   927
Other assets     266
Total assets 175,409   200,393
Current liabilities:      
Accounts payable 2,362   1,942
Accrued expenses and other current liabilities [1] 5,001   9,194
Operating lease liabilities 802   153
Financing lease liabilities 2   23
Total current liabilities 8,167   11,312
Operating lease liabilities, net of current portion 13,406    
Total liabilities 21,573   11,312
Commitments and contingencies (Note 12)  
Stockholders' equity:      
Undesignated preferred stock, $0.0001 par value, 10,000,000 shares authorized as of June 30, 2023 and December 31, 2022, respectively; 0 share issued and outstanding at June 30, 2023 and December 31, 2022, respectively  
Common stock, $0.0001 par value; 150,000,000 shares authorized at June 30, 2023 and December 31, 2022; 35,906,037 shares issued as of June 30, 2023 and 35,664,658 shares issued as of December 31, 2022; and 35,861,714 shares outstanding as of June 30, 2023 and 35,620,335 shares outstanding as of December 31, 2022 4   4
Additional paid-in capital 334,005   329,211
Accumulated other comprehensive income (loss) (70)    
Accumulated deficit (180,103)   (140,134)
Total stockholders' equity 153,836 $ 171,340 189,081
Total liabilities and stockholders' equity $ 175,409   $ 200,393
[1] Includes related party amounts of $0 (accrued expenses and other current liabilities) at June 30, 2023; $78 (accrued expenses and other current liabilities) at December 31, 2022 (see Note 11).