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Unaudited Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 35,482 $ 34,050
Short-term investments 44,762 40,312
Prepaid expenses and other current assets 1,583 5,548
License agreement receivable 0 2,463
License agreement contract asset 19,466 19,363
Restricted cash 380 380
Total current assets 101,673 102,116
Investments 13,943 23,594
Deferred offering costs 175 175
Restricted cash 163 163
Operating lease right-of-use asset (See Note 7) 2,300 2,364
Total assets 118,254 128,412
Current liabilities:    
Accounts payable 8,918 7,149
Accrued expenses 4,601 7,495
Deferred revenue, current portion 1,083 1,189
Operating lease liability, current portion (See Note 7) 356 340
Warrant liabilities 0 130
Convertible debt and derivative liability (See Note 6) 12,391 0
Total current liabilities 27,349 16,303
Deferred revenue 2,111 2,727
Warrant liabilities 12,202 21,680
Convertible debt and derivative liability (See Note 6) 0 12,159
Operating lease liability (See Note 7) 2,487 2,581
Total liabilities 44,149 55,450
Commitments and contingencies
Stockholders’ equity:    
Preferred stock, $0.001 par value, authorized 5,000,000 shares as of March 31, 2024 and December 31, 2023; 0 shares issued and outstanding as of March 31, 2024 and December 31, 2023 0 0
Common stock, $0.001 par value, 150,000,000 shares authorized as of March 31, 2024 and December 31, 2023; 37,779,796 and 37,207,799 shares issued and outstanding as of March 31, 2024 and December 31, 2023, respectively 41 40
Additional paid-in capital 428,900 428,169
Accumulated deficit (354,836) (355,247)
Total stockholders' equity 74,105 72,962
Total liabilities and stockholders’ equity $ 118,254 $ 128,412