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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 24,698 $ 36,830
Marketable securities 53,157  
Prepaid expenses 1,648 886
Other current assets 382 241
Total current assets 79,885 37,957
Marketable securities - non-current 1,000  
Other non-current assets 413 334
Operating lease right-of-use asset 82 131
Property, equipment and leasehold improvements, net 34 53
Total assets 81,414 38,475
Current liabilities:    
Accounts payable 3,938 2,849
Accrued expenses 4,403 3,808
Term loan 7,000 5,833
Term loan derivative liability   114
Operating lease liability 92 120
Total current liabilities 15,433 12,724
Term loan 5,428 8,652
Operating lease liability 3 24
Other non-current liabilities 35  
Total liabilities 20,899 21,400
Commitments and contingencies (Note 12)
Stockholders’ equity:    
Preferred stock: $0.001 par value; 5,000,000 shares authorized at June 30, 2022 and December 31, 2021; no shares issued or outstanding at June 30, 2022 and December 31, 2021.
Common stock: $0.001 par value; 200,000,000 shares authorized at June 30, 2022 and December 31, 2021; and 39,719,572 and 28,505,804 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively. 40 29
Additional paid-in capital 256,908 197,963
Accumulated other comprehensive loss (135)  
Accumulated deficit (196,298) (180,917)
Total stockholders’ equity 60,515 17,075
Total liabilities and stockholders’ equity $ 81,414 $ 38,475