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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:          
Net loss $ (9,613) $ (8,449) $ (19,545) $ (14,787)  
Adjustments to reconcile net loss to net cash flows from operating activities:          
Stock-based compensation expense     1,505 835  
Amortization of right to use lease asset     17 20  
Non-cash interest expense     158 107  
Change in fair value of derivative     (504) 172  
Changes in operating assets and liabilities:          
Prepaid expenses and other assets     454 587  
Accounts payable, accrued expenses and other liabilities     2,147 666  
Accrued interest on convertible notes payable - related party     298 41  
Net cash flows from operating activities     (15,470) (12,359)  
CASH FLOWS FROM FINANCING ACTIVITIES:          
Net proceeds from convertible note payable - related party     0 10,000  
Net proceeds from issuance of common stock     0 6,815  
Net cash flows from financing activities     0 16,815  
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS     (15,470) 4,456  
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD     39,648 27,142 $ 27,142
CASH AND CASH EQUIVALENTS, END OF PERIOD $ 24,178 $ 31,598 24,178 31,598 $ 39,648
NONCASH FINANCING ACTIVITIES:          
Payment of preferred stock dividends in common stock     49 67  
Fair value of derivative related to related party convertible note payable     0 420  
Reclassification of accrued bonus to additional paid in capital     200 60  
Noncash right to use lease asset     $ 111 $ 0