Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Cash Flow (Unaudited)

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Condensed Consolidated Statements of Cash Flow (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Cash flows from operating activities:    
Net loss $ (5,824) $ (5,513)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 94 93
Stock based compensation expense 995 1,272
Amortization of operating lease right-of-use assets 145 132
Amortization of finance lease right-of-use assets 1 4
Amortization of bond discount 18 44
Changes in operating assets and liabilities:    
Operating lease liabilities (154) (132)
Prepaid expenses and other current assets (393) 2,420
Accounts payable (41) (102)
Accrued expenses and other liabilities (610) (2,305)
Net cash used in operating activities (5,769) (4,087)
Cash flows from investing activities:    
Proceeds from maturities of marketable debt securities 2,000 3,000
Net cash provided by investing activities 2,000 3,000
Cash flows from financing activities:    
Net proceeds from public offering of common stock 54
Payments of finance lease liability – principal (1) (4)
Net cash provided by/(used in) financing activities 53 (4)
Net decrease in cash, cash equivalents and restricted cash (3,716) (1,091)
Cash, cash equivalents and restricted cash at beginning of period 5,037 7,080
Cash, cash equivalents and restricted cash at end of period 1,321 5,989
Supplemental non-cash financing and investing activities:    
Unrealized gain on marketable debt securities $ 87 $ 229