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
6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Cash flows from operating activities:    
Net loss $ (11,543) $ (11,573)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 184 190
Stock based compensation expense 1,986 2,480
Amortization of operating lease right-of-use assets 294 268
Amortization of finance lease right-of-use assets 3 5
Amortization of bond discount (19) 73
Changes in operating assets and liabilities:    
Operating lease liabilities (312) (266)
Prepaid expenses and other current assets 814 4,282
Accounts payable (276) (13)
Accrued expenses and other liabilities (6) (1,726)
Net cash used in operating activities (8,875) (6,280)
Cash flows from investing activities:    
Purchase of marketable debt securities (7,938)
Proceeds from maturities of marketable debt securities 7,000 9,400
Purchases of leasehold improvements and equipment (202)
Net cash (used in)/provided by investing activities (938) 9,198
Cash flows from financing activities:    
Net proceeds from public offerings of common stock and warrants 9,244
Payments of finance lease liability – principal (2) (5)
Net cash provided by/(used in) financing activities 9,242 (5)
Net (decrease)/increase in cash, cash equivalents and restricted cash (571) 2,913
Cash, cash equivalents and restricted cash at beginning of period 5,037 7,080
Cash, cash equivalents and restricted cash at end of period 4,466 9,993
Supplemental non-cash financing and investing activities:    
Unrealized gain on marketable debt securities $ 170 $ 310