Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Cash Flows

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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES    
Net loss $ (16,487) $ (14,315)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation 8,458 2,405
Issuance of common stock to consultants 244
Depreciation and amortization 225 503
Loss on extinguishment of debt (7)
Gain on forgiveness of PPP loan (431)
Change in fair value of warrant liability (1,023)
Change in fair value of notes 149
Loss on disposal of equipment 52
Amortization of deferred debt issuance costs 73
Amortization of right of use assets 494
Changes in operating assets and liabilities:    
Prepaid and other assets (500) 182
Accounts payable (126) 413
Accrued expenses 87 323
Lease liability (396)
Net cash used in operating activities (8,537) (11,140)
CASH FLOWS FROM INVESTING ACTIVITIES    
Purchase of equipment (552) (751)
Purchase of patents (264) (61)
Net cash used in investing activities (816) (812)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from the issuance of common stock and warrants, net of fees 855
Proceeds from the issuance of common stock / At-the-market offering 1,295
Offering costs for the issuance of common stock / At-the-market offering (46)
Proceeds from issuance of senior secured convertible notes and common stock warrants 3,500
Proceeds from issuance of Series D preferred stock and warrants, net of fees 1,039
Proceeds from exercise of stock options 186
Net cash provided by financing activities 186 6,643
Net decrease in cash (9,167) (5,309)
Cash — beginning of year 15,297 6,130
Cash — end of year 6,130 821
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:    
Issuance of common stock warrants in connection with SLOC 223
Issuance of common stock warrants in connection with consideration payable 86
Unpaid equipment included in accounts payable 206 94
SUPPLEMENTAL CASH FLOW INFORMATION    
Cash paid for interest $ 6 $ 7