Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF CASH FLOWS

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Cash flows from operating activities:    
Net loss $ (3,904,000) $ (3,292,000)
Adjustments to reconcile net loss to net cash used in operating activities:    
Warrant inducement expense 0 567,000
Stock-based compensation 480,000 254,000
Depreciation and amortization 29,000 19,000
Changes in operating assets and liabilities:    
Accounts receivable (29,000) (58,000)
Inventories (1,447,000) (588,000)
Prepaid expenses and other assets 105,000 (506,000)
Accounts payable 551,000 467,000
Accrued liabilities 196,000 366,000
Other liabilities (15,000) 0
Net cash used in operating activities (4,034,000) (2,771,000)
Cash flows from investing activities:    
Purchases of property and equipment (7,000) (26,000)
Net cash used in investing activities (7,000) (26,000)
Cash flows from financing activities:    
Proceeds from issuance of common stock upon warrant exercises, net of issuance costs 0 5,095,000
Repayment of capital lease (6,000) (6,000)
Net cash (used in) provided by financing activities (6,000) 5,089,000
Net (decrease) increase in cash and cash equivalents (4,047,000) 2,292,000
Cash and cash equivalents as of beginning of period 13,108,000 7,415,000
Cash and cash equivalents as of end of period 9,061,000 9,707,000
Supplemental disclosure of cash flow information:    
Cash paid for interest 1,000 1,000
Noncash Investing and Financing Activities:    
Convertible preferred stock dividend $ 0 $ 20,000