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STATEMENTS OF CASH FLOWS - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net loss | $ (14,209,000) | $ (7,158,000)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 1,322,000 | 963,000
Gain on loan forgiveness | (1,316,000) | 0
Loss on impairment of long-lived assets | 10,000 | 0
Loss on disposal of property and equipment | 12,000 | 0
Stock-based compensation expense | 7,616,000 | 4,138,000
Amortization of deferred commissions | 189,000 | 250,000
Amortization of debt issuance costs | 0 | 137,000
Amortization of right of use assets | 265,000 | 210,000
Change in fair value of warrant liability | 0 | (120,000)
Provision for accounts receivable | 73,000 | 128,000
Changes in operating assets and liabilities: |  |
Accounts receivable and unbilled receivables | (288,000) | (2,106,000)
Prepaid expenses and other assets | (355,000) | (241,000)
Accounts payable and accruals | 1,312,000 | 1,215,000
Operating lease liability | (273,000) | (208,000)
Deferred revenue | 662,000 | 886,000
Net cash used in operating activities | (4,980,000) | (1,906,000)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchase of equipment | (82,000) | 0
Software development costs | (1,425,000) | (1,157,000)
Patent costs | (64,000) | (141,000)
Payment for acquisition | (53,000) | 0
Net cash used in investing activities | (1,624,000) | (1,298,000)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Proceeds from common stock offering, net of transaction costs | 16,534,000 | 7,824,000
Proceeds from term loan | 0 | 1,302,000
Proceeds from exercise of options and warrants | 644,000 | 1,264,000
Payments related to settlement of employee stock-based awards | (622,000) | 0
Repayments of finance leases | (81,000) | (63,000)
Net cash provided by financing activities | 16,475,000 | 10,327,000
Net increase in cash and cash equivalents | 9,871,000 | 7,123,000
Cash and cash equivalents-beginning of period | 9,095,000 | 1,972,000
Cash and cash equivalents-end of period | 18,966,000 | 9,095,000
Cash and cash equivalents-end of period | 18,966,000 | 9,095,000
SUPPLEMENTAL CASH FLOW DISCLOSURES |  |
Interest paid | (8,000) | (6,000)
Income taxes paid | 7,000 | 0
Non cash investing and financing activities: |  |
Right-of-use assets and operating lease obligations recognized during the year | 482,000 | 0
Contingent consideration recorded in connection with acquisition | 134,000 | 0
Equipment acquired from finance leases | $ 122,000 | $ 20,000

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