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v3.22.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Cash flows from operating activities: |  |  |
Net loss |  | $ (25,649) | $ (24,156)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Stock option compensation expense |  | 7,832 | 3,505
Restricted stock compensation expense |  |  | 406
Depreciation expense |  | 146 | 167
Amortization of right of use assets |  | 322 | 25
Amortization of debt discount |  | 323 |
Warrant liability fair value adjustment |  |  | 2,832
Non-cash interest income |  |  | (1)
Interest expense accrued related to convertible notes |  | 186 | 160
Changes in assets and liabilities: |  |  |
Increase (decrease) in prepaid expenses and other assets |  | 813 | (910)
Increase (decrease) in accounts receivable |  | 13 | (36)
Increase in inventories |  | (557) | (201)
Decrease in accounts payable |  | (1,136) | (4,396)
Decrease in accrued expenses |  | (2,148) | 0
Decrease in lease liabilities |  | (322) |
Decrease in deferred revenue |  | (2,427) | (263)
Net cash used in operating activities |  | (22,604) | (22,868)
Cash flows from investing activities: |  |  |
Purchase of property, plant and equipment |  | (143) | (782)
Net cash used in investing activities |  | (143) | (782)
Cash flows from financing activities: |  |  |
Principal payments of financing leases |  |  | (26)
Payments related to registration costs |  |  | (106)
Net proceeds from Public Offerings | [1] |  | 39,764
Fees paid related to preferred stock conversions |  |  | (1)
Net proceeds from ATM Offering | [2],[3] | 3,923 | 866
Net proceeds from debt financing | [4] | 14,437 |
Proceeds from the exercise of stock options |  | 4 | 0
Proceeds from the exercise of warrants |  | 2,458 | 1,858
Net cash provided by financing activities |  | 20,822 | 42,355
Foreign currency effects on cash |  | 122 | (132)
Net (decrease) increase in total cash |  | (1,803) | 18,573
Total Cash, Cash Equivalents and Restricted Cash: |  |  |
Beginning of period |  | 28,756 | 10,183
End of period |  | 26,953 | 28,756
Cash |  | 22,802 | 28,575
Restricted Cash |  | 4,151 | 181
Total |  | 26,953 | 28,756
Supplemental Disclosure of Cash Flow Information: |  |  |
Interest expense |  | 681 | 11
Supplemental Disclosure of Non-Cash Investing and Financing Activities: |  |  |
Conversions of preferred stock into common stock |  |  | 21
Shares settled for services |  | 57 |
Proceeds allocated to warrant |  | 1,171 |
Reclassification of 2019 warrants from liability to equity |  |  | 6,200
Right of use assets obtained in exchange for lease obligations |  | 192 | 729
Financing of D&O insurance premium |  | $ 886 | 781
Issuance of restricted stock for 2019 bonuses due to executive officers |  |  | $ 230
[1] | Includes gross proceeds of $44,243, less total issuance costs of $4,479.
[2] | For 2020, includes gross proceeds of $910, less total issuance costs of $44.
[3] | For 2021, includes gross proceeds of $4,044, less total issuance costs of $121.
[4] | Includes gross proceeds of $15,000 less total costs of $563.

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