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Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Cash flows from operating activities |  |
Net loss | $ (3,852) | $ 1,899
Adjustments to reconcile net loss to net cash (used in) provided by operating activities: |  |
Stock-based compensation | 1,661 | 1,657
Depreciation and amortization | 513 | 385
Non-cash lease expense | 36 | 39
Debt discount amortization | 48 | 61
Changes in operating assets and liabilities: |  |
Accounts receivable | (1,462) | (1,232)
Inventories | (1,157) | (259)
Prepaid expenses and other assets | 330 | 423
Accounts payable | 284 | 537
Accrued liabilities | 2,381 | 2,045
Net cash (used in) provided by operating activities | (1,218) | 5,555
Cash flows from investing activities |  |
Purchases of product license rights | (1,868) | 0
Purchases of property and equipment | (14) | 0
Net cash used in investing activities | (1,882) | 0
Cash flows from financing activities |  |
Repayment of long-term debt | (770) | (385)
Proceeds from employee stock purchase plan and stock option exercises | 176 | 272
Payment of tax withholding related to net share settlement of stock option exercises | 0 | (181)
Net cash used in financing activities | (594) | (294)
Change in cash and cash equivalents | (3,694) | 5,261
Cash and cash equivalents at beginning of period | 21,388 | 16,305
Cash and cash equivalents at end of period | 17,694 | 21,566
Supplemental disclosures of cash flow information |  |
Cash paid for interest | 362 | 426
Cash paid for income taxes | 0 | 0
Supplemental disclosures of non-cash transactions in investing and financing activities |  |
Right-of-use assets and liabilities obtained due to lease renewal | $ 153 | $ 0

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