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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Cash flows from operating activities: |  |
Net loss | $ (8,595) | $ (9,813)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Stock-based compensation expense | 2,856 | 1,570
Common stock contribution to 401(k) | 118 | 123
Amortization of intangible assets |  | 225
Depreciation | 2 | 1
Accretion of long-term debt discount and debt issuance costs | 306 |
Non-cash lease expense | 14 | 47
Change in fair value of equity securities | (252) | 24
Changes in assets and liabilities: |  |
Trade and other receivables, net | 1,001 | (5)
Prepaid expenses and other assets | 213 | 269
Accounts payable and accrued liabilities | (105) | 3,122
Operating lease liabilities | (15) | (50)
Unearned revenue recognized under units-of-revenue method | (490) | (437)
Net cash used in operating activities | (4,947) | (4,924)
Cash flows from investing activities: |  |
Payments of consideration under RPAs, AAAs and CPPAs | (15,000) | (9,600)
Receipts under RPAs, AAAs and CPPAs | 7,771 | 2,366
Purchase of property and equipment | (17) |
Net cash used in investing activities | (7,246) | (7,234)
Cash flows from financing activities: |  |
Principal payments - debt | (3,616) |
Debt issuance costs and loan fees paid in connection with long-term debt | (581) |
Payment of preferred stock dividends | (1,368) | (1,368)
Repurchases of common stock | (13) |
Proceeds from exercise of options and other share-based compensation | 1,956 |
Taxes paid related to net share settlement of equity awards | (1,334) |
Net cash used in financing activities | (4,956) | (1,368)
Net decrease in cash, cash equivalents and restricted cash | (17,149) | (13,526)
Cash, cash equivalents and restricted cash at the beginning of the period | 159,550 | 57,826
Cash, cash equivalents and restricted cash at the end of the period | 142,401 | 44,300
Supplemental Cash Flow Information: |  |
Cash paid for interest | 3,780 |
Non-cash investing and financing activities: |  |
Accrual of contingent consideration under the Affitech CPPA | 3,000 |
Preferred stock dividend accrual | $ 1,368 | $ 1,368

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