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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 | $ (6,249) | $ (5,622)
Adjustments required to reconcile net loss to net cash used in operating activities: |  |
Stock-based compensation | 985 | 856
Amortization of premium or discount on marketable securities | (777) | 0
Unrealized losses on cash equivalents | (1) | 0
Changes in operating assets and liabilities: |  |
Trade receivables, prepaid expenses and other assets and operating lease right-of-use assets | (1,294) | (200)
Trade payables, accrued expenses, employee related obligations and other long-term liabilities | (612) | (512)
Operating lease liabilities | (34) | 0
Net cash used in operating activities | (7,982) | (5,478)
Cash Flows From Investing Activities: |  |
Proceeds from the sale of the MST Franchise | 0 | 5,000
Proceeds from sale and maturity of marketable securities | 11,600 | 0
Purchases of marketable securities | (15,169) | 0
Net cash (used in) provided by investing activities | (3,569) | 5,000
Cash Flows From Financing Activities: |  |
Proceeds related to issuance of common stock through at-the-market offerings, net of issuance costs | 0 | 156
Redemption of convertible preferred stock | 0 | (360)
Withholdings from exercise of options and issuance of shares for stock-based compensation arrangements, net | (4) | (13)
Net cash used in financing activities | (4) | (217)
Decrease in cash, cash equivalents and restricted cash | (11,555) | (695)
Cash, cash equivalents and restricted cash at beginning of the period | 30,674 | 30,975
Cash, cash equivalents and restricted cash at end of the period | 19,119 | 30,280
Cash and cash equivalents | 19,065 | 30,213
Restricted cash | 54 | 67
Total cash, cash equivalents and restricted cash | 19,119 | 30,280
Supplementary information on investing and financing activities not involving cash flows: |  |
Accretion of preferred stock | $ 0 | $ 149

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- Definition The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. + References No definition available. + Details
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- Definition Amount of unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
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