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v3.25.1

Condensed Consolidated Statements of Stockholders’ Equity (Unaudited) - USD ($) $ in Thousands | Total | Series F Preferred Stock | Stock options | Assumed conversion of ESPP | Preferred Stock | Preferred Stock Series F Preferred Stock | Common Stock | Common Stock Series F Preferred Stock | Additional Paid in Capital | Additional Paid in Capital Series F Preferred Stock | Additional Paid in Capital Stock options | Additional Paid in Capital Assumed conversion of ESPP | Accumulated Deficit | Accumulated Other Comprehensive Income
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2023 |  |  |  |  | 24,819 |  | 22,761,554 |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2023 | $ 15,777 |  |  |  | $ 0 |  | $ 228 |  | $ 520,576 |  |  |  | $ (505,162) | $ 135
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation expense |  |  | $ 2,895 | $ 50 |  |  |  |  |  |  | $ 2,895 | $ 50 |  |
Private placement -issuance of common shares, net of expenses (in shares) |  |  |  |  |  |  | 876,627 |  |  |  |  |  |  |
Private placement -issuance of common shares, net of expenses | 6,912 |  |  |  |  |  | $ 8 |  |  |  |  | 6,904 |  |
Issuance of common stock with the Employee Stock Purchase Plan (in shares) |  |  |  |  |  |  | 21,140 |  |  |  |  |  |  |
Issuance of common stock with the Employee Stock Purchase Plan | 74 |  |  |  |  |  |  |  | 74 |  |  |  |  |
Conversion - F-3 Preferred to Common (in shares) |  |  |  |  |  | (8,010) |  | 1,779,998 |  |  |  |  |  |
Conversion - F-3 Preferred to Common |  | $ 1 |  |  |  |  |  | $ 18 |  | $ (17) |  |  |  |
Net income (loss) | (11,111) |  |  |  |  |  |  |  |  |  |  |  | (11,111) |
Unrealized gain on investments | 8 |  |  |  |  |  |  |  |  |  |  |  |  | 8
Foreign currency translation adjustments | 14 |  |  |  |  |  |  |  |  |  |  |  |  | 14
Ending balance (in shares) at Mar. 31, 2024 |  |  |  |  | 16,809 |  | 25,439,319 |  |  |  |  |  |  |
Ending balance at Mar. 31, 2024 | 14,620 |  |  |  | $ 0 |  | $ 254 |  | 530,482 |  |  |  | (516,273) | 157
Beginning balance (in shares) at Dec. 31, 2024 |  |  |  |  | 14,192 |  | 33,061,002 |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2024 | 68,746 |  |  |  | $ 0 |  | $ 331 |  | 599,881 |  |  |  | (531,548) | 82
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation expense |  |  | $ 6,813 | $ 50 |  |  |  |  |  |  | $ 6,813 | $ 50 |  |
Issuance of common stock with the Employee Stock Purchase Plan (in shares) |  |  |  |  |  |  | 35,513 |  |  |  |  |  |  |
Issuance of common stock with the Employee Stock Purchase Plan | $ 238 |  |  |  |  |  |  |  | 238 |  |  |  |  |
Warrant Exercise - Series F (in shares) |  |  |  |  |  | 0 |  | 238,500 |  |  |  |  |  |
Warrant Exercise - Series F |  | $ 2,385 |  |  |  |  |  | $ 2 |  | $ 2,383 |  |  |  |
Stock Option Exercise (in shares) | 101,597 |  |  |  |  |  | 101,597 |  |  |  |  |  |  |
Stock Option Exercise | $ 630 |  |  |  |  |  | $ 1 |  | 629 |  |  |  |  |
Net income (loss) | 1,069 |  |  |  |  |  |  |  |  |  |  |  | 1,069 |
Unrealized gain on investments | 239 |  |  |  |  |  |  |  |  |  |  |  |  | 239
Foreign currency translation adjustments | 60 |  |  |  |  |  |  |  |  |  |  |  |  | 60
Ending balance (in shares) at Mar. 31, 2025 |  |  |  |  | 14,192 |  | 33,436,612 |  |  |  |  |  |  |
Ending balance at Mar. 31, 2025 | $ 80,230 |  |  |  | $ 0 |  | $ 334 |  | $ 609,994 |  |  |  | $ (530,479) | $ 381

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