v3.23.1

Note 15 - Common Stock Reserved for Issuance | 12 Months Ended
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Dec. 31, 2022
Notes to Financial Statements |
Common Stock Reserved For Issuance [Text Block] | 15. COMMON STOCK RESERVED FOR ISSUANCE The Company is required to reserve and keep available out of its authorized but unissued shares of common stock a number of shares sufficient to affect the exercise of all options granted and available for grant under the incentive plans and warrants to purchase common stock.
|  | December 31, 2022 |  |  | December 31, 2021 |
Outstanding common stock warrants |  |  | 15,928,867 |  |  |  | 15,928,867 |
Outstanding stock options and RSUs |  |  | 13,130,144 |  |  |  | 5,977,179 |
Preferred shares |  |  | 31,850,000 |  |  |  | 3,790,755 |
Shares reserved for conversion of future non-voting preferred share issuance |  |  | 1,209,245 |  |  |  | 1,209,245 |
Shares reserved for conversion of future voting preferred share issuance |  |  | 9,150,000 |  |  |  | — |
Shares reserved for future option grants and RSUs |  |  | 376,201 |  |  |  | 589,064 |
Shares reserved for Lincoln Park |  |  | 15,814,471 |  |  |  | 5,222,867 |
Shares reserved for Madryn Noteholders |  |  | 8,215,706 |  |  |  | 8,213,880 |
Total common stock reserved for issuance |  |  | 95,674,634 |  |  |  | 40,931,857 |

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- Definition Common Stock reserved for issuance represents authorized but unissued shares of Common Stock, sufficient to affect the conversion of all outstanding shares of convertible preferred stock, plus options granted and available for grant under the incentive plans. + References No definition available. + Details
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