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Note 9 - Convertible Notes | 9 Months Ended
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Sep. 30, 2025
Notes to Financial Statements |
Debt Disclosure [Text Block] | NOTE 9. CONVERTIBLE NOTES Unsecured Convertible Notes On March 24, 2024, in connection with completing certain required conditions to close the DERMAdoctor Divestiture, the Company and the holders of the Secured Convertible Notes (as defined below) entered into a First Amendment (the “First Amendment”) to the Company’s Security Agreement, dated April 27, 2023 (the “Security Agreement”), to remove all of the DERMAdoctor membership units and any assets of DERMAdoctor as collateral for the Company’s obligations pursuant to the Secured Convertible Notes and for DERMAdoctor to be removed as a party to the Security Agreement, and a Consent and Release (the “Subsidiary Guarantee Consent”), to terminate the Subsidiary Guarantee, dated April 7, 2023 (the “Subsidiary Guarantee”) (collectively, the “2024 Subsidiary Guarantee Termination”). The Company issued $525 thousand aggregate principal amount of unsecured convertible notes (the “Unsecured Convertible Notes”) in conjunction with the 2024 Subsidiary Guarantee Termination. The 2024 Subsidiary Guarantee Termination was executed with certain holders of the Secured Convertible Notes in order to close the DERMAdoctor Divestiture (see Note 16, “DERMAdoctor Divestiture”). The Unsecured Convertible Notes are due March 25, 2026 and bear no stated interest. The Unsecured Convertible Notes may be converted or redeemed for a conversion price equal to $4.90 per share at any time at the election of the holder up to the amount of outstanding principal at the time of conversion subject to certain limitations such as beneficial ownership limitations. As of September 30, 2025, the Unsecured Convertible Notes were convertible for up to 107,146 shares of common stock. Upon issuance in March 2024, the lender’s conversion option under the Unsecured Convertible Notes represented an embedded call option requiring bifurcation as an embedded derivative liability because the common stock underlying the option required stockholder approval before the option could be exercised. The fair value of the embedded derivative was determined to be $159 thousand as of March 31, 2024 in accordance with a Black Scholes valuation model. See also Note 3, “Fair Value Measurements,” subheading “Black Scholes Valuation Models and Assumptions.” Upon stockholder approval on May 28, 2024, the embedded call option no longer required liability treatment and was reclassified to equity. The fair value of the embedded derivative liability was determined to be $242 thousand as of May 28, 2024. The change of $83 thousand in fair value between March 31, 2024 and May 28, 2024 was recorded as a non-cash loss on change in fair value of embedded derivative liability in the unaudited condensed consolidated statements of operations. See also Note 3, “Fair Value Measurements,” subheading “Black Scholes Valuation Models and Assumptions.” The discount to the note recorded for the embedded derivative liability upon issuance and debt issuance costs are being amortized to interest expense using the effective interest rate method over the term of the Unsecured Convertible Notes, assuming that the Unsecured Convertible Notes will be redeemed for cash of $525 thousand at time of maturity as of March 25, 2026. The effective interest rate on the Unsecured Convertible Notes is 144%. During the three months ended September 30, 2025 and 2024, interest expense recognized, including amortization of the issuance costs and debt discount, was $77 thousand and $20 thousand, respectively, which was included in “Other expense, net” in the unaudited condensed consolidated statements of operations. During the nine months ended September 30, 2025 and 2024, interest expense recognized, including amortization of the issuance costs and debt discount, was $170 thousand and $35 thousand, respectively, which was included in “Other expense, net” in the unaudited condensed consolidated statements of operations. Secured Convertible Notes In May 2023, the Company issued $3.3 million aggregate principal amount Original Issue Discount Senior Secured Convertible Debentures (the “Secured Convertible Notes”) in conjunction with a May 2023 private placement (the “2023 Private Placement”). The Secured Convertible Notes were issued with a $300 thousand original issue discount. Beginning June 1, 2023, the Company was required to start making a monthly redemption of 1/18th of the original principal amount of the Secured Convertible Notes. Each monthly redemption reduced the outstanding principle of the Secured Convertible Note by $183 thousand. The Secured Convertible Notes also provided for a redemption equal to up to 20% of the gross proceeds received by the Company from any financing completed while the Secured Convertible Notes were outstanding. In connection with the 2024 Warrant Reprice Transaction (see Note 11, “Stockholders’ Equity (Deficit)”), the Company made such a payment totaling $45 thousand in cash against the Secured Convertible Notes. In connection with the 2024 Public Offering (see Note 11, “Stockholders’ Equity (Deficit)”), the Company repaid the remaining balance of the Secured Convertible Notes with a payment totaling $433 thousand in cash. Upon full repayment, the Company was released from any further obligations under the Secured Convertible Notes with the lenders. The discounts and debt issuance costs were amortized to interest expense using the effective interest rate method over the term of the Secured Convertible Notes. The effective interest rate on the Secured Convertible Notes was 173%. During the quarter ended March 31, 2024, interest expense recognized, including amortization of the issuance costs and debt discount, was $0.4 million, which was included in other expense, net in the condensed consolidated statements of operations.

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