Convertible Debt	12 Months Ended
Dec. 31, 2023
Convertible Debt
Convertible Debt	7. Convertible Debt On January 10, 2023, the Company received the Convertible Loan in the aggregated amount of $30.0 million from Innoviva pursuant to the Convertible Credit Agreement. The Convertible Loan bears interest at a rate of 8.0% per annum and was scheduled to mature on January 10, 2024. The Convertible Credit Agreement was amended on July 10, 2023, in connection with the Credit Agreement with Innoviva to, among other changes, extend the maturity of the Convertible Loan to January 10, 2025. The Convertible Loan principal and accrued interest are payable at maturity. Repayment of the Convertible Loan is guaranteed by the Company’s domestic subsidiaries and foreign material subsidiaries, and the Convertible Loan is secured by substantially all of the assets of the Company and the subsidiary guarantors. The Convertible Credit Agreement provides that if there is a financing from new investors of at least $30.0 million (a “Qualified Financing”), the outstanding principal amount of and all accrued and unpaid interest on the Convertible Loan shall be converted into shares of the Company’s Common Stock, at a price per share equal to a 15.0% discount to the lowest price per share for Common Stock paid by investors in such Qualified Financing. The Convertible Credit Agreement also required the Company to file a registration statement for the resale of all securities issued to the lender in connection with any conversion under the Convertible Credit Agreement, which the Company originally filed on February 13, 2023 and which was declared effective by the SEC on April 6, 2023. The Convertible Credit Agreement also confers upon the lender the option to convert any outstanding Convertible Loan amount, including all accrued and unpaid interest thereon, at the lender’s option, into shares of Common Stock at a price per share equal to the greater of book value or market value per share of Common Stock on the date immediately preceding the effective date of the Convertible Credit Agreement, which was market value of $1.52 (as may be appropriately adjusted for any stock split, combination or similar act). The Company evaluated authoritative guidance for accounting for the Convertible Loan and concluded that the Convertible Loan should be accounted for at fair value under ASC 480, Distinguish Liabilities from Equity, due to the fact that the Convertible Loan will predominately be settled with the Company’s Common Stock. Consequently, the Company recorded the Convertible Loan in its entirety at fair value on its consolidated balance sheet, with changes in fair value recorded as other income (expenses) in the consolidated statements of operations during each reporting period. On July 10, 2023, in connection with the Credit Agreement with Innoviva, as discussed below, the Company amended the terms of the Convertible Credit Agreement, to, among other changes, extend the maturity of the Convertible Loan to January 10, 2025. The Company concluded that the amendment was an extinguishment for accounting purposes. The Company recognized a $1.8 million gain as the change in fair value of the Convertible Loan before the extinguishment date, July 10, 2023. The Company estimated fair value of the combined transaction, the Loan and the Convertible Loan, before and after modification and calculated an extinguishment loss of $3.9 million, which was recognized as other income (expense) in the consolidated statement of operations for the year ended December 31, 2023. The Company recognized a $23.6 million loss as the change in fair value of the Convertible Loan from July 10, 2023 to December 31, 2023.

Convertible Debt

12 Months Ended

Dec. 31, 2023

7. Convertible Debt

On January 10, 2023, the Company received the Convertible Loan in the aggregated amount of $30.0 million from Innoviva pursuant to the Convertible Credit Agreement. The Convertible Loan bears interest at a rate of 8.0% per annum and was scheduled to mature on January 10, 2024. The Convertible Credit Agreement was amended on July 10, 2023, in connection with the Credit Agreement with Innoviva to, among other changes, extend the maturity of the Convertible Loan to January 10, 2025. The Convertible Loan principal and accrued interest are payable at maturity. Repayment of the Convertible Loan is guaranteed by the Company’s domestic subsidiaries and foreign material subsidiaries, and the Convertible Loan is secured by substantially all of the assets of the Company and the subsidiary guarantors.

The Convertible Credit Agreement provides that if there is a financing from new investors of at least $30.0 million (a “Qualified Financing”), the outstanding principal amount of and all accrued and unpaid interest on the Convertible

Loan shall be converted into shares of the Company’s Common Stock, at a price per share equal to a 15.0% discount to the lowest price per share for Common Stock paid by investors in such Qualified Financing. The Convertible Credit Agreement also required the Company to file a registration statement for the resale of all securities issued to the lender in connection with any conversion under the Convertible Credit Agreement, which the Company originally filed on February 13, 2023 and which was declared effective by the SEC on April 6, 2023. The Convertible Credit Agreement also confers upon the lender the option to convert any outstanding Convertible Loan amount, including all accrued and unpaid interest thereon, at the lender’s option, into shares of Common Stock at a price per share equal to the greater of book value or market value per share of Common Stock on the date immediately preceding the effective date of the Convertible Credit Agreement, which was market value of $1.52 (as may be appropriately adjusted for any stock split, combination or similar act).

The Company evaluated authoritative guidance for accounting for the Convertible Loan and concluded that the Convertible Loan should be accounted for at fair value under ASC 480, Distinguish Liabilities from Equity, due to the fact that the Convertible Loan will predominately be settled with the Company’s Common Stock. Consequently, the Company recorded the Convertible Loan in its entirety at fair value on its consolidated balance sheet, with changes in fair value recorded as other income (expenses) in the consolidated statements of operations during each reporting period.

On July 10, 2023, in connection with the Credit Agreement with Innoviva, as discussed below, the Company amended the terms of the Convertible Credit Agreement, to, among other changes, extend the maturity of the Convertible Loan to January 10, 2025. The Company concluded that the amendment was an extinguishment for accounting purposes. The Company recognized a $1.8 million gain as the change in fair value of the Convertible Loan before the extinguishment date, July 10, 2023. The Company estimated fair value of the combined transaction, the Loan and the Convertible Loan, before and after modification and calculated an extinguishment loss of $3.9 million, which was recognized as other income (expense) in the consolidated statement of operations for the year ended December 31, 2023. The Company recognized a $23.6 million loss as the change in fair value of the Convertible Loan from July 10, 2023 to December 31, 2023.