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BORROWING
 9 Months Ended
Sep. 30, 2024
Debt Disclosure [Abstract]  
BORROWING BORROWING
Solar Capital and Western Alliance Bank Loan Agreement

In May 2018, we entered into a loan and security agreement (as amended on October 9, 2020, March 1, 2021, May 5, 2021, and July 29, 2021) (2018 Loan Agreement) with Solar Capital Ltd. and Western Alliance Bank (collectively, the 2018 Lenders). The 2018 Loan Agreement provided for a loan facility for up to $50.0 million with a maturity date of November 1, 2022 (2018 Loan). As of the Closing Date for the 2022 Loan, as discussed below, we owed $25.0 million in principal payments from the 2018 Loan, which we repaid in full at that time.

As discussed in Note 9. Derivative Liabilities, in connection with entering into the 2018 Loan Agreement, we entered into an agreement pursuant to which we agreed to pay $1.5 million in cash upon the occurrence of certain conditions (2018 Exit Fee). Our obligations for the 2018 Exit Fee remained outstanding following the full repayment of the 2018 Loan in February 2022 until October 2023 when we received approval from the U.S. FDA for XPHOZAH to reduce serum phosphorus in adults with CKD on dialysis as add-on therapy in patients who have an inadequate response to phosphate binders or who are intolerant of any dose of phosphate binder therapy. This triggered our obligation to pay the 2018 Exit Fee to the 2018 Lenders and we subsequently paid the 2018 Exit Fee in October 2023.
SLR Investment Corp. Loan Agreement

On February 23, 2022 (Closing Date), we entered into a loan and security agreement (2022 Loan Agreement) with SLR Investment Corp. as collateral agent (Agent or SLR), and the lenders listed in the 2022 Loan Agreement (collectively, the 2022 Lenders). The 2022 Loan Agreement was subsequently amended in August 2022 (the First Amendment), February 2023 (the Second Amendment) and October 2023 (the Third Amendment). We concluded that the First Amendment, the Second Amendment and the Third Amendment were each modifications to the 2022 Loan Agreement.

The 2022 Loan Agreement, as amended by the First Amendment and the Second Amendment, provided for a senior secured loan facility, with $27.5 million (Term A Loan) funded on the Closing Date and an additional $22.5 million which was funded upon our election in October 2023 (Term B Loan, and together with the Term A Loan, the 2022 Original Loans). The 2022 Term A Loan funds were used to repay the 2018 Loan with the 2018 Lenders.

The Third Amendment, among other things, (1) provided us with the option to draw an additional $50.0 million of committed capital by March 15, 2024 (the Term C Loan) provided we have drawn the Term B Loan; and (2) provided us with the option to draw up to an additional $50.0 million of uncommitted capital by December 31, 2026, subject to approval by the Agent’s investment committee (the Term D Loan). In February 2024, we provided the Agent with notice of our decision to draw the Term C Loan to support the commercial launch of XPHOZAH and received the proceeds of the Term C Loan in March 2024.

As discussed in Note 15. Subsequent Events, on October 29, 2024, we entered into a Fourth Amendment (the Fourth Amendment) to the 2022 Loan Agreement by and between us and the 2022 Lenders. The Fourth Amendment, among other things, (1) provided for the immediate draw of the Term D Loan in a principal amount of $50.0 million on the closing date of the Fourth Amendment and (2) provides us with the option to draw an additional $50.0 million of committed capital by June 30, 2025 (the Term E Loan and together with the Term A, B, C and D Loans, the Five 2022 Loans).

Under the Fourth Amendment, the maturity date for the Five 2022 Loans is extended from March 1, 2027 to July 1, 2028 (the Maturity Date). The interest rate for each of the Term A Loan and the Term B Loan is 7.95% plus a SOFR value equal to 0.022% plus the 1-month CME Term SOFR reference rate as published by the CME Term SOFR Administrator on the CME Term SOFR Administrator’s Website, subject to a SOFR floor of one percent. The interest rate for the Term C Loan is 4.25% plus a SOFR value equal to 0.022% plus the 1-month CME Term SOFR reference rate as published by the CME Term SOFR Administrator on the CME Term SOFR Administrator’s Website, subject to a SOFR floor of 4.7%. The interest rate for each of the Term D Loan and the Term E Loan is 4.00% plus a SOFR value equal to 0.022% plus the 1-month CME Term SOFR reference rate as published by the CME Term SOFR Administrator on the CME Term SOFR Administrator's Website, subject to a SOFR floor of 4.7%.

In addition, pursuant to the Fourth Amendment, the period under which we are permitted to make interest-only payments on the Five 2022 Loans was extended to the Maturity Date.
We paid fees of $0.2 million, upon the closing of the Term A Loan, $0.1 million on the funding date of the Term B Loan, $0.3 million on the funding date of the Term C Loan and $0.3 million on the funding date of the Term D Loan in October 2024. In addition, we will be obligated to pay 0.5% of the aggregate original principal amount of the Term E Loan commitment, which shall be due on the earliest of (1) the funding of the Term E Loan, (2) June 30, 2025, and (3) the prepayment, refinancing, substitution or replacement of any of the Five 2022 Loans on or prior to the date immediately preceding June 30, 2025.

We are obligated to pay a final fee equal to 4.95% of the aggregate original principal amount of the Five 2022 Loans, to the extent such loans are funded, upon the earliest to occur of the maturity date, the acceleration of the Five 2022 Loans, and the prepayment, refinancing, substitution, or replacement of the Five 2022 Loans.

We may voluntarily prepay all amounts outstanding under the Five 2022 Loans, subject to a prepayment premium of (i) 3% of the outstanding principal amount of the Five 2022 Loans if prepaid prior to or on October 17, 2024, (ii) 2% of the outstanding principal amount of the Five 2022 Loans if prepaid after October 17, 2024 through and including October 17, 2025, or (iii) 1% of the outstanding principal amount of the Five 2022 Loans if prepaid after October 17, 2025 and prior to the maturity date. The Five 2022 Loans are secured by substantially all of our assets, except for our intellectual property and certain other customary exclusions. Additionally, as discussed in Note 9. Derivative Liabilities, in connection with the 2022 Original Loans, we entered into an agreement whereby we agreed to pay an exit fee in the amount of 2% of the 2022 Original Loans funded (2022 Exit Fee). We paid the 2022 Exit Fee to the Lender in October 2024.

The 2022 Loan Agreement, as amended, contains customary representations and warranties and customary affirmative and negative covenants, including, among others, requirements as to financial reporting and insurance and restrictions on our ability to dispose of our business or property, to change our line of business, to liquidate or dissolve, to enter into any change in control transaction, to merge or consolidate with any other entity or to acquire all or substantially all the capital stock or property of another entity, to incur additional indebtedness, to incur liens on our property, to pay any dividends or other distributions on capital stock other than dividends payable solely in capital stock or to redeem capital stock. We have agreed to not allow our cash, cash equivalents and available-for-sale investments to be less than the eighty percent (80%) of the outstanding balance of the Five 2022 Term Loans for any period in which our net revenue from the sale of any products, calculated on a trailing six (6) month basis and tested monthly, is less than sixty percent (60%) of the outstanding balance of the Five 2022 Loans.

In addition, the 2022 Loan Agreement, as amended, contains customary events of default that entitle the Agent to cause our indebtedness under the 2022 Loan Agreement to become immediately due and payable, and to exercise remedies against us and the collateral securing the Five 2022 Term Loans, including our cash. Under the 2022 Loan Agreement, an event of default will occur if, among other things, we fail to make payments under the 2022 Loan Agreement, we breach any of our covenants under the 2022 Loan Agreement, subject to specified cure periods with respect to certain breaches, certain Lenders determine that a material adverse change has occurred, we or our assets become subject to certain legal proceedings, such as bankruptcy proceedings, we are unable to pay our debts as they become due or we default on contracts with third parties which would permit the holder of indebtedness to accelerate the maturity of such indebtedness or that could have a material adverse change on us. Upon the occurrence and for the duration of an event of default, an additional default interest rate equal to 4% per annum will apply to all obligations owed under the 2022 Loan Agreement. We have classified the 2022 Original Loan balance as a non-current liability as of September 30, 2024 due to principal repayment on July 1, 2028. We have concluded that the provisions that could cause acceleration of the principal repayments are remote.

As of September 30, 2024, our future payment obligations related to the 2022 Loan, excluding interest payments and the 2022 final fee, were as follows (in thousands):

Total repayment obligations$104,950 
Less: Unamortized discount and debt issuance costs(944)
Less: Unaccreted value of final fee(3,299)
Long-term debt100,707 
Less: Current portion of long-term debt— 
Long-term debt, net of current portion$100,707