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Long-Term Debt and Other Financings | 12 Months Ended
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Dec. 31, 2018
Debt Disclosure [Abstract] |
Long-Term Debt and Other Financings | 9. Long-Term Debt and Other Financings Silicon Valley Bank Loan Agreement On May 7, 2018 (the “Effective Date”), the Company executed a Loan and Security Agreement (the “Loan Agreement”) with SVB. Under the Loan Agreement, upon the Company’s request, SVB may make advances (each, a “Term Loan Advance”) available to the Company up to $20.0 million (the “Term Loan”). The available fund may be increased up to $40.0 million upon the Company’s request and approval by the bank subject to the Company’s compliance with certain internal and credit requirements. The Company may borrow advances under the Term Loan from the Effective Date until the earlier of March 31, 2019 or an event of default (the “Draw Period”). Unless an event of default occurs, the period to draw may be extended to March 31, 2020, if the Company receives $20.0 million in gross cash proceeds from milestone/licensing payments by March 31, 2019. In the event of a default related to the Note Agreement with Novartis, SVB’s obligation to make any credit extensions to the Company under the Loan Agreement will immediately terminate. The interest rate will be calculated at a rate equal to the greater of (i) 4.75%, and (ii) 0.25% plus the prime rate as reported from time to time in The Wall Street Journal. Payments under the Loan Agreement are interest only until the first anniversary of the funding date of each Term Loan Advance. The interest-only period will be followed by equal monthly payments of principal and interest over 24 months. Each Term Loan Advance will mature at the earlier of (i) the 23 months following the applicable term loan amortization date for each such Term Loan Advance (ii) March 1, 2023, or (iii) 30 days prior to the earliest maturity of any portion of the Company’s loan with Novartis (the “Loan Maturity Date”). After repayment, no Term Loan Advance (or any portion thereof) may be reborrowed. The entire principal balance, including a final payment fee equal to 8.5% of the principal, will be due and payable on the Loan Maturity Date. If the Company prepays the Term Loan Advance prior to the Loan Maturity Date, it will pay SVB a prepayment premium, based on a prepayment fee equal to 3.00% of the amount prepaid, if the prepayment occurs on or before the first anniversary of the Effective Date, 2.00% of the amount prepaid, if the prepayment occurs after the first anniversary of the Effective Date but prior to the second anniversary of the Effective Date, and 1.00% of the amount prepaid if the prepayment occurs after the second anniversary of the Effective Date. In the event of a default, a default interest rate of an additional 4% may be applied to the outstanding payments due to SVB, and SVB may declare all outstanding obligations immediately due and payable and take such other actions as set forth in the Loan Agreement. The Company’s obligations under the Loan Agreement are secured by a security interest in substantially all of its assets, other than its intellectual property. The Loan Agreement includes customary affirmative and restrictive covenants, but does not include any financial maintenance covenants, and also includes standard events of default, including payment defaults. In connection with the Loan Agreement, the Company issued a warrant to SVB which is exercisable in whole or in part for up to an aggregate of 6,332 shares of common stock with an exercise price of $23.69 per share (the “Warrant”). The Warrant may be exercised on a cashless basis and is exercisable within 10 years from the date of issuance or upon the consummation of certain acquisitions of the Company. The fair value of the Warrant issued to SVB was determined using the Black-Scholes Model and was estimated to be $0.1 million. As of December 31, 2018, the Warrant is outstanding. In addition, the Company incurred debt issuance costs of $0.2 million in connection with the Loan Agreement. As of December 31, 2018, the Company has borrowed advances of $7.5 million under the Loan Agreement in connection with the Agenus royalty purchase agreement (see Note 5). As of December 31, 2018, the outstanding balance under the Loan Agreement was $7.3 million. During the year ended December 31, 2018, the first Term Loan Advance was drawn, and the entire unamortized amount of deferred charges of $0.3 million was reclassified as a discount against the debt and will be amortized to interest expense over the term of the Term Loan Advance using the effective interest method. The Company recorded $0.1 million of non-cash interest expense resulting from the amortization of the discount and accretion of the final payment for the year ended December 31, 2018. Novartis Note In May 2005, the Company executed a secured note agreement (the “Note Agreement”) with Novartis, which was due and payable in full in June 2015. Under the Note Agreement, the Company borrowed semi-annually to fund up to 75% of the Company’s research and development and commercialization costs under its collaboration arrangement with Novartis, not to exceed $50.0 million in aggregate principal amount. Interest on the principal amount of the loan accrued at six-month LIBOR plus 2%, which was equal to 4.87% at December 31, 2018 is payable semi-annually in June and December of each year. Additionally, the interest rate resets in June and December of each year. At the Company’s election, the semi-annual interest payments could be added to the outstanding principal amount, in lieu of a cash payment, as long as the aggregate principal amount did not exceed $50.0 million. The Company made this election for all interest payments. Loans under the Note Agreement were secured by the Company’s interest in its collaboration with Novartis, including any payments owed to it thereunder. On September 30, 2015, concurrent with the execution of a license agreement with Novartis International as discussed in Note 4, XOMA and NIBR, who assumed the rights to the note from Novartis Vaccines Diagnostics, Inc. executed an amendment to the Note Agreement (the “Secured Note Amendment”) under which the parties extended the maturity date of the note from September 30, 2015 to September 30, 2020, and eliminated the mandatory prepayment previously required to be made with certain proceeds of pre-tax profits and royalties. In addition, upon achievement of a specified development and regulatory milestone, the then-outstanding principal amount of the note will be reduced by $7.3 million rather than the Company receiving such amount as a cash payment. On September 22, 2017, in connection with the XOMA-052 License Agreement with Novartis, the Company and NIBR executed an amendment to the Secured Note Amendment under which the parties further extended the maturity date of the Secured Note Amendment from September 30, 2020 to September 30, 2022. As of December 31, 2018 and December 31, 2017, the outstanding principal balance under the Secured Note Amendment was $15.2 million and $14.6 million, respectively, and was included in long-term debt in the accompanying consolidated balance sheets. Servier Loan Agreement In December 2010, in connection with the collaboration agreement entered into with Servier, the Company executed a loan agreement with Servier (the “Servier Loan Agreement”), which provided for an advance of €15.0 million (or $19.5 million at the exchange rate on the date of funding). The loan was secured by an interest in XOMA’s intellectual property rights to VPM087and its use in indications worldwide, excluding certain rights in the U.S. and Japan. Interest was calculated at a floating rate based on a Euro Inter-Bank Offered Rate (“EURIBOR”) and subjected to a cap. The Company and Servier executed multiple amendments to the Servier Loan Agreement in 2015 and 2017 primarily to revise the timing of the payments and the maturity date of the loan. On August 25, 2017, NIBR settled the Servier Loan in cash by paying directly to Servier $14.3 million which represented the outstanding balance of the loan based on a euro to dollar exchange rate of 1.1932. The funds that NIBR paid directly to Servier were a portion of the upfront payment due to XOMA under the XOMA-052 License Agreement (see Note 4). As a result of the debt being fully paid, the intellectual property securing the Servier Loan Agreement was released. A loss on extinguishment of $0.1 million from the payoff of the loan was recognized in the consolidated statement of operations and comprehensive income during the year ended December 31, 2017. Hercules Term Loan On February 27, 2015, the Company entered into a loan and security agreement with Hercules Technology Growth Capital, Inc. (the “Hercules Term Loan”). On March 21, 2017, the Hercules Term Loan was paid in full and the Company was not required to pay the 1% prepayment charge due pursuant to the terms of the loan. A loss on extinguishment of $0.5 million from the payoff of the Hercules Term Loan was recognized in the consolidated statement of operations and comprehensive income during the year ended December 31, 2017. In connection with the Hercules Term Loan, the Company issued unregistered warrants that entitle Hercules to purchase up to an aggregate of 9,063 unregistered shares of XOMA common stock at an exercise price equal to $66.20 per share. These warrants were exercisable immediately and have a five-year term expiring in February 2020. As of December 31, 2018, all of these warrants were outstanding. Interest Expense Amortization of debt issuance costs and discounts are included in interest expense. Interest expense in the consolidated statements of operations and comprehensive (loss) income for the years ended December 31, 2018 and 2017, relates to the following debt instruments (in thousands):
| Year Ended December 31, |
| 2018 |  |  | 2017 |
Novartis note | $ | 627 |  |  | $ | 490 |
SVB loan |  | 258 |  |  |  | — |
Servier loan |  | — |  |  |  | 431 |
Hercules loan |  | — |  |  |  | 311 |
Other |  | 37 |  |  |  | 6 |
Total interest expense | $ | 922 |  |  | $ | 1,238 |

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