XOMA Royalty Reports Third Quarter and Year to Date 2025 Financial Results and Highlights Recent Business Achievements

Business development: Secures royalty economic interests in two early stage partnered assets through XOMA Royalty’s announced expected acquisition of LAVA Therapeutics.

Company acquisitions: •Completed XOMA Royalty’s acquisitions of Turnstone Biologics and HilleVax; • announced acquisitions of LAVA Therapeutics and Mural Oncology; • acted as structuring agent for XenoTherapeutics’ acquisition of ESSA Pharma.

Key Pipeline advancements: • Zevra Therapeutics submitted a Marketing Authorization Application (MAA) with the European Medicines Agency (EMA) seeking marketing approval for arimoclomol as a treatment for Niemann-Pick Type C; • Rezolute Bio reconfirmed its expectations to announce topline data in December from its Phase 3 ersodetug trial in patients with congenital hyperinsulinism (HI) and announced alignment with FDA on streamlined design for ongoing Phase 3 trial of ersodetug in tumor HI; •Gossamer Bio expects topline results from PROSERA, its Phase 3 trial of seralutunib in pulmonary atrial hypertension (PAH), in February 2026.

Cash receipts: In the first nine months of 2025, XOMA Royalty received $43.9 million in royalties and milestones from its partners, including $14.3 million from royalties during the third quarter.

EMERYVILLE, Calif., Nov. 12, 2025 (GLOBE NEWSWIRE) -- XOMA Royalty Corporation (NASDAQ: XOMA), the biotech royalty aggregator, reported its 2025 third quarter and year to date financial results and highlighted recent actions that have the potential to deliver additional shareholder value.

“We continue to execute on innovative ways to increase optionality within our portfolio while maintaining a healthy cash balance and limiting dilution to our shareholders,” stated Owen Hughes, Chief Executive Officer of XOMA Royalty. “Growing royalty receipts reflect solid commercial execution on the part of our partners. We look forward to several clinical readouts over the coming months and quarters that, if positive, can meaningfully shape our business trajectory.”

Royalty and Milestone Acquisitions

Company Acquisitions

Pipeline Partner Updates through November 10, 2025

Anticipated Partner Events of Note through Mid-2026

1 https://investors.xoma.com/news-events/press-releases/detail/482/mural-oncology-announces-entry-into-agreement-to-be

2 http://ml.globenewswire.com/Resource/Download/538d82a8-0fae-4d41-8687-71845b9b67c2

3 https://ir.rezolutebio.com/news/detail/361/rezolute-announces-alignment-with-fda-on-streamlined-design-for-ongoing-phase-3-trial-of-ersodetug-in-tumor-hyperinsulinism

4 https://investors.zevra.com/news-releases/news-release-details/zevra-therapeutics-submits-marketing-authorization-application

5 https://ir.gossamerbio.com/news-releases/news-release-details/gossamer-bio-announces-third-quarter-2025-financial-results-and

6 https://ir.darebioscience.com/news-releases/news-release-details/positive-interim-phase-3-results-highlight-potential-ovaprener

7 https://ir.rezolutebio.com/news/detail/366/rezolute-reports-first-quarter-fiscal-2026-financial-results-and-provides-business-update

8 https://ir.darebioscience.com/news-releases/news-release-details/dare-bioscience-reports-second-quarter-2025-financial-results

9 https://ir.darebioscience.com/news-releases/news-release-details/dare-bioscience-announces-phase-3-plans-sildenafil-cream-36

Third Quarter and Year to Date 2025 Financial Results

Tom Burns, Chief Financial Officer of XOMA Royalty, commented, “In the first nine months of 2025, we have received $43.9 million in cash from partners, of which $30.3 million were royalty payments related to commercial sales and $13.6 million in milestone payments and fees. In the third quarter, we received $14.3 million in cash from our partners’ commercial sales. With well-executed commercialization efforts by our partners and the emergence of new commercial opportunities from within our portfolio, XOMA Royalty has the potential to become a self-sustaining entity from royalties alone over the near term.”

Income and Revenue: Income and revenue for the three and nine months ended September 30, 2025, were $9.4 million and $38.4 million, respectively, as compared with $7.2 million and $19.8 million for the corresponding periods of 2024. The increase in both periods presented was primarily driven by increased income related to VABYSMO and OJEMDA.

Research and Development (R&D) Expenses: R&D expenses for the three and nine months ended September 30, 2025, were $69 thousand and $1.4 million, respectively, compared with $0.8 million and $2.0 million for each of the corresponding periods of 2024. R&D expenses in the first quarter of 2025 and the three- and nine-month periods of 2024 were related to the clinical trial costs incurred subsequent to XOMA Royalty’s acquisition of Kinnate in April 2024 related to KIN-3248 and the associated wind-down activities.

General and Administrative (G&A) Expenses: G&A expenses for the three and nine months ended September 30, 2025, were $9.7 million and $25.7 million, respectively, as compared with $8.0 million and $27.5 million for the corresponding periods of 2024. The increase of $1.7 million for the three months ended September 30, 2025, as compared to the same period in 2024, was primarily due to an increase in business development and deal-related costs, partially offset by a decrease in stock-based compensation expense. For the nine months ended September 30, 2025, the decrease of $1.8 million, as compared to the same period in 2024, was primarily due to costs related to exit packages for Kinnate senior leadership in the second quarter of 2024 and a decrease in stock-based compensation expense, partially offset by an increase in business development and deal-related costs.

XOMA Royalty’s G&A expenses included non-cash stock-based compensation expenses during the three and nine months ended September 30, 2025, of $1.8 million and $5.4 million, respectively, as compared to $2.6 million and $8.1 million for the corresponding periods of 2024. The 2024 periods reflect non-cash stock-based compensation related to the appointment of Mr. Hughes to full-time Chief Executive Officer and issuance of performance stock units.

Credit Losses on Purchased Receivables: During the nine months ended September 30, 2024, XOMA Royalty recorded one-time, non-cash credit losses on purchased receivables associated with the Aronora and Agenus assets. To date, there have been no credit losses in 2025.

Amortization of Intangible Assets: Amortization of intangible assets relates to the IP acquired in the Company’s acquisitions of Pulmokine in November 2024 and the mezagitamab economics from the BioInvent transaction in May 2025. Amortization of non-cash intangible assets were $0.9 million and $2.1 million for the three and nine months ended September 30, 2025.

Gains on Acquisitions: In the third quarter of 2025, XOMA Royalty recorded gains on acquisitions of $17.9 million for HilleVax and $1.8 million for Turnstone.

Interest Expense: For the three and nine months ended September 30, 2025, interest expense was $3.3 million and $10.0 million, respectively, as compared with $3.5 million and $10.4 million for the corresponding periods of 2024. Interest expense relates to the Blue Owl Loan established in December 2023.

Other Income, net: For the three and nine months ended September 30, 2025, other income, net was $0.7 million and $8.5 million, respectively, as compared with $1.9 million and $5.9 million for the corresponding periods of 2024.

Net Income: XOMA Royalty reported net income of $14.1 million and $25.6 million for the three and nine months ended September 30, 2025, as compared to net losses of $17.2 million and $9.9 million in the corresponding periods of 2024.

Cash Position: On September 30, 2025, XOMA Royalty had cash and cash equivalents of $130.6 million, including $85.4 million in restricted cash. The restricted cash balance included $43.3 million related to the assumed HilleVax lease, $39.9 million reserved to fund the Mural acquisition, and $2.2 million related to the Blue Owl Loan. Cash and cash equivalents of $106.4 million as of December 31, 2024, included $4.8 million in restricted cash related to the Blue Owl Loan.

In the third quarter of 2025, XOMA Royalty received $14.3 million in cash receipts from royalties and commercial payments and paid $1.4 million in dividends on the XOMA Royalty Perpetual Preferred stocks. In the first nine months of 2025, XOMA Royalty received $43.9 million in cash receipts, including $30.3 million in royalties and commercial payments and $13.6 million in milestone payments and fees. During the first nine months of 2025, XOMA Royalty deployed $25.0 million to acquire additional assets for its royalty and milestone portfolio, repurchased approximately 108,510 shares of its common stock for a cost of $2.4 million, and paid $4.1 million in dividends on the XOMA Royalty Perpetual Preferred stocks.

About XOMA Royalty Corporation

XOMA Royalty is a biotechnology royalty aggregator playing a distinctive role in helping biotech companies achieve their goal of improving human health. XOMA Royalty acquires the potential future economics associated with pre-commercial and commercial therapeutic candidates that have been licensed to pharmaceutical or biotechnology companies. When XOMA Royalty acquires the future economics, the seller receives non-dilutive, non-recourse funding they can use to advance their internal drug candidate(s) or for general corporate purposes. The Company has an extensive and growing portfolio of assets (asset defined as the right to receive potential future economics associated with the advancement of an underlying therapeutic candidate). For more information about the Company and its portfolio, please visit www.xoma.com or follow XOMA Royalty Corporation on LinkedIn.

Forward-Looking Statements/Explanatory Notes

Certain statements contained in this press release are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, including statements regarding the timing and amount of potential commercial payments to XOMA Royalty and other developments related to VABYSMO® (faricimab-svoa), OJEMDA™ (tovorafenib), MIPLYFFA™ (arimoclomol), XACIATO™ (clindamycin phosphate) vaginal gel 2%, IXINITY® [coagulation factor IX (recombinant)], DSUVIA® (sufentanil sublingual tablet), and Sildenafil Cream, 3.6%; the potential occurrences of the events listed under “Anticipated 2025 Events of Note”; the anticipated timings of regulatory filings and approvals related to assets in XOMA Royalty’s portfolio; and the potential of XOMA Royalty’s portfolio of partnered programs and licensed technologies generating substantial milestone and royalty proceeds over time. In some cases, you can identify such forward-looking statements by terminology such as “anticipate,” “intend,” “believe,” “estimate,” “plan,” “seek,” “project,” “expect,” “may,” “will”, “would,” “could” or “should,” the negative of these terms or similar expressions. These forward-looking statements are not a guarantee of XOMA Royalty’s performance, and you should not place undue reliance on such statements. These statements are based on assumptions that may not prove accurate, and actual results could differ materially from those anticipated due to certain risks inherent in the biotechnology industry, including those related to the fact that our product candidates subject to out-license agreements are still being developed, and our licensees may require substantial funds to continue development which may not be available; we do not know whether there will be, or will continue to be, a viable market for the products in which we have an ownership or royalty interest; and if the therapeutic product candidates to which we have a royalty interest do not receive regulatory approval, our third-party licensees will not be able to market them. Other potential risks to XOMA Royalty meeting these expectations are described in more detail in XOMA Royalty's most recent filing on Form 10-Q and in other filings with the Securities and Exchange Commission. Consider such risks carefully when considering XOMA Royalty's prospects. Any forward-looking statement in this press release represents XOMA Royalty's beliefs and assumptions only as of the date of this press release and should not be relied upon as representing its views as of any subsequent date. XOMA Royalty disclaims any obligation to update any forward-looking statement, except as required by applicable law.

EXPLANATORY NOTE: Any references to “portfolio” in this press release refer strictly to milestone and/or royalty rights associated with a basket of drug products in development. Any references to “assets” in this press release refer strictly to milestone and/or royalty rights associated with individual drug products in development.

As of the date of this press release, the commercial assets in XOMA Royalty’s milestone and royalty portfolio are VABYSMO® (faricimab-svoa), OJEMDA™ (tovorafenib), MIPLYFFA™ (arimoclomol), XACIATO™ (clindamycin phosphate) vaginal gel 2%, IXINITY® [coagulation factor IX (recombinant)], and DSUVIA® (sufentanil sublingual tablet). All other assets in the milestone and royalty portfolio are investigational compounds. Efficacy and safety have not been established. There is no guarantee that any of the investigational compounds will become commercially available.