XBiotech Inc. reported a net loss of $45.5 million for the fiscal year ending December 31, 2025, compared to a net loss of $38.5 million in the previous year. The company's total operating expenses increased to $55.7 million, up from $42.5 million in 2024, primarily driven by a significant rise in research and development costs, which reached $47.4 million, a 26% increase from $37.8 million in the prior year. This increase was largely attributed to higher salaries and related expenses, including a severance payment of $17.3 million to former CEO John Simard, who retired in December 2025.
In terms of financial performance, XBiotech's cash and cash equivalents decreased to $125.6 million at the end of 2025, down from $172.7 million in 2024. The company has not generated any revenue from product sales, relying instead on past transactions, including a $750 million sale of its True Human™ antibody, Bermekimab, in 2019, which included potential milestone payments of up to $600 million. However, as of December 31, 2025, no milestone payments had been earned. The company anticipates continued operating losses as it advances its drug candidates through clinical trials.
Strategically, XBiotech has focused on developing its pipeline of True Human™ monoclonal antibodies, particularly those targeting interleukin-1 alpha (IL-1a), which is implicated in various diseases. The company has initiated clinical studies for its anti-IL-1a candidates in oncology and rheumatology, while also exploring therapies for infectious diseases. In August 2023, XBiotech launched a clinical program for rheumatoid arthritis, enrolling 233 subjects, although the study faced enrollment irregularities that may affect data interpretation.
Operationally, XBiotech's workforce remained stable at 85 employees as of December 31, 2025. The company has expanded its research and development facilities in Austin, Texas, to support its growing pipeline. Despite these advancements, XBiotech faces significant challenges, including the need for regulatory approvals and the successful commercialization of its product candidates. The company has indicated that it may require additional funding to support its ongoing operations and development activities, as it does not expect to generate revenue in the near term.
Looking ahead, XBiotech's management remains focused on advancing its clinical programs and achieving regulatory milestones. However, the company acknowledges the inherent risks associated with drug development, including the potential for clinical trial setbacks and the uncertainty of market acceptance for its therapies. As such, XBiotech's future financial performance will depend heavily on its ability to navigate these challenges and successfully bring its product candidates to market.
About XBiotech Inc.
XBiotech Inc. is a biopharmaceutical company specializing in discovering and developing True Human monoclonal antibodies from naturally immune donors. Its focus includes therapies targeting inflammatory and infectious diseases, notably IL-1a inhibitors for conditions like cancer, arthritis, and stroke. The company leverages proprietary manufacturing and clinical infrastructure, aiming to deliver safer, more effective biologics with potential for targeted, differentiated treatments across multiple medical indications.
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