Immunocore reports fourth quarter and full year 2025 financial results and provides a business update

KIMMTRAK (tebentafusp-tebn) Q4 net sales of $104.5 million and $400.0 million for full year 2025; expect moderating revenue growth in 2026

TEBE-AM enrollment completion anticipated 1H 2026 with topline data expected as early as 2H 2026

PRAME franchise Phase 1/2 data to be presented in 2H 2026: brenetafusp in ovarian and lung cancer, and initial data with half-life extended candidate (IMC-P115C)

Additional Phase 1 HIV data to be presented in 2H 2026

Cash, cash equivalents and marketable securities of $864.2 million as of December 31, 2025

Conference call today, February 25 at 8:00AM ET, 1:00 PM GMT

(OXFORDSHIRE, England & RADNOR, Penn. & GAITHERSBURG, Md., US, 25 February 2026) Immunocore Holdings plc (Nasdaq: IMCR) (“Immunocore” or the “Company”), a commercial-stage biotechnology company pioneering and delivering transformative immunomodulating medicines to radically improve outcomes for patients with cancer, infectious diseases and autoimmune diseases, today announced its financial results for the fourth quarter and year ended December 31, 2025, and provided a business update.

The Company has demonstrated commercial momentum with 15 consecutive quarters of KIMMTRAK^® (tebentafusp-tebn) revenue growth, driven by US community and global market penetration. In addition, the Company is preparing for potential new melanoma indications as it enrolls three Phase 3 trials: TEBE-AM and ATOM, delivering on KIMMTRAK’s lifecycle management, and PRISM-MEL-301 evaluating brenetafusp in first-line melanoma. Enrollment in the late-line cutaneous melanoma trial (TEBE-AM) remains on track for completion in the first half of this year with topline overall survival (OS) data as early as the second half of 2026.

The Company continued to advance its clinical pipeline beyond melanoma into other tumor types enrolling patients across multiple early-stage trials. In the second half of 2026, the Company expects to present data from the ongoing ovarian and NSCLC expansion cohorts of the Phase 1/2 trial of brenetafusp and the initial data from the half-life extended PRAME-A02 candidate (IMC-P115C).

The Company is progressing on its growth opportunities beyond oncology, as it continues to dose escalate in the HIV functional cure program and plans to enter the clinic with its first autoimmune candidate in the first half of this year. The Company’s strong balance sheet provides the financial flexibility to execute these programs.

“With $400 million in KIMMTRAK sales and a diverse clinical portfolio, Immunocore had a productive year of growth and progress in 2025,” said Bahija Jallal, CEO of Immunocore. “Our priority for 2026 is the clear execution of our clinical trials, particularly as we anticipate key data in oncology and begin our first trial in autoimmune disease. We remain focused on the long-term goal of developing medicines that can significantly improve patient lives."

Financial Results

For the fourth quarter of 2025 (Q4 2025), total net product revenue (or ‘net sales’) arising from the sales of KIMMTRAK was $104.5 million, compared to $84.1 million for the same period in 2024. Q4 2025 sales were $69.0 million in the United States, $32.1 million in Europe, and $3.4 million in international regions.

For the year ended December 31, 2025 (FY 2025), net sales of KIMMTRAK were $400.0 million, compared to $310.0 million for the same period in 2024. FY 2025 sales were $257.0 million in the United States, $131.4 million in Europe and $11.6 million in international regions. For both the Q4 2025 and FY 2025, the increases in net product sales were due to increased volumes in the United States and Europe as well as global country expansion.

Research & development (R&D) expenses for Q4 2025 were $78.8 million, compared to $60.9 million for Q4 2024. R&D expenses for FY 2025 were $274.9 million, compared to $222.2 million for FY 2024. These increases were due to preclinical expenses related to the advancement of the Company’s autoimmune programs, including clinical material manufacturing for anticipated Phase 1 initiations, and due to clinical expenses related to the progression of our Phase 3 trials, primarily TEBE-AM and PRISM-MEL-301.

Selling, general and administrative (SG&A) expenses for Q4 2025 were $42.6 million, compared to $42.3 million for Q4 2024. SG&A expenses for FY 2025 were $165.4 million, compared to $155.8 million for FY 2024. These increases were primarily due to costs related to commercial and business support functions to support our growing pipeline and global commercial expansion.

Net loss for Q4 2025 was $30.1 million compared to a net loss of $23.8 million for Q4 2024, and full year net loss for 2025 was $35.5 million compared to a full year net loss of $51.1 million in 2024.

The Q4 2025 basic and diluted loss per share was $0.60 compared to $0.47 for Q4 2024. Basic and diluted loss per share for FY 2025 was $0.71, compared to $1.02 for FY 2024.

Cash, cash equivalents and marketable securities were $864.2 million as of December 31, 2025, as compared to $820.4 million as of December 31, 2024.

The Company’s lead product, KIMMTRAK^® (tebentafusp), is approved in 39 countries and has been launched in 30 countries globally to date for HLA-A*02:01 positive people with unresectable or metastatic uveal melanoma (mUM). KIMMTRAK continues to be the standard of care in most markets where it is launched.

The Company sees three key growth areas as it plans to expand patient reach for KIMMTRAK, including continued US community and global market penetration in mUM, the potential expansion into 2L+ advanced cutaneous melanoma (CM), and the potential expansion into adjuvant uveal melanoma.

Metastatic uveal melanoma

2L+ advanced cutaneous melanoma

Adjuvant uveal (or ocular) melanoma

Brenetafusp is the Company’s lead PRAME-A02 ImmTAC bispecific candidate. Brenetafusp is being evaluated in combination with nivolumab in a Phase 3 registrational trial (PRISM-MEL-301) in patients with first-line, advanced cutaneous melanoma, and in a Phase 1/2 clinical trial as monotherapy and in combination across multiple tumor types, including ovarian cancer and non-small cell lung cancer (NSCLC).

PRISM-MEL-301 – First PRAME Phase 3 clinical trial with brenetafusp in first-line advanced cutaneous melanoma

Phase 1/2 clinical trials of brenetafusp and IMC-P115C (PRAME-A02 Half-Life Extended) in multiple solid tumors

The Company’s bispecific TCR technology platform has the potential to offer a new approach for the treatment of certain chronic infections and aims to eliminate evidence of remaining virus in circulation after the patient stops taking medication – known as a ‘functional cure’. The Company is studying an investigational candidate for people living with human immunodeficiency virus (HIV). The Company has completed the single ascending dosing in the Phase 1 study for its chronic hepatitis B infection (HBV) program and is evaluating next steps.

Phase 1/2 trial of IMC-M113V (Gag-A02) for people living with HIV

The key differentiator of the ImmTAAI platform is tissue-specific, down modulation of the immune system, as the candidates suppress pathogenic T cells via PD1 receptor agonism only when tethered to the target tissue.

Immunocore’s proprietary T cell receptor (TCR) technology generates a novel class of bispecific biologics called ImmTAC (Immune mobilizing monoclonal TCRs Against Cancer) molecules that are designed to redirect the immune system to recognize and kill cancerous cells. ImmTAC molecules are soluble TCRs engineered to recognize intracellular cancer antigens with ultra-high affinity and selectively kill these cancer cells via an anti-CD3 immune-activating effector function. Based on the demonstrated mechanism of T cell infiltration into human tumors, the ImmTAC mechanism of action holds the potential to treat hematologic and solid tumors, regardless of mutational burden or immune infiltration, including immune “cold” low mutation rate tumors.

ImmTAV (Immune mobilizing monoclonal TCRs Against Virus) molecules are novel bispecifics that are designed to enable the immune system to recognize and eliminate virally infected cells. Immunocore is advancing clinical candidates to cure patients with HIV and hepatitis B virus (HBV). The Company aims to achieve sustained control of HIV after patients stop anti-retroviral therapy (ART), without the risk of virological relapse or onward transmission. This is known as ‘functional cure’. For the treatment of HBV, the Company aims to achieve sustained loss of circulating viral antigens and markers of viral replication after stopping medication for people living with chronic HBV.

ImmTAAI (Immune mobilizing monoclonal TCRs Against AutoImmune disease) molecules are novel bispecifics that are designed for tissue-specific down modulation of the immune system. When tethered to the tissue of interest, ImmTAAI candidates suppress pathogenic T cells via PD1 receptor agonism. The Company is currently advancing two candidates for autoimmune diseases, including type 1 diabetes and inflammatory dermatological diseases.

The Phase 3 registrational trial is randomizing HLA-A*02:01-positive patients with previously untreated, advanced or metastatic cutaneous melanoma, to brenetafusp 160 mcg + nivolumab or a control arm of either nivolumab or nivolumab + relatlimab. The brenetafusp dose of 160 mcg was recommended by the Independent Data Monitoring Committee, following a pre-planned review of safety for all three arms and of efficacy for the two brenetafusp regimens (40 mcg and 160 mcg) in the first 90 patients randomized in the Phase 3 trial. The primary endpoint of the trial is progression free survival (PFS) by blinded independent central review (BICR), with secondary endpoints of overall survival (OS) and overall response rate (ORR).

IMC-F106C-101 is a first-in-human, Phase 1/2 dose escalation trial in patients with multiple solid tumors, including non-small cell lung and ovarian cancers. The Phase 1 dose escalation trial was designed to determine the maximum tolerated dose (MTD), as well as to evaluate the safety, preliminary anti-tumor activity and pharmacokinetics of IMC-F106C (brenetafusp), a bispecific protein built on Immunocore’s ImmTAC technology, and the Company’s first molecule to target the PRAME antigen. The Company is currently focusing on enrolling patients in combination arms with standards-of-care across multiple tumor types.

The trial is randomizing patients with second-line or later advanced cutaneous melanoma who have progressed on an anti-PD1, received prior ipilimumab and, if applicable, received a BRAF kinase inhibitor. Patients are randomized to one of three arms, including tebentafusp – as monotherapy or in combination with an anti-PD1 – or a control arm. The primary endpoint is overall survival.

The EORTC-sponsored Phase 3 clinical trial will include sites in 10 EU countries and the United States and is randomizing HLA-A*02:01-positive patients with high-risk primary uveal melanoma after definitive treatment, by surgery or radiotherapy, and no evidence of metastatic disease on imaging. The trial is expected to enroll a total of 290 patients who will be randomized 1:1 to one of two arms: tebentafusp as monotherapy or observation. The primary endpoint of the trial is relapse-free survival (RFS), with secondary objectives of overall survival and safety and tolerability of tebentafusp. Exploratory objectives include the comparison of the health-related quality of life between the treatment arms and the evaluation of the role of circulating tumor DNA (ctDNA) as a biomarker for the presence of residual disease.

Uveal melanoma is a rare and aggressive form of melanoma, which affects the eye. This is the most common primary intraocular malignancy in adults and up to 50% of people with uveal melanoma will eventually develop metastatic disease. Unresectable or metastatic uveal melanoma typically has a poor prognosis and had no approved treatment until KIMMTRAK.

Cutaneous melanoma (CM) is the most common form of melanoma. It is the most aggressive skin carcinoma and is associated with the vast majority of skin cancer-related mortality. The majority of patients with CM are diagnosed before metastasis but survival remains poor for the large proportion of patients with metastatic disease. Despite recent progress in advanced melanoma therapy, there is still an unmet need for new therapies that improve first-line response rates and duration of response as well as for patients who are refractory to first-line treatments.

KIMMTRAK is a novel bispecific protein comprised of a soluble T cell receptor fused to an anti-CD3 immune-effector function. KIMMTRAK specifically targets gp100, a lineage antigen expressed in melanocytes and melanoma. This is the first molecule developed using Immunocore’s ImmTAC technology platform, designed to redirect and activate T cells to recognize and kill tumor cells. KIMMTRAK has been approved for the treatment of HLA-A*02:01-positive adult patients with unresectable or metastatic uveal melanoma in the United States, European Union, Canada, Australia, and the United Kingdom.

Skin Reactions

Skin reactions, including rash, pruritus, and cutaneous edema occurred in 91% of patients treated with KIMMTRAK. Monitor patients for skin reactions. If skin reactions occur, treat with antihistamine and topical or systemic steroids based on persistence and severity of symptoms. Withhold or permanently discontinue KIMMTRAK depending on the severity of skin reactions.

Elevated Liver Enzymes

Elevations in liver enzymes occurred in 65% of patients treated with KIMMTRAK. Monitor alanine aminotransferase (ALT), aspartate aminotransferase (AST), and total blood bilirubin prior to the start of and during treatment with KIMMTRAK. Withhold KIMMTRAK according to severity.

Embryo-Fetal Toxicity

KIMMTRAK may cause fetal harm. Advise pregnant patients of potential risk to the fetus and patients of reproductive potential to use effective contraception during treatment with KIMMTRAK and 1 week after the last dose.

The most common adverse reactions (≥30%) in patients who received KIMMTRAK were cytokine release syndrome, rash, pyrexia, pruritus, fatigue, nausea, chills, abdominal pain, edema, hypotension, dry skin, headache, and vomiting. The most common (≥50%) laboratory abnormalities were decreased lymphocyte count, increased creatinine, increased glucose, increased AST, increased ALT, decreased hemoglobin, and decreased phosphate.

For more information, please see full Summary of Product Characteristics (SmPC) or full U.S. Prescribing Information (including BOXED WARNING for CRS).

Immunocore is committed to helping patients who need KIMMTRAK obtain access via its KIMMTRAKConnect program. The US program provides services with dedicated nurse case managers who provide personalized support, including educational resources, financial assistance, and site of care coordination. To learn more, visit KIMMTRAKConnect.com or call 844-775-2273.

Immunocore is a commercial-stage biotechnology company pioneering the development of a novel class of TCR bispecific immunotherapies called ImmTAX – Immune mobilizing monoclonal TCRs Against X disease – designed to treat a broad range of diseases, including cancer, autoimmune diseases and infectious diseases. Leveraging its proprietary, flexible, off-the-shelf ImmTAX platform, Immunocore is developing a deep pipeline in multiple therapeutic areas, including clinical and pre-clinical programs​ in oncology, infectious diseases, and autoimmune diseases. The Company’s most advanced oncology TCR therapeutic, KIMMTRAK, has been approved for the treatment of HLA-A*02:01-positive adult patients with unresectable or metastatic uveal melanoma in the United States, European Union, Canada, Australia, and the United Kingdom.

This press release contains “forward-looking statements” within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Words such as “may”, “will”, “believe”, “expect”, “plan”, “anticipate”, “aim”, “continue”, “target” and similar expressions (as well as other words or expressions referencing future events or circumstances) are intended to identify forward-looking statements. All statements, other than statements of historical facts, included in this press release are forward-looking statements. These statements include, but are not limited to, statements regarding the Company’s ability to reach more patients for KIMMTRAK, including continued U.S. community and global market penetration in mUM, the potential expansion into 2L+ advanced cutaneous melanoma, and the potential expansion into adjuvant uveal melanoma, and to deliver on KIMMTRAK’s lifecycle management; the Company’s ability to expand beyond melanoma into other tumor types and to realize growth opportunities beyond oncology; the Company’s ability to grow and advance its clinical pipeline; the estimated size of the patient populations for the Company’s product candidates; expectations regarding sales growth; expectations regarding the design, progress, timing, enrollment, randomization, scope, expansion, and results of the Company’s and its collaborators’ existing and planned clinical trials; the timing and sufficiency of clinical trial outcomes to support potential approval of any of the Company’s product candidates or those of, or combined with, its collaboration partners; the expected submission of clinical trial applications or investigational new drug applications; the flexibility provided by the Company’s balance sheet; the potential regulatory approval, and expected clinical benefits and availability of the Company’s product candidates. Any forward-looking statements are based on management’s current expectations and beliefs of future events and are subject to a number of risks and uncertainties that could cause actual events or results to differ materially and adversely from those set forth in or implied by such forward-looking statements, many of which are beyond the Company’s control. These risks and uncertainties include, but are not limited to, the impact of worsening macroeconomic conditions, including as a result of health epidemics or pandemics, war in Ukraine, the conflict in the Middle East, or global geopolitical tension, on the Company’s business, financial position, strategy and anticipated milestones, including Immunocore’s ability to conduct ongoing and planned clinical trials; the Company’s ability to obtain a clinical supply of current or future product candidates or commercial supply of KIMMTRAK or any future approved products; the Company’s ability to obtain and maintain regulatory approval of KIMMTRAK and its other product candidates; the Company’s ability and plans in continuing to establish and expand a commercial infrastructure and to successfully launch, market and sell KIMMTRAK and any future approved products; the Company’s ability to successfully expand the approved indications for KIMMTRAK or obtain marketing approval for KIMMTRAK in additional geographies in the future; the delay of any current or planned clinical trials, whether due to patient enrollment delays or otherwise; the Company’s ability to successfully demonstrate the safety and efficacy of its product candidates and gain approval of its product candidates on a timely basis, if at all; competition with respect to market opportunities; unexpected safety or efficacy data observed during preclinical studies or clinical trials; actions of regulatory agencies, which may affect the initiation, timing and progress of clinical trials or future regulatory approval; Immunocore’s need for and ability to obtain additional funding, on favorable terms or at all, including as a result of worsening macroeconomic conditions, including changes in inflation and interest rates and unfavorable general market conditions, and the impacts thereon of the war in Ukraine, the conflict in the Middle East, and global geopolitical tension; Immunocore’s ability to obtain, maintain and enforce intellectual property protection for KIMMTRAK or any of its product candidates it or its collaborators are developing; and the success of Immunocore’s current and future collaborations, partnerships or licensing arrangements. These and other risks and uncertainties are described in greater detail in the section titled "Risk Factors" in Immunocore’s filings with the Securities and Exchange Commission, including Immunocore’s most recent Annual Report on Form 10-K for the year ended December 31, 2025 filed with the Securities and Exchange Commission on February 25, 2026, as well as discussions of potential risks, uncertainties, and other important factors in the Company’s subsequent filings with the SEC. All information in this press release is as of the date of the release, and the Company undertakes no duty to update this information, except as required by law.

Immunocore

Sébastien Desprez, Head of Communications

T: +44 (0) 7458030732

E: sebastien.desprez@immunocore.com

Follow on LinkedIn: @Immunocore

Investor Relations

Clayton Robertson / Morgan Morse

T: +1 (215) 384-4781

E: ir@immunocore.com

Immunocore Holdings plc

Condensed Consolidated Statement of Operations

Fourth Quarter and Year Ended December 31, 2025 and 2024

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Immunocore Holdings plc

Condensed Consolidated Balance Sheets

As of December 31,

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Immunocore Holdings plc

Summary Condensed Consolidated Statements of Cash Flows

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