
NUCLIDIUM closes Series B for € 84 million
Basel, Switzerland / Munich, Germany — NUCLIDIUM, a clinical-stage radiopharmaceutical company developing a proprietary copper-based theranostic platform, announced the closing of its Series B financing round of CHF 79 million (EUR 84 million). The round was led by Kurma Growth Opportunities Fund, Angelini Ventures, Wellington Partners and Neva SGR (Intesa Sanpaolo Group), with participation from DeepTech & Climate Fonds (DTCF), Bayern Kapital, Vives Partners, Eurazeo, NRW.BANK and HighLight Capital, as well as existing investors.
The proceeds will be used to advance the clinical development of NUCLIDIUM’s copper-61/copper-67 (61Cu/67Cu) theranostic pipeline in various oncology indications. In parallel, the company will expand its production and manufacturing capabilities through a global manufacturing network.
NUCLIDIUM’s differentiated platform combines tumor-targeting molecules with copper isotopes — copper-61 for diagnostics and copper-67 for therapy — to overcome current limitations in radiotheranostics, such as suboptimal clinical efficacy and manufacturing complexity. Diagnostic results from initial clinical studies in these indications show better lesion detection and tumor-to-background ratios compared to clinically approved tracers. Initial data was recently presented at SNMMI 2025 by Dr. Gary Ulaner, MD, PhD, demonstrating a favorable safety profile and potentially improved imaging performance of 61Cu-NuriPro™ compared to current PET imaging standards, suggesting great clinical potential and broader potential for the theranostic pairing of 61Cu/67Cu. Early therapeutic data from the two lead compounds NuriPro™ and TraceNET™ show good tumor-to-background ratios in metastatic prostate cancer and neuroendocrine tumors, including breast cancer.
“NUCLIDIUM is entering the next clinical phases with its compounds for the diagnosis and treatment of metastatic prostate cancer, neuroendocrine tumors and breast cancer,” said Leila Jaafar, PhD, CEO and co-founder of NUCLIDIUM. “Our copper-based radiotheranostics are designed for seamless use in hospital workflows, care and waste management, making these therapies more accessible worldwide.”
With this financing, NUCLIDIUM will further expand its global production and manufacturing network for diagnostics and therapeutics, grow its international team and strengthen its strategic collaboration with hospitals and academic centers, initially in Europe and North America.
In connection with the financing round, Dr. Daniel Parera, Partner at Kurma Partners, Dr. Regina Hodits, Managing Director at Angelini Ventures, and Liliana Nordbakk, Life Sciences Partner at Neva SGR, will join the Board of Directors of NUCLIDIUM.
Consultant NUCLIDIUM:
The Series B financing was supported by VISCHER AG and Walder Wyss, Switzerland, as legal advisors.
About NUCLIDIUM
NUCLIDIUM AG is a clinical-stage biotechnology company pioneering the development of next-generation copper-based radiopharmaceuticals for the diagnosis and treatment of cancer. Through the use of copper isotopes — copper-61 for diagnostics and copper-67 for therapy — NUCLIDIUM is creating a differentiated platform that has the potential to overcome existing limitations in radiotheranostics.
The company’s operations in Switzerland and Germany combine innovative chemistry, deep clinical expertise and strategic manufacturing capabilities to provide scalable, accessible and clinically superior theranostic solutions to patients worldwide. NUCLIDIUM’s mission is to increase the reach and efficacy of radiotheranostics while addressing critical unmet medical needs in oncology and women’s health.