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Radiopharma

NUCLIDIUM expands Series B to 105 million Swiss francs

The Swiss biotech raises a further 26 million Swiss francs for copper-based cancer therapies. The company now wants to take its radiopharma pipeline into advanced clinical trials.

Marc Nemitz · Basel, 27. May 2026

NUCLIDIUM expands Series B to 105 million Swiss francs — Nuclidium C-Level | (c) Nuclidium

Radiopharma NUCLIDIUM has completed an oversubscribed extension of its Series B financing round. The additional financing of 26 million Swiss francs brings the total volume of the round to 105 million Swiss francs or around 115 million euros.

The extension was led by existing investors such as Kurma Growth Opportunities Fund, Angelini Ventures, the EIB co-investment facility Aurea, Wellington Partners and Neva SGR (Intesa Sanpaolo Group). New investors include DeepTech & Climate Fonds (DTCF), Bayern Kapital, Vives Partners and NRW.BANK.

Focus on copper-based radiotheranostics

NUCLIDIUM develops so-called radiotheranostics. These are active substances that combine the diagnosis and treatment of cancer. The company focuses on copper isotopes: copper-61 for imaging and copper-67 for therapeutic applications.

The current focus is on the programs NU101 against metastatic castration-resistant prostate cancer and NU201 against metastatic breast cancer. Both candidates are due to start therapeutic phase 1/2a trials this year. According to CEO and co-founder Leila Jaafar, the data from the diagnostic phase 1/2 trials to date show "strong momentum" for the company's approach.

Expansion of clinical trials and production

The fresh capital will be used in particular to further develop the clinical programs. NUCLIDIUM is also planning to expand its international production and manufacturing network for diagnostics and therapy. In addition, the company intends to develop new target structures for preclinical programs in order to use radiotheranostics for other solid tumor types in the future.

Radiopharma growth market

Radiopharmaceuticals are currently regarded as one of the most dynamic growth areas in oncology. Investors see great potential in precise, targeted therapies in particular. The investors involved particularly emphasize the company's differentiation through its copper-based approach and the easy integration of the technology into existing hospital processes.

NUCLIDIUM has sites in Basel and Munich and is currently in the clinical development phase.

Extension Finanzierungsrunde Series-B

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Investor Landshut Bayern Kapital Subsidiary of LfA Förderbank Bayern invests venture capital in companies located in Bavaria.

Investor Düsseldorf NRW.BANK Development Bank of the State of North Rhine-Westphalia.

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