29 August 2025

Thor Medical and Oncoinvent Enter Strategic Thorium-228 Supply Agreement

Thor Medical ASA, a leading emerging supplier of alpha-emitters for next-generation precision cancer treatment, and Oncoinvent ASA, a clinical-stage radiopharmaceutical company, have entered into a strategic agreement for Thorium-228 radioisotopes to supply the Phase 3 clinical program for Radspherin®, Oncoinvent’s lead product candidate.

Under the terms of the agreement, Thor Medical will supply Thorium-228 from AlphaOne, the company’s first commercial-scale manufacturing plant currently under construction. Thorium-228 from Thor Medical will serve as the starting material for the manufacture of Radium-224, the key radioisotope in Radspherin®, directly targeting cancers in body cavities. Oncoinvent is currently conducting a randomised Phase 2 trial evaluating Radspherin® for peritoneal carcinomatosis from ovarian cancer.

“We are pleased to have secured additional sources for the supply of Thorium-228 as we advance the planning of our Phase 3 program with Radspherin® for the treatment of peritoneal metastases originating from ovarian cancer. The availability of Thorium-228 within Norway’s expanding radiopharmaceutical ecosystem is of great strategic value and provides the company with significant flexibility,” says Øystein Soug, CEO of Oncoinvent.

“This agreement reflects the growing demand for sustainable and scalable sources of alpha-emitters,” says Jasper C. Kurth, CEO of Thor Medical. “We are seeing the emergence of a vibrant radiopharmaceutical cluster in the greater Oslo region, where world-class research, biotech innovation, and industrial production are coming together. Thor Medical is proud to be part of this ecosystem and to support the development of promising cancer treatments close to home.”

With both companies headquartered in Oslo, this agreement illustrates the strength of Norway’s growing network of radiopharmaceutical companies and targeted alpha therapies. This geographic concentration of scientific, clinical, and industrial capabilities is fostering a highly collaborative environment, positioning Norway as an emerging center for innovation and scalable production in the field of targeted alpha therapies.

CONTACT

Brede Ellingsæter, CFOO Thor Medical, +47 472 38 440, brede.ellingseter@thormedical.com,

Tore Kvam, Chief Financial Officer Oncoinvent, kvam@oncoinvent.com

ABOUT THOR MEDICAL ASA

Thor Medical is an emerging supplier of alpha particle emitters produced from naturally occurring thorium. Its proprietary production process requires no irradiation or use of nuclear reactors, and provides reliable, environmentally friendly, cost-efficient supply of alpha-emitters for the radiopharmaceutical industry. Thor Medical is headquartered in Oslo, Norway and listed on the Oslo Stock Exchange under the ticker symbol ‘TRMED’.

ABOUT ONCOINVENT ASA

Oncoinvent is a clinical-stage biotechnology company developing novel radiopharmaceutical therapies against cancer. The lead product candidate, Radspherin®, uses the alpha-emitting radionuclide radium-224, directly targeting micro-metastases post-surgery, harnessing the benefits of modern radiopharmaceuticals without the complexities of biological targeting. Oncoinvent is investigating the safety and efficacy of Radspherin® in a clinical development program in two indications.  In addition to the finalized phase 1/2a trial in colorectal cancer, one Phase 1 trial and one randomized Phase 2 trial, both in ovarian cancer, are ongoing in the US, UK and Europe. Preliminary clinical efficacy data are highly encouraging, and no serious toxicity or safety concerns have been reported to date. The experienced Oncoinvent team runs a state-of-the-art manufacturing facility to produce drug products for clinical trials in Nydalen, Oslo. Oncoinvent is listed on the Euronext Growth Oslo.

29 August 2025

Thor Medical and Oncoinvent Enter Strategic Thorium-228 Supply Agreement

Thor Medical ASA, a leading emerging supplier of alpha-emitters for next-generation precision cancer treatment, and Oncoinvent ASA, a clinical-stage radiopharmaceutical company, have entered into a strategic agreement for Thorium-228 radioisotopes to supply the Phase 3 clinical program for Radspherin®, Oncoinvent’s lead product candidate.

2025-08-29 TRMED x OncoInvent stock exchange release

Under the terms of the agreement, Thor Medical will supply Thorium-228 from AlphaOne, the company’s first commercial-scale manufacturing plant currently under construction. Thorium-228 from Thor Medical will serve as the starting material for the manufacture of Radium-224, the key radioisotope in Radspherin®, directly targeting cancers in body cavities. Oncoinvent is currently conducting a randomised Phase 2 trial evaluating Radspherin® for peritoneal carcinomatosis from ovarian cancer.

“We are pleased to have secured additional sources for the supply of Thorium-228 as we advance the planning of our Phase 3 program with Radspherin® for the treatment of peritoneal metastases originating from ovarian cancer. The availability of Thorium-228 within Norway’s expanding radiopharmaceutical ecosystem is of great strategic value and provides the company with significant flexibility,” says Øystein Soug, CEO of Oncoinvent.

“This agreement reflects the growing demand for sustainable and scalable sources of alpha-emitters,” says Jasper C. Kurth, CEO of Thor Medical. “We are seeing the emergence of a vibrant radiopharmaceutical cluster in the greater Oslo region, where world-class research, biotech innovation, and industrial production are coming together. Thor Medical is proud to be part of this ecosystem and to support the development of promising cancer treatments close to home.”

With both companies headquartered in Oslo, this agreement illustrates the strength of Norway’s growing network o[GO1]f radiopharmaceutical companies and targeted alpha therapies. This geographic concentration of scientific, clinical, and industrial capabilities is fostering a highly collaborative environment, positioning Norway as an emerging center for innovation and scalable production in the field of targeted alpha therapies.

CONTACT

Brede Ellingsæter, CFOO Thor Medical, +47 472 38 440, brede.ellingseter@thormedical.com,

Tore Kvam, Chief Financial Officer Oncoinvent, kvam@oncoinvent.com

ABOUT THOR MEDICAL ASA

Thor Medical is an emerging supplier of alpha particle emitters produced from naturally occurring thorium. Its proprietary production process requires no irradiation or use of nuclear reactors, and provides reliable, environmentally friendly, cost-efficient supply of alpha-emitters for the radiopharmaceutical industry. Thor Medical is headquartered in Oslo, Norway and listed on the Oslo Stock Exchange under the ticker symbol 'TRMED'.

ABOUT ONCOINVENT ASA

Oncoinvent is a clinical-stage biotechnology company developing novel radiopharmaceutical therapies against cancer. The lead product candidate, Radspherin®, uses the alpha-emitting radionuclide radium-224, directly targeting micro-metastases post-surgery, harnessing the benefits of modern radiopharmaceuticals without the complexities of biological targeting. Oncoinvent is investigating the safety and efficacy of Radspherin® in a clinical development program in two indications.  In addition to the finalized phase 1/2a trial in colorectal cancer, one Phase 1 trial and one randomized Phase 2 trial, both in ovarian cancer, are ongoing in the US, UK and Europe. Preliminary clinical efficacy data are highly encouraging, and no serious toxicity or safety concerns have been reported to date. The experienced Oncoinvent team runs a state-of-the-art manufacturing facility to produce drug products for clinical trials in Nydalen, Oslo. Oncoinvent is listed on the Euronext Growth Oslo.

Øystein Soug

Chief Executive Officer

soug@oncoinvent.com

Oystein Soug has over 15 years of experience in biotechnology, holding several management positions. Most recently, Mr. Soug was CEO of Arxx Therapeutics, where he led the company to initiate the clinical programme and was responsible for the merger with Dutch pharma company Oxitope Pharma to create Calluna Pharma. Prior to Arxx, he served as CFO and then CEO of Targovax, an Oslo listed biotechnology company, which went public during Mr. Soug’s tenure. Mr. Soug started his career in biotech as CFO of Oslo-listed radiopharmaceutical company Algeta. During this period, the company conducted a successful phase 3 trial, launched its radium-223 based prostate cancer drug Xofigo® and out-licensed the drug. Mr. Soug co-led the sale of the company to Bayer in 2014.  

Mr. Soug holds an MSc in Economics and Financial Markets from Universität St. Gallen in Switzerland in 1997

Anders Månsson

Chief Executive Officer

mansson@oncoinvent.com

Anders Månsson is a business executive with over 25 years of experience from management roles in the pharmaceutical industry, focusing on commercialisation and M&A + licensing. Mr. Månsson has held leading roles in the industry both in his native Sweden and in other European countries, and he has worked extensively with the USA and Asia as focus markets in global roles.

Mr. Månsson holds a B.Sc. degree in Business & Economics from Lund’s University in Sweden as well as an MBA from Business School Lausanne in Switzerland. He has a broad-based industrial experience, featuring both large multinational companies such as Meda, Ferring & LEO Pharma, and including leading roles in start-ups and smaller biotech companies. On top of his executive role in Oncoinvent, Mr. Månsson holds two non-executive director positions serving on the board of EQL Pharma AB as well Immetric AB, the latter being an investment company focusing on life science.