28 April 2026

Oncoinvent ASA: Notice of Annual General Meeting

Oslo, Norway, 28 April 2026 – Oncoinvent ASA (ONCIN), will be holding its Annual General Meeting virtual on 20 May 2026 at 10:00 hours (CEST).

The notice and agenda of the annual general meeting is attached hereto, including further information on advance voting, power of attorney and physical participation. The notice will be sent to all registered shareholders, and the notice, the compensation report, the nomination committees recommendations and other documents referred to therein are made available on the Company's website: https://www.oncoinvent.com/investors/general-meetings/.

Oncoinvent ASA – Notice to AGM 2026.pdf

All shareholders are encouraged to exercise their shareholder rights, either through advance electronically voting through VPS Investor Services, by using the enclosed proxy form to provide proxy to the Chairman Gillies O’Bryan-Tear (or the person he appoints), or to attend the general meeting virtually.

Registration, advance vote or proxy for the Annual General Meeting can be registered through the company's website (https://www.oncoinvent.com/investors/general-meetings/) or VPS Investor Service (https://investor.vps.no/garm/auth/login) within 18 May 2026, 23:59 hours (CEST). Virtual participants also need to be logged in to the meeting before 10:00 hours (CEST) 20 May 2026. All shareholders will receive a reference number and a pin code required for registration through the company's website. Reference number and pin code will be received either by VPS Investor Service or by post depending on if the shareholder is registered as electronical user. We encourage all shareholders to register as electronical users in VPS.

Oncoinvent ASA - Notice to AGM 2026 final

For further information, please contact:

Oystein Soug, Chief Executive Officer
Email: IR@oncoinvent.com

This information is subject to the disclosure requirements pursuant to Euronext Oslo Rule Book II for companies listed on Oslo Børs and Section 5-12 of the Norwegian Securities Trading Act.



About Oncoinvent

Oncoinvent is developing Radspherin®, a receptor-independent alpha radiation therapy that leverages the unique anatomy of the abdominal cavity to destroy residual micrometastases using a single, highly localized dose of alpha radiation. The initial clinical focus is treatment of ovarian and colorectal cancer patients after surgical removal of the primary tumor and visible metastases in the peritoneum, the thin membrane lining the abdominal cavity and covering the abdominal organs.

This radiopharmaceutical is designed to prevent or delay recurrence in the peritoneal cavity, keeping patients disease-free for longer than the current standard of care and thereby also impacting overall survival. It is broadly applicable to any cancer that spreads to the peritoneum, e.g. ovarian, colorectal, and gastric cancers. Radspherin® stands out for its simplicity, excellent safety profile, and seamless integration into existing surgical workflows. Oncoinvent’s product is easy to use, avoids systemic delivery and significant toxicity. It is also differentiated in being simple to manufacture, scalable, and supply de-risked.

Data from two trials in ovarian (phase 1) and colorectal (phase 1/2a) cancers, are highly promising, showing an excellent safety profile and meaningful signals of efficacy. Interim data from an ongoing, randomized, controlled phase 2 ovarian cancer trial is expected in 2026. With cost-effective manufacturing, blockbuster potential, active pharma partnership momentum, plus strong endorsements from leading experts, Oncoinvent is built for scale and commercial success, and is set to become the new standard for post-surgical cancer care. The Company was founded by the originators of Algeta and Xofigo (acquired by Bayer).

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

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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.

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