Press releases

STOCKHOLM – September 30, 2025 – Oncopeptides AB (publ) (Nasdaq Stockholm: ONCO), a biotech company focused on difficult-to-treat cancers, today announces that the number of shares and votes in Oncopeptides has changed as a result of the rights issue which ended on September 15, 2025

THIS PRESS RELEASE MAY NOT BE MADE PUBLIC, PUBLISHED OR DISTRIBUTED, DIRECTLY OR INDIRECTLY, IN OR INTO AUSTRALIA, HONG KONG, ISRAEL, JAPAN, CANADA, NEW ZEALAND, SINGAPORE, SOUTH AFRICA, SWITZERLAND, THE UNITED STATES OR ANY OTHER JURISDICTION IN WHICH SUCH ACTIONS, WHOLLY OR IN PART, WOULD BE UNLAWFUL. THIS PRESS RELEASE DOES NOT CONSTITUTE AN OFFER TO BUY SECURITIES IN ONCOPEPTIDES AB (PUBL). SEE ALSO THE SECTION “IMPORTANT INFORMATION” BELOW IN THIS DOCUMENT

Stockholm, September 1, 2025 – Oncopeptides AB (publ) (Nasdaq Stockholm: ONCO), a biotech company focused on difficult-to-treat cancers, today announces the publication of two real-world evidence (RWE) abstracts on Pepaxti at the International Myeloma Society (IMS) Annual Meeting, September 17–20 in Toronto, Canada

THIS PRESS RELEASE MAY NOT BE MADE PUBLIC, PUBLISHED OR DISTRIBUTED, DIRECTLY OR INDIRECTLY, IN OR INTO AUSTRALIA, HONG KONG, ISRAEL, JAPAN, CANADA, NEW ZEALAND, SINGAPORE, SOUTH AFRICA, SWITZERLAND, THE UNITED STATES OR ANY OTHER JURISDICTION IN WHICH SUCH ACTIONS, WHOLLY OR IN PART, WOULD BE UNLAWFUL. THIS PRESS RELEASE DOES NOT CONSTITUTE AN OFFER TO BUY SECURITIES IN ONCOPEPTIDES AB (PUBL). SEE ALSO THE SECTION “IMPORTANT INFORMATION” BELOW IN THIS DOCUMENT

THIS PRESS RELEASE MAY NOT BE MADE PUBLIC, PUBLISHED OR DISTRIBUTED, DIRECTLY OR INDIRECTLY, IN OR INTO AUSTRALIA, HONG KONG, ISRAEL, JAPAN, CANADA, NEW ZEALAND, SINGAPORE, SOUTH AFRICA, SWITZERLAND, THE UNITED STATES OR ANY OTHER JURISDICTION IN WHICH SUCH ACTIONS, WHOLLY OR IN PART, WOULD BE UNLAWFUL. THIS PRESS RELEASE DOES NOT CONSTITUTE AN OFFER TO BUY SECURITIES IN ONCOPEPTIDES AB (PUBL). SEE ALSO THE SECTION “IMPORTANT INFORMATION” BELOW IN THIS DOCUMENT

Stockholm – August 21, 2025 – Oncopeptides AB (publ) (Nasdaq Stockholm: ONCO), a biotech company focused on difficult-to-treat cancers, today publishes the report for the second quarter 2025

THIS PRESS RELEASE MAY NOT BE MADE PUBLIC, PUBLISHED OR DISTRIBUTED, DIRECTLY OR INDIRECTLY, IN OR INTO AUSTRALIA, HONG KONG, ISRAEL, JAPAN, CANADA, NEW ZEALAND, SINGAPORE, SOUTH AFRICA, SWITZERLAND, THE UNITED STATES OR ANY OTHER JURISDICTION IN WHICH SUCH ACTIONS, WHOLLY OR IN PART, WOULD BE UNLAWFUL. THIS PRESS RELEASE DOES NOT CONSTITUTE AN OFFER TO BUY SECURITIES IN ONCOPEPTIDES AB (PUBL). SEE ALSO THE SECTION “IMPORTANT INFORMATION” BELOW IN THIS DOCUMENT

Stockholm – August 14, 2025 – Oncopeptides AB (publ), a biotech company focused on difficult-to-treat cancers, will publish the report for the second quarter 2025, at 08:00 CET on August 21, 2025

Stockholm, July 30, 2025 – Oncopeptides AB (publ) (Nasdaq Stockholm: ONCO), a biotech company focused on difficult-to-treat cancers, today announces a partnership with SD Pharma, a leading Spanish pharmaceutical broker specializing in oncology and hematology. This strategic partnership will broaden physician reach of Pepaxti across hospital channels throughout Spain

Stockholm, July 23, 2025 – Oncopeptides AB (publ) (Nasdaq Stockholm: ONCO), a biotech company focused on difficult-to-treat cancers, today announces that two real-world evidence (RWE) posters have been accepted for presentation at the upcoming International Myeloma Society (IMS) Annual Meeting, taking place in Toronto, Canada on September 17-20