Press releases

Summary Financial overview October 1 – December 31, 2019 Net sales amounted to SEK 0.0 M (0.0) Loss for the period was SEK 244,9 M (loss: 112.0) Loss per share, before and after dilution, was SEK 4.42 (loss: 2.54) On December 31 cash and cash equivalents amounted to SEK 926.2 M (375.6)

STOCKHOLM — January 24, 2020 — Oncopeptides AB (Nasdaq Stockholm: ONCO) announces today that it will host a webcast at 11am (CET) on Monday, January 27[th] 2020 where CEO Jakob Lindberg will present and explain melflufen’s mechanism of action

STOCKHOLM — January 7, 2020 — Oncopeptides AB (Nasdaq Stockholm: ONCO) announced today that Karin Eklund Vanderpol has been appointed as head of regulatory affairs of Oncopeptides. Karin has 20 years of experience from senior positions in regulatory affairs. Prior to joining Oncopeptides, she served as Global Regulatory Director at Swedish Orphan Biovitrum. She will be a member Oncopeptides’ Management Team and will start today. Elisabeth Augustsson, who has been responsible for Oncopeptides’ regulatory function since 2015 will continue in a senior role in the regulatory team

Stockholm, Sweden – 17 December 2019 – An Extraordinary General Meeting in Oncopeptides AB (publ) (ONCO) was held today, at Tändstickspalatset in Stockholm. At the Extraordinary General Meeting, the following principal resolutions were passed

STOCKHOLM — December 8, 2019 — Oncopeptides AB (Nasdaq Stockholm: ONCO) will today present updated data from the ongoing Phase 2 ANCHOR (OP-104) triple combination study at the ASH Annual Meeting 2019. In the data presented, melflufen and dexamethasone demonstrated positive efficacy in combination with daratumumab or bortezomib in patients with relapsed/refractory multiple myeloma (RRMM). Preclinical data supporting clinical development of melflufen in AL amyloidosis will also be presented for the first time

STOCKHOLM — December 7, 2019 — Oncopeptides AB (Nasdaq Stockholm: ONCO) will today present follow-up data from the pivotal Phase 2 HORIZON (OP-106) study at the ASH Annual Meeting 2019. Melflufen showed an overall response rate (ORR) of 29% and clinical benefit rate (CBR) of 37% in patients with late-stage relapsed/refractory multiple myeloma (RRMM). The safety profile remained consistent with prior reports from the HORIZON study. These data reinforce Oncopeptides’ view that melflufen can play a role in the treatment of patients with RRMM and the Company plans to submit a New Drug Application (NDA) to the FDA in the first half of 2020

Stockholm – December 6, 2019 – Oncopeptides AB (Nasdaq Stockholm: ONCO), announces today that the company will host a webcast on Tuesday, December 10[th], 2019, at 13:00 (CET) to provide an update regarding the data presented December 7-8 at the American Society Hematology (ASH) Annual Meeting 2019. The webcast will be hosted by CEO Jakob Lindberg

Stockholm – December 2, 2019 - Oncopeptides AB (Nasdaq Stockholm: ONCO) announced today that Joseph Horvat has been appointed as President North America and CEO of Oncopetides Inc. Joseph will serve on the Management Team of Oncopeptides and will start today

Summary Financial overview July 1 – September 30, 2019 Net sales amounted to SEK 0.0 M (0.0) Loss for the period was SEK 189.8 M (loss: 94.0) Loss per share, before and after dilution, was SEK 3.53 (loss: 2.14) On September 30 cash and cash equivalents amounted to SEK 1,122.3 M (488.9)

The shareholders in Oncopeptides AB (publ), reg. no. 556596-6438, with registered office in the municipality of Stockholm, (“Oncopeptides” or the “Company”) are hereby given notice to attend an Extraordinary General Meeting to be held at Tändstickspalatset, Västra Trädgårdsgatan 15, Stockholm, Sweden, on Tuesday 17 December 2019 at 3.00 p.m. Coffee will be served starting at 2.30 p.m., at which time the registration for attendees will commence