Onco-Innovations Reports Continued Advancement of Key Materials Used in the Synthesis of its Active Pharmaceutical Ingredient for ONC010 Development Program

VANCOUVER, BC / ACCESS Newswire / May 19, 2026 / Onco-Innovations Limited (CBOE CA:ONCO)(OTCQB:ONNVF)(Frankfurt:W1H, WKN: A3EKSZ) ("Onco" or the "Company") is pleased to announce, further to its news release dated April 28, 2026, continued progress in the intermediate¹ scale-up and process development activities for the A83 and B4 precursor components supporting the Company's lead oncology program, ONC010, a novel nanoparticle-formulated PNKP inhibitor currently advancing through IND-enabling development.

The work is being conducted through the Company's integrated chemistry, manufacturing and controls (CMC) development program in collaboration with Dalton Pharma Services and forms part of the broader manufacturing strategy designed to support future GMP production, regulatory readiness and planning towards First-in-Human clinical development activities in Australia.

Recent development activities have focused on process optimization, intermediate-scale synthesis, analytical characterization and manufacturing reproducibility for both the A83 and B4 precursor materials, which represent foundational components within the ONC010 nanoparticle delivery and formulation platform.

Dalton Pharma Services has successfully advanced multiple intermediate scale-up activities while continuing to optimize process conditions, purification methodologies and quality control parameters intended to support scalable downstream manufacturing and formulation integration. The Company indicated that recent manufacturing work has demonstrated encouraging purity and reproducibility characteristics across key intermediate production steps.

"These continued manufacturing advancements represent another important step in strengthening the operational foundation of the ONC010 program. The successful progression of A83 and B4 precursor scale-up activities reflects the disciplined execution of our integrated CMC strategy and supports our broader objective of advancing ONC010 toward clinical translation. We remain highly focused on building a scalable, reproducible and regulatory-aligned manufacturing pathway capable of supporting long-term clinical and commercial development," said Thomas O'Shaughnessy, CEO of Onco-Innovations.

About Onco-Innovations Limited

Onco-Innovations is a Canadian-based company dedicated to cancer research and treatment, specializing in oncology. Onco's mission is to pursue the prevention and treatment of cancer through pioneering research and innovative solutions. The Company has secured an exclusive worldwide license to patented technology that targets solid tumours.

ON BEHALF OF ONCO-INNOVATIONS LIMITED,

"Thomas O'Shaughnessy"
Chief Executive Officer

For more information, please contact:

Thomas O'Shaughnessy
Chief Executive Officer
Tel: + 1 888 261 8055
investors@oncoinnovations.com

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