Veteran biotech executive to lead company growth as it advances multiple dual-payload ADCs through clinical development for people living with cancer

Piers Ingram, PhD, Co-Founder, transitions to Senior Advisor and continues to serve on the Board of Directors; Jerome Boyd-Kirkup, PhD, founding Chief Scientific Officer, transitions to Senior Scientific Advisor

SAN DIEGO and SEATTLE and SINGAPORE, Sept. 09, 2026 (GLOBE NEWSWIRE) -- Callio Therapeutics ("Callio" or "the Company"), a clinical-stage biotechnology company advancing dual-payload antibody-drug conjugates (ADCs) as the next frontier of rationally designed targeted cancer therapy, today announced the appointment of Zachary ("Zach") Hornby as Chief Executive Officer. Hornby brings significant experience leading innovative biotechnology companies through clinical development, private and public financings, and strategic partnerships.