Montreal, Quebec--(Newsfile Corp. - June 1, 2026) - Defence Therapeutics Inc. (CSE: DTC) (OTCQB: DTCFF) (FSE: DTC) ("Defence" or the "Company"), a publicly traded biotechnology and precision intracellular drug-delivery company, is pleased to announce the appointment of Dr. John Lambert to its Board of Directors, effective immediately. Dr. Lambert brings more than four decades of scientific leadership and pioneering expertise in the development of antibody-drug conjugates ("ADCs"), further strengthening Defence's strategic capabilities as the Company advances its ACCUM®-enabled ADC platform and partnership programs.