 MONT-SAINT-GUIBERT, Belgium--BUSINESS WIRE--Regulatory News: Celyad Oncology SA Brussels:CYAD Paris:CYAD NASDAQ:CYAD Euronext Nasdaq: CYAD, a clinical-stage biotechnology company focused on the discovery and development of chimeric antigen receptor T cell CAR T therapies for cancer, today announced that the company plans to participate at the following conferences in June 2021: Jefferies Virtual Healthcare Conference Dates: Tuesday, June 1 Friday June 4, 2021 Presentation da 