Celyad Oncology SA engages in the development of cell-based therapies for the treatment of cancer. It operates through the following segments: Cardiology, Immuno-oncology, and Corporate. The Cardiology segment includes the company's Cardiopoiesis, Corquest, and C-Cathez platforms. The Immuno-oncology segment consists of all assets developed based on the CAR-T cell platform. The company was founded by Michel Lussier, William Wijns, and Christian Homsy on July 24, 2007 and is headquartered in Mont-Saint-Guibert, Belgium.