Celyad Oncology SA: Publication of a Transparency Notification Received From Fortress Investment Group LLC (Article 14 §1 of the Law of 2 May 2007)

(CYAD) MONT-SAINT-GUIBERT, Belgium--(BUSINESS WIRE)--Regulatory News: Celyad Oncology SA (Euronext: CYAD) (“Celyad Oncology” or the “Company”) today announced, in accordance with Article 14 of the Belgian Law of 2 May 2007 regarding the publication of major shareholdings in issuers whose securities are admitted to trading on a regulated market (the “Transparency Law”), that it received a notification of transparency dated September 08, 2025, indicating that CFIP CLYD (UK) Limited, an affiliate of Fort