Judgment of the Court (Fourth Chamber) of 9 September 2021.#FN and Others v Übernahmekommission.#Request for a preliminary ruling from the Bundesverwaltungsgericht.#Reference for a preliminary ruling – Company law – Takeover bids – Directive 2004/25/EC – Article 5 – Mandatory bid – Article 4 – Supervisory authority – Final decision making a finding of infringement of the obligation to make a takeover bid – Binding effect of that decision in subsequent proceedings for an administrative sanction initiated by the same authority – EU law principle of effectiveness – General principles of EU law – Rights of the defence – Charter of Fundamental Rights of the European Union – Articles 47 and 48 – Right to silence – Presumption of innocence – Access to an independent and impartial tribunal.#Case C-546/18.