Commission Delegated Regulation (EU) 2021/2155 of 13 August 2021 supplementing Directive (EU) 2019/2034 of the European Parliament and of the Council with regard to regulatory technical standards specifying the classes of instruments that adequately reflect the credit quality of the investment firm as a going concern and possible alternative arrangements that are appropriate to be used for the purposes of variable remuneration (Text with EEA relevance)