Commission Implementing Regulation (EU) 2026/1291, containing the revised templates for insider lists, has been published in the Official Journal of the EU and will apply from 5 July 2026.

Mandatory new format

From that date, issuers subject to EU MAR will be required to use the new prescribed format for insiders lists, replacing the existing templates under Commission Implementing Regulation (EU) 2022/1210.

EU / UK divergence

There is no corresponding change under UK MAR.  For dual-listed issuers, this introduces a clear divergence in documentation requirements across the two regimes.

MAR reforms in context