Pursuant to L. 355-3, when predefined events occur which may lead, or have already led, to significant changes in their activities and results, their system of governance, their risk profile, or their solvency and financial situation, insurance and reinsurance undertakings and the undertakings referred to in I of Article L. 356-21 must notify the Autorité de contrôle prudentiel et de résolution of the occurrence of such an event and of the information required for supervisory purposes.