The chief audit executive (CAE) has the responsibility to communicate audit results, including residual risks, to senior management. According to IIA Standard 2410 - Criteria for Communicating, the CAE should communicate the engagement's objectives, scope, conclusions, recommendations, and action plans. Residual risk, being a part of the audit outcome, should be reported at the same time as the audit results to ensure that senior management is fully informed of all aspects of the engagement. This allows senior management to understand the remaining risks after control measures have been applied.References:
* The Institute of Internal Auditors (IIA) - Standards for the Professional Practice of Internal Auditing, Standard 2410 - Criteria for Communicating