This CPM Report to the World Radiocommunication Conference 2015 (WRC-15) was prepared in response to Resolution 1343 (C12) of the ITU Council to assist those who will be involved in the preparations for and deliberations at WRC-15. In addition, it includes some considerations related to Resolution 185 (Busan, 2014) approved at the Plenipotentiary Conference 2014. The Report was prepared and approved by the Conference Preparatory Meeting (CPM) at its Second Session in Geneva, 23 March to 2 April 2015. The Report is structured to follow the topics of the WRC-15 Agenda and its contents follow the outline approved by the First Session of the CPM, which was held during the week following WRC-12. A cross-reference list is provided to facilitate finding specific topics within the framework of the WRC-15 Agenda. This Report comprises six Chapters and two Annexes.