This report covers the work undertaken by the Executive Board of the clean development mechanism from 13 September 2019 to 14 December 2020. The primary issue faced by the Board during the reporting period was the need to address matters related to the end of the second commitment period of the Kyoto Protocol due to the postponement of the sixteenth session of the Conference of the Parties serving as the meeting of the Parties to the Kyoto Protocol until after the end of that commitment period. This report contains the recommendations of the Executive Board to the Conference of the Parties serving as the meeting of the Parties to the Kyoto Protocol in this regard.