This report describes activities relating to the technical review of information reported under the Convention in the fourth and fifth biennial reports of Parties included in Annex I to the Convention, including preparing for the reviews of fifth biennial reports and eighth national communications, and conducting the 9th meeting of lead reviewers and the training for reviewers of biennial reports and national communications. Information on the status of submission and review of fourth and fifth biennial reports and eighth national communications is contained in document FCCC/SBI/2022/INF.14.