Highlights: The fifteenth meeting of the Open-ended Working Group will take place from Tuesday, 23 June to Friday, 26 June 2026, with pre-meetings, including Bureau and regional meetings, taking place on Monday, 22 June. The Working Group is expected to progress items in its work programme, with topics to include: Work to improve the functioning of the prior informed consent procedure Technical guidelines on Persistent Organic Pollutants, e-waste, waste lead-acid batteries, used and waste pneumatic tyres and mercury Practical guidance on the development of inventories of waste for certain waste streams Plastic waste Used textiles and textile waste Providing further legal clarity Basel Convention Partnership Programme Cooperation with the World Customs Organization and the International Maritime Organization