Since 2017, Working Group III of the United Nations Commission on International Trade Law (UNCITRAL) has been working on the reform of investor-State Dispute Settlement (ISDS). During the 39th Session of Working Group III in 2020, the delegations have expressed a shared recognition of the value and importance in promoting the greater use of mediation in ISDS. Either used on its own or jointly with arbitration, mediation has also been receiving increasing attention in resolving international investment disputes, given the array of distinctive benefits it has to offer. Amongst its many recognised merits, mediation emphasises on harmony, saves costs and time, preserves relationship between investors and host jurisdictions, and provides autonomy and flexibility in the dispute resolution process. Against this background, this virtual pre-intersessional meeting is organised, aiming to facilitate the sharing of information on mediation and contribute to the discussion of Working Group III as it considers the way forward on the development of mediation as an ISDS reform option. This event is honoured to gather prestigious experts from different fields, including the academia, legal sector, governments, and international organisations, to contemplate on a range of important topics such as overcoming challenges to the use of mediation in ISDS, the multi-tiered dispute resolution process (mediation protocol), the hybrid models of arbitration and mediation, as well as the way forward for mediation as a reform option for ISDS. For further details, please refer to the eFlyer.