The Co-Chairs of many of the under-40 arbitration groups world-wide meet once a year in a retreat that is dedicated to their exchange and to the coordination of joint events. The retreat further is an opportunity to socialize among those that take an active part in shaping the young generation network of international arbitration.
The organization and responsibility for the annual meeting rotates among the groups. The first retreat was organized in 2009 by DIS40. The Spanish CEA40 was in charge of the retreat in 2010. In 2011, the Co-Chairs' Circle retreat was hosted by ARBIT and took place in Rome. In 2012, the Co-Chairs' Circle retreat was hosted by YAAP and took place in Vienna. In 2013, the retreat was hosted by APA sub40 and took place in Lisbon. NAI Jong Oranje was in charge of the retreat in 2014 which took place in Amsterdam. In 2015, the retreat was hosted by ASA Below40 and took place in the Villars, Switzerland. In 2016, the retreat was hosted by YACF in Helsinki, Finland.
The first Global Conference of the Co-Chairs' Circle on "Cultural Differences in International Arbitration" was hosted by DIS40 and took place in Berlin on 19 and 20 September 2014. The second Global Conference of the Co-Chairs' Circle on "Controversy in International Arbitration" was be hosted by YACF and took place in Helsinki on 27 and 28 May 2016.