• 2017 Washington D.C.: Hans-Peter Wagner (Switzerland), Audrey Evans (USA), Giulio “Dan” D’Angio (USA)
  • 2018 Kyoto: Giuseppe Masera (Italy)
  • 2019 Lyon: Peter Hesseling (South Africa), Maud Brunat-Mentigny (France)
  • 2020 Virtual: Tim Eden (UK)
  • 2021 Virtual: Kate Matthay (USA)