SIx editions of this workshop have already taken place, each time co-located with AAMAS. The first three editions were half-day workshops, and the latter three were full-day workshops.

• The First Workshop on Cooperative Games in Multiagent Systems (CoopMAS-2010)
  (May 10th 2010, Toronto, Canada)
  Organized by Yoram Bachrach (Microsoft Research, Cambridge, UK), Edith Elkind (Nanyang Technological University, Singapore), Kate Larson (University of Waterloo, Canada), and Michael Wooldridge (University of Liverpool).
• The Second Workshop on Cooperative Games in Multiagent Systems (CoopMAS-2011)
  (May 3rd 2011, Tapei, Taiwan)
  Organized by Stephane Airiau (University of Amsterdam), Yoram Bachrach (Microsoft Research, Cambridge UK) and Michael Wooldridge (University of Liverpool).
• The Third Workshop on Cooperative Games in Multiagent Systems (CoopMAS-2012)
  (June 4th 2012, Valencia, Spain)
  Organized by Stephane Airiau (University of Amsterdam), Yoram Bachrach (Microsoft Research, Cambridge UK), Edith Elkind (Nanyang Technological University, Singapore), and Lirong Xia (Harvard).
• The Fourth Workshop on Cooperative Games in Multiagent Systems (CoopMAS-2014)
  (May 6th 2013, St Paul, Minnesota)
  Organized by Haris Aziz (NICTA), Edith Elkind (Nanyang Technological University, Singapore), and Michael Wooldridge (Oxford).
• The Fifth Workshop on Cooperative Games in Multiagent Systems (CoopMAS-2014) (May 5th-6th 2014, Paris, France)
  Organized by Georgios Chalkiadakis (Technical University of Crete, Greece), Edith Elkind ( University of Oxford, UK), Reshef Meir (Harvard University, USA).
• The Sixth Workshop on Cooperative Games in Multiagent Systems (CoopMAS-2015)
  (May 4th-5th 2015, Istanbul, Turkey)
  Organized by Georgios Chalkiadakis (Technical University of Crete, Greece), Reshef Meir (Harvard University, USA), Tomasz Michalak ( University of Oxford, UK).