In the first session of the workshop we interactively developed an understanding of the benefits and potential drawbacks of open peer review (OPR). We discussed advantages and disadvantages from the perspectives of key stakeholders. Focusing on researchers again, we identifed gaps to be bridged and develop actions to be implemented in order to move towards more transparency. Elements of discussion includeed (1) traditional peer review & attributes of open peer review, (2) different perspectives on advantages and disadvantages of openness, and (3) practical implementation of OPR: requirements, actions, best practices & examples. The session engaged participants in small group exercises to gather information and viewpoints on the different degrees on openness in the review process.