Process Science is the flagship journal of the Process Science Association. It is a joint effort of the steering committee of the BPM Conference and the IEEE Task Force on Process Mining. The aim of the journal is to publish high-quality scientific contributions that advance our understanding of processes and corresponding information systems. The journal is unique in its scope of equally embracing contributions that build on 1) formal and theoretical analysis, 2) engineering research, or 3) empirical research methods. It integrates technical and socio-technical discourses in data science, computer science and information systems research, as well as related research in management science, operations research, organization studies, psychology, and behavioural science. It is the mission of the journal to provide a service to the community and to authors. We offer a high-quality and well-managed single-blind peer review process with quick cycle times. Our ambition is to complete the first review round within one month. To this end, we work with bimonthly submission deadlines. Furthermore, we operate as a fully open access journal with transparent fees and opportunities for waivers.