We are pleased to report that Thomson Reuters announced the 2015 impact factor for ACS Sustainable Chemistry & Engineering as 5.267. This impact factor is calculated as the average number of times that articles published in Volumes 1 and 2 (articles published in 2013–2014) were cited in journals tracked by Thomson Reuters during 2015. We thank our many worldwide authors and reviewers for their valuable contributions to the publishing process. We also thank members of the editorial staff and the Editorial Advisory Board for their continued guidance and support during the journal’s foundational years.