The fourth IEEE Global Conference on Signal and Information Processing (GlobalSIP) will be held in Greater Washington, DC, USA on December 7–9, 2016. GlobalSIP has rapidly assumed flagship status within the IEEE Signal Processing Society. It focuses on signal and information processing and up-and-coming signal processing themes. The conference aims to feature world-class speakers, tutorials, exhibits, and oral and poster sessions. GlobalSIP is comprised of co-located symposia selected based on responses to the Call for Symposium Proposals. Topics include but are not limited to: