GA4GH hosted a symposium in the Medical Sciences and Public Health track of the 2017 Annual Meeting of the American Association for the Advancement of Science (AAAS). The session, “Genomic and Health Data: Global Sharing and Local Governance,” considered how funding agencies, journals, regulators, health payers, and patient groups are moving to influence data-sharing policy, while simultaneously calibrating the notion of who “owns” genomic data.