Professor Matthias Köppe's award is for "incredible and consistent contributions to the core Sage library, especially the modularization effort, which has the potential to massively extend the sustainability and broad impact of the Sage Python codebase."
Travis Scrimshaw received his Ph.D. from UC Davis Mathematics in 2015 under the direction of Prof. Anne Schilling. His award is for "major contributions to the core library, his excellent review of trac tickets, and his major long-term contributions to Sage's participation in Google Summer of Code." Scrimshaw is currently faculty at Osaka Metropolitan University.
SageMath is an open-source mathematics software system developed since 2005.