On March 18th, 2026, our doctoral student Carl Hase successfully defended his thesis and obtained the doctoral degree. In his dissertation entitled “Strategic interaction, Spillovers, and Pass-through in Product Markets”, he investigates the role of spillovers in propagating economic shocks, highlighting the challenges that spillovers pose for policy evaluation. Carl joined the Goethe University Frankfurt in 2019 as a Ph.D. student at the GSEFM. He began his academic career in 2005 as a student at Western Washington University, USA, where he earned his bachelor’s degree in Economics in 2010. He subsequently completed his master’s degree in Economics at the Albert-Ludwigs-Universität Freiburg in 2019. He joined the Chair of Applied Statistics and Econometrics at Johannes Gutenberg University Mainz (JGU) as a research and teaching assistant in 2020. In April 2026, he will start working for Capgemini in Frankfurt. We wish him all the best for the future.