Foundation Professor Stuart Bretschneider and co-founder of Arizona State University’s Sustainable Purchasing Research Initiative (SPRI) retired in June 2022. Prof. Bretschneider was instrumental to the creation of SPRI, its community, and the students he advised. His numerous publications and the many students he graduated illustrate his deep commitment to research and student mentorship, and his fundamental desire to improve how public organizations function. We are fortunate, indeed, that Prof. Bretschneider was part of SPRI’s day-to-day activities. We are also grateful that he will continue to engage with SPRI faculty and students on their research, all while taking time for things he enjoys most!