Students who transfer between institutions of higher education often experience a transfer penalty or a decrease in the odds of degree completion. While the transfer pathway is deemed a responsibility shared between 2- and 4-year institutions, failures in the transfer process are typically attributed to community colleges. The aim of this study was to examine the post-transfer experiences of STEM community college transfer students with particular emphasis placed on how institutional policies and practices at 4-year institutions contributed to the transfer penalty and poorer attainment rates of this population. Implications for future research and interventions are discussed.