Vertical transfer from community college to a university offers a promising, although unrealized, pathway to diversify STEM disciplines. Studying how successful transfer-­receiving universities support STEM transfer students can offer insights into the institutional practices that promote transfer student retention and success. Using institutional data is crucial to identify vulnerable populations within the STEM transfer population and to design necessary changes in practice or policy, especially at the department level. Providing discipline-specific multidimensional support throughout STEM transfer students' undergraduate careers can improve transfer rates and retention and ease students' transition to the univer­sity. Although universities have developed promising practices and programs, support for STEM transfer students is not systematically available and should be more targeted, intentional, and comprehensive throughout the transfer and adjustment process.