The present dissertation consists of three free-standing papers focused on the challenges that new start-up intermediaries face when spanning different social groups. The first paper advances theoretical understanding of the accelerator as an organizational form by drawing on a systematic literature review. We identify four distinct research orientations on the accelerator, highlight their common and divergent perspectives on the organizational features of the accelerator and synthesize them into an integrative typology. We contribute to our understanding of the theoretical underpinnings of the accelerator. The second paper inducts a model of a change in the instantiation of logics at an estranged hybrid by drawing on a longitudinal single case study analysis of a hybrid accelerator spanning the university, corporate, and professional software developer logics. We induct that internal agents enable such change by (1) renegotiating hybrid goals, (2) acquiring target logic, (3) acculturating into target logic and (4) embedding the new instantiation of logics. We further illuminate the different responses that individuals expose when engaging with changing institutional logics at estranged hybrids. The third paper explores how a concept gets translated into a recipient organization when the logics of the source context and the recipient context are mutually incompatible. Using ethnographic techniques, I conduct a longitudinal single case study analysis of a corporation that implemented the concept of impact investing. I find that the corporate motivations for implementing the concept gradually change as tensions surface, and that this leads the internal agents to morph the implemented concept from a strict coupling to a decoupling with the source concept.