Corporate spin-ins are acquisitions in which the acquired companies were founded by former employees of the acquiring firm. Since a large majority of acquisitions fail to achieve the synergies necessary to justify acquisition premiums, spin-ins may offer an opportunity for acquirers to reduce costly information asymmetries and generate superior outcomes by leveraging prior employment ties. However, the return of ex-employees who successfully cashed in on their innovations is not without complications. This paper situates spin-ins theoretically within the corporate entrepreneurship and M&A literatures, and empirically examines a proposed framework through a pair-wise comparison of acquisitions, both with and without prior employment ties.