This study provides a fine-grained analysis of the decision-making process and criteria underling the evaluation and selection of nascent corporate ventures. By integrating a small sample case-based analysis and the examination of a longitudinal dataset comprising 14 years of archival data, it explores the selection and funding process of early-stage entrepreneurial initiatives supported by the internal corporate venture unit of a major energy company. Its findings extend prior conceptualizations of the internal venture selection process, uncovering differences in the relevance of the criteria used to evaluate ventures at different stages.