The goal of the study is to identify the relationship between the top managers’ biographical data and their managerial readiness. The authors analyzed the diagnostics results of the management reserves participants. As a diagnostic tool the authors used biographical questions of the “Questionnaire of managerial potential” methodology, specially created “Personally-professional biographical questionnaire” methodology, as well as a number of other questioning and projective methods. The study describes eight typical profiles of managerial readiness and eight typical groups of top managers in terms of the “fundamental components” of managerial readiness. The study identifies certain trends in the connection of the managerial readiness profile with events related to the parental family of the research participants, as well as with the events related to their school life. Identification of the relationship between top managers’ biographical data and the profile of their managerial readiness improve scientific knowledge about the factors and predictors of the development of the managerial potential of leaders. Besides, it makes possible to improve the selection processes for candidates for leadership positions and support the participants’ personal, professional and career development in managerial personnel reserves.