Grounded on social identity theory, we explore the identities and actions of 41 angel investors who invest in early-stage companies in the field of ICT. Our study reveals the existence of four pure types of angel investor identities and suggests how these identities shape their investment behavior and consequent exchange of resources with investees. We summarize our results in a typology that sheds light on the diverse meanings investors associate with angel investing and advance understanding regarding why fundamental differences in angel investment decisions and actions exist among investors.