Research question: What are the motives and experiences of donor -conceived persons (DCP) who search for and receive information about their identity -release sperm donor? Design: A qualitative interview study with 29 individuals (21 women, seven men, one non -binary) who were consecutively recruited after having requested information about their sperm donor at five Swedish University hospitals. All participants were conceived after donor insemination to heterosexual couples within an identity -release donation programme. Individual semistructured interviews were conducted face-to-face or via telephone between September 2016 and November 2019, and transcribed audio recordings were analysed using reflexive thematic analysis. Results: The motives and experiences of DCP were described in two themes. The theme 'donor information can fill different needs' describes that varying motives, thoughts and feelings are related to searching for and obtaining donor information. Motives ranged from curiosity and a desire for agency over one's conception to hopes of finding a new father. The theme 'navigating donor information in a relational context' describes the process of obtaining donor information as interpersonal, highlighting that the DCP needs to balance the interests of different stakeholders, and that obtaining donor information can challenge the relationship quality with the father. Conclusions: Obtaining the donor's identity has the potential to affect the understanding of DCP of themselves, and to influence relationships within their family in unexpected and challenging ways. Therefore, adequate resources should be allocated to support the growing number of families after identity -release donation.