In line with increasing calls for within-family analyses of monitoring processes, this study examined profiles of (combined) adolescent information management strategies and parent knowledge-gathering strategies among 174 families with middle adolescents (Mage _ 15.7 years; 164 mother–teen and 112 father–teen dyads). Three mother–adolescent profiles (open, intrusive, indirect) and two father–adolescent profiles (reserved, covert) emerged, with voluntary disclosure and snooping particularly differentiating profiles and fathers reporting gaining more knowledge from others. Profile membership was associated with adjustment and relationship quality both concurrently and over one year, controlling for prior levels. For mother–teen dyads, open communicators reported less behavioral control over time, intrusive communicators reported more negative interactions concurrently and greater depression and less maternal knowledge over time, and indirect communicators reported more problem behavior over time. For father–teen dyads, covert communicators reported more problem behavior concurrently and more negative interactions over time. Profile membership in mother-teen and father-teen dyads was not significantly associated. Results confirm the importance of disclosure and the problematic nature of snooping, while highlighting diverse ways that monitoring processes play out within families.