Philosophical reflection on transparency, including group transparency, is beginning to gain steam. This paper contributes to this work by developing a conceptualization of transparency as an intellectual character trait that groups can possess, and by presenting a novel argument for thinking that such transparency should be understood along non-summativist lines. According to the account offered, a group’s being intellectually transparent consists in the group’s tending to attend well to its perspective and to share its perspective faithfully with others in order (...) to promote their epistemic goods. It is argued that this kind of group intellectual transparency, pace summativism, does not always consist merely in group members possessing intellectual transparency. The argument given for this conclusion works differently from existing arguments for non-summativism about group character traits, and it retains persuasive power even if summativist views of most group phenomena, including other group character traits, are correct. (shrink)