This document summarizes a research paper that examines how companies use materiality matrices from an impression management perspective. The researchers analyzed 23 sustainability reports from European financial companies. They found that companies often lack disclosure around stakeholder identification and engagement methods. Most companies use colors and sizing to describe issues, but only half measure issue importance numerically. There is a tendency for reported issues to be highly aligned between business relevance and stakeholder relevance, raising potential selection bias concerns. Only 39% of companies explicitly approve their materiality matrix. The researchers believe some impression management techniques may be used but more research is needed.