In the intervening years, the materiality matrix underwent a light review, based on exclusively logging and assessing internally significant aspects emerging from stakeholder interactions to determine how the ranking of the issues within the matrix might change. matrix, as envisaged in the SEA Board’s resolution of January 25, 2018, which was organized along the following lines: ■ Mapping of material topics; ■ Approval of the mapping by top management; ■ Assessment and prioritization of the topics by both stakeholders and SEA management (in parallel); ■ Definition of the draft materiality matrix and its dissemination with the Sustainability Committee and the Control, Risks and Sustainability Committee; ■ Approval of the materiality matrix by the SEA Board of Directors.