In 2019, RPM partnered with external consultants to conduct a materiality* assessment identifying topics most significant to our business. With involvement from internal and external stakeholders, we prioritized areas where we can make the biggest impact — and those that could have the greatest impact on us. Steps included:

Topic Identification: We identified a population of potentially material* topics by evaluating sector-specific relevance and mapping to the Global Reporting Initiative (GRI) Standards and the Sustainability Accounting Standards Board (SASB). We assessed our internal strategic planning, emerging trends, peer performance and thought leadership to determine material topics for RPM and its stakeholders.

Topic Prioritization: After identifying potentially material* topics, we consulted internal and external stakeholders — as well as numerous internal and external sources — to collect perspectives regarding our related risks, opportunities and impacts. We consolidated the findings from stakeholders to determine the relative importance of each topic.

Validation: After prioritizing the topics identified, we held a validation session with key RPM leaders. During this exercise, leaders reviewed the topic prioritization and provided additional feedback.

As outlined by the GRI Standards, we identified RPM’s material* topics by considering the two dimensions of
the materiality* principle:

• The significance of our organization’s economic, environmental and social impacts; and
• Our substantive influence on the assessments and decisions of stakeholders.

While all identified topics are important to our company and warrant effective management, this report
focuses on those topics identified that are most material* to our business.