Investor Presentaiton

2022 ESG REPORT HIGHLIGHTS F MASTERBRAND INTRODUCING MASTERBRAND The people of MasterBrand make a difference every day in meaningful ways. From caring about each other to bettering the communities in which we live, we are fostering a more sustainable world... The MasterBrand Way. CREATING A POSITIVE IMPACT At MasterBrand, we are proud of our 70-year heritage that has made us the number one North American residential cabinet manufacturer. We realize that with this status comes an even greater responsibility to do what is right for all stakeholders including customers, shareholders, dealers, supply chain partners, our team members and the communities in which we live and work. At MasterBrand, we have built a foundation of best practices for doing what is right for people and the environment. We believe that the high standards by which we conduct our business will help us to build on our strengths and continually improve how we measure and monitor our progress on our ESG-related initiatives. ENVIRONMENTAL A We follow sustainable wood sourcing practices We follow comprehensive supplier audit process SOCIAL GOVERNANCE We are committed to building an inclusive and diverse workforce ~1 We have sustained an OSHA recordable rate close to 1, less than 1/3 industry average 80% Over 80% of our board has prior board experience Our top leadership has comprehensive oversight of our organization •We implement programs to recycle and repurpose our wood waste ⚫80% of our 2022 hardwood spend derived from supply originating in North America •We are a National Forest Foundation partner and Yellowstone Forever supporter ⚫Our Always Aware safety program is focused on creating a Zero Injury culture MasterBrand is a leader in employee safety ⚫44% female executive management team, 33% female board, and over 37% POC associates in the U.S. •We support employee resource groups, flexible work environments, DE&I training and robust wellness benefits •We incorporate a separate Chairman and CEO structure • We maintain a Code of Business Conduct and Ethics and Supplier Code of Conduct •We have established dedicated Nominating, Environmental, Social, and Governance Committees 5

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