2024 SUSTAINABILITY REPORT 1. Introduction 2. Sustainability at Cogeco 3. Implementing strong governance practices 4. Managing risks and opportunities 5. Our strategy for greater impact 6. Transparency Table of Contents SECTION 1 Introduction About Cogeco About this report 06 Message from our President and CEO SECTION 2 Sustainability at Cogeco Sustainability strategy overview 2024 Sustainability highlights 10 Stakeholder engagement and key sustainability topics SECTION 3 Implementing strong governance practices Sustainability governance Ethical business practices Compliance and tax strategy SECTION 4 Managing risks and opportunities How we identify and monitor risks and opportunities Sustainability risks and opportunities SECTION 5 Our strategy for greater impact 21 Climate Waste management Data security and privacy Customer experience Network investments Digital inclusion Human capital management Community engagement and philanthropy Sustainable procurement SECTION 6 Transparency 37 Global Reporting Initiative (GRI) index 43 Sustainability Accounting Standards Board (SASB) index 45 Task Force on Climate-related Disclosures (TCFD) recommendations 2 • COGECO 2024 SUSTAINABILITY REPORT 1. Introduction 2. Sustainability at Cogeco 3. Implementing strong governance practices 4. Managing risks and opportunities 5. Our strategy for greater impact 6. Transparency SECTION 1 Introduction In this section 04 About Cogeco 05 About this report 06 Message from our President and CEO 1. Introduction 2. Sustainability at Cogeco 3. Implementing strong governance practices 4. Managing risks and opportunities 5. Our strategy for greater impact 6. Transparency About Cogeco Cogeco Inc. is a North American leader in the telecommunications and media sectors. Through Cogeco Communications Inc., we provide world-class Internet, video and wireline phone services to 1.6 million residential and business subscribers in Canada and thirteen states in the United States. We also offer wireless services in most of our U.S. operating territory. Through Cogeco Media, we operate 21 radio stations in Canada, primarily in the province of Québec, as well as a news agency. We take pride in our strong presence in the communities we serve and in our commitment to a sustainable future. Both Cogeco Inc.'s and Cogeco Communications Inc.'s subordinate voting shares are listed on the Toronto Stock Exchange (TSX: CGO and CCA). To enhance clarity, the use of the term "Cogeco" or "the Corporation" in this document refers to both Cogeco Inc. and Cogeco Communications Inc. and their respective subsidiaries. Cogeco is committed to delivering sound business performance, providing exceptional customer experience, and driving forward with our vision of delivering the best and most sustainable value to our customers, communities, colleagues, suppliers and shareholders. For more information about our business performance and sustainable growth model, please refer to our 2024 Annual Report . Annual revenue Employees Customers Radio stations $3.1 billion 4,900 1.6 million 21 for fiscal 2024 in North America in fiscal 2024 residential and business subscribers Cogeco Media 4 • COGECO 2024 SUSTAINABILITY REPORT 1. Introduction 2. Sustainability at Cogeco 3. Implementing strong governance practices 4. Managing risks and opportunities 5. Our strategy for greater impact 6. Transparency About this report Our 2024 Sustainability Report provides a comprehensive overview of our sustainability strategy, goals and the progress we have made over the years. This is Cogeco's 8 th Sustainability Report. In this report, we are pleased to offer readers an insight into how we leverage globally recognized frameworks and strategies to benefit our business, communities, and colleagues. Previous reports are available in the Sustainability Practices section of our website . In addition to this report, we publish our Sustainability Data Supplement , which provides detailed metrics and targets to offer insights into our fiscal 2024 performance and is also available on our website. Scope Unless otherwise stated, our 2024 Sustainability Report covers fiscal year 2024, which ended on August 31, 2024, and includes information on Cogeco Inc. and Cogeco Communications Inc. and their respective subsidiaries. This report was published in March of 2025. All financial information is reported in Canadian dollars. Sustainability frameworks This report is prepared in alignment with Global Reporting Initiative (GRI) Standards, Task Force on Climate-related Financial Disclosures (TCFD) recommendations, and Sustainability Accounting Standards Board (SASB) Telecommunication Services Industry Standards as outlined in the Transparency section of this report. Forward-looking statements The 2024 Sustainability Report includes "forward- looking information" and "forward-looking statements" within the meaning of applicable securities laws (collectively, "forward-looking information"). Forward- looking information may contain statements with words or headings such as "commitment", "anticipate", "believe", "expect", "plan", "will", "must", "goal", "target", "should" or similar words suggesting future outcomes. Forward-looking information involves known and unknown risks and uncertainties and other factors that may cause the actual results to differ materially from the assumptions, estimates or expectations reflected or contained in the forward-looking information, and may be affected by a number of factors, many of which are beyond the Corporation's control. The uncertainties and main risk factors that could influence actual results are described in the 'Uncertainties and main risk factors' sections of the fiscal 2024 Annual Report. These factors are not intended to represent a complete list of the factors that could affect Cogeco and future events and results may vary significantly from what we currently foresee. Forward-looking statements contained in this report represent our expectations as of the date of this report and are subject to change after such date. While we may elect to do so, we are under no obligation and expressly disclaim any such obligation and do not undertake to update or alter this information at any particular time, whether as a result of new information, future events or otherwise, except as required by law. All of the forward-looking information in this Sustainability Report is qualified by the cautionary statements herein. Related disclosures 2024 Annual Report 2024 Information Circular Sustainability Data Supplement 2023 Statement Against Modern Slavery Report Sustainability Policy Code of Ethics Supplier Code of Conduct If you have any comments or questions, please contact us at: sustainability@cogeco.com 5 • COGECO 2024 SUSTAINABILITY REPORT 1. Introduction 2. Sustainability at Cogeco 3. Implementing strong governance practices 4. Managing risks and opportunities 5. Our strategy for greater impact 6. Transparency Message from our President and CEO At Cogeco, we feel a deep sense of responsibility towards our stakeholders. We strive to build a more sustainable and inclusive future and deliver on our sustainability strategy, which focuses on reducing our environmental footprint, creating a positive social impact, and ensuring transparency. In fiscal 2024, we continued to make significant strides in our sustainability journey. We were honoured to be recognized as one of the 100 most sustainable companies in the world by Corporate Knights for the sixth consecutive year. This recognition is a testament to our sustainability strategy and the value we place on the communities our employees and customers call home. Environmental leadership Climate change is a pressing global issue, and we are determined to play our part in mitigating its impact. We have set targets to reduce our greenhouse gas (GHG) emissions and were the first Canadian telecommunications company to have received validation from the Science Based Targets initiative (SBTi) for our net-zero emissions target. By investing in renewable energy, optimizing energy efficiency, and progressively electrifying our fleet, we are taking concrete steps to reduce our carbon footprint. Creating a positive social impact We believe that everyone deserves access to the digital world. That's why we are investing in expanding our fibre- powered network to reach unserved and underserved areas. By bridging the digital divide, we are empowering individuals and communities, and fostering economic growth. Our commitment to social responsibility extends beyond our core business. We are dedicated to supporting the communities where we operate through philanthropic initiatives and partnerships with local organizations. We are also committed to creating a diverse and inclusive workplace, where everyone feels valued and empowered. Transparency and accountability Good governance is the foundation of our sustainability efforts. Our Board of Directors continues to actively oversee our sustainability strategy, ensuring that it aligns with our long-term goals and values. We also continue to transparently disclose our sustainability performance, adhering to globally recognized frameworks and standards, and holding ourselves accountable to our stakeholders. As we look to the future, we remain committed to our sustainability journey. We will continue to innovate, collaborate, and adapt to the evolving challenges and opportunities of the 21 st century. By working together, we can build a more sustainable, equitable, and prosperous future for all. FRÉDÉRIC PERRON President & Chief Executive Officer 6 • COGECO 2024 SUSTAINABILITY REPORT 1. Introduction 2. Sustainability at Cogeco 3. Implementing strong governance practices 4. Managing risks and opportunities 5. Our strategy for greater impact 6. Transparency SECTION 2 Sustainability at Cogeco In this section Sustainability strategy overview 2024 Sustainability highlights 10 Stakeholder engagement and key sustainability top