AON 10-Q Quarter ended March 31, 2017

Mr. Plummer has been the Chair of our Audit Committee since May 2020. Each member of our Audit Committee satisfies the additional New York Stock Exchange independence standards for audit committees set forth in Section 10A of the Exchange Act. Our Board of Directors has determined that Audit Committee Chair Mr. Plummer, Mr. Chinn, Mr. Gluski, Ms. Holt, Ms. Mazzarella and Mr. Menke are audit committee financial experts as defined by the SEC based on a thorough review of their education and financial and public company experience. Additional information regarding our directors’ expertise and qualifications is available under “Election of Directors” below.

P osition and B usiness E xperience ​ Retired President and Chief Executive Officer — Proto Labs, Inc. (online and technology-enabled quick-turn manufacturer), served from 2014 to March 2021; also served as Director from 2014 – May 2021. Director of Piper Sandler Companies since September 2019. Director of A. O. Smith Corp. since April 2021. Q ualifications Victoria Holt joined Proto Labs, Inc. as President, Chief Executive Officer and a Director in 2014, retiring in 2021. With manufacturing facilities in five countries, Proto Labs is a leading e-commerce technology enabled digital manufacturer of custom prototypes and on-demand product parts. Ms. Holt began her career at Monsanto Company, where she held various assignments of increasing responsibility before moving to Solutia, Inc., a divestiture of the Monsanto Company’s chemical business, as Vice President and General Manager Performance Films. Ms. Holt later held various roles with PPG Industries, Inc., a leading coatings and specialty products company, including Senior Vice President of Glass and Fiber Glass. Ms. Holt then served as President and Chief Executive Officer of Spartech Corporation, a leading provider of plastic sheet, compounds and packaging products, until its sale to PolyOne in 2013. Ms. Holt has a diverse international business background serving a wide spectrum of customers looking for sustainable solutions across diverse end markets including plastics, materials, automotive, medical, aerospace, consumer and general industrial. Ms. Holt brings passion and extensive experience in the areas of sustainable innovation, environmental solutions, plastics operations and management and recycling to the Board. Ms. Holt’s proven success leading large global companies across a broad range of manufacturing, chemical and materials industries has demonstrated her deep understanding of risk management, operations, strategic planning and performance measurement. Ms. Holt provides tremendous insight into the areas of continuous improvement, use of data analytics, e-commerce, digitally connected operations and execution of our technology-led, sustainability-linked strategy to grow our business and mitigate climate risks. Ms. Holt has developed expertise in corporate governance as a member of the public company boards listed above, in addition to experience serving on private company boards, and she shares this expertise with the Company’s Board in her position as Chair of the Nominating and Governance Committee. Ms. Holt holds a bachelor’s degree in chemistry from Duke University and a master’s degree in business administration from Pace University. Ms. Holt has completed the National Association of Corporate Directors (NACD) Cyber Risk Oversight Program and earned the CERT Certificate in Cybersecurity Oversight.

P osition and B usiness E xperience President and Chief Executive Officer — Breakthru Beverage Group, LLC (private beverage wholesale distributor) since October 2021. Former President and Chief Executive Officer — National Restaurant Association, served from June 2020 to September 2021. Former President and Chief Executive Officer — Sysco Corporation (multinational wholesale restaurant distributor), served from 2018 to January 2020; also served as Executive Advisor from February 2020 to March 2020. Director of Sysco Corporation from 2018 to January 2020. Q ualifications Tom Bené has four decades of experience executing on strategic business priorities and delivering financial growth for large companies. Since 2021, he has served as President and Chief Executive Officer of Breakthru Beverage Group, where he is focused on leading the company through a period of growth and expansion by driving new capabilities and innovation. Prior to his current role, he held several operations and business leadership roles at Sysco Corporation, including serving as President, Chief Executive Officer, and Chairman. Before joining Sysco in 2013, Mr. Bené spent over 20 years at PepsiCo in numerous roles of increasing responsibility and scale. Mr. Bené has a proven track record of driving growth and modernizing business models throughout his career. Through his prior operations and management positions, Mr. Bené has gained valuable insight and knowledge in the areas of leadership and management development, corporate strategy development, merchandising, sales, marketing, revenue management, shared services and distribution and supply chain management. Mr. Bené shares his deep experience in logistics, as well as his focus on differentiation through the use of technology and providing outstanding customer service, to further our Company’s growth and optimization strategy. In addition, his dedication to employee development complements the Company’s People First commitment. Mr. Bené holds a bachelor of science degree in business administration from the University of Kansas.

P osition and B usiness E xperience Former Chief Executive Officer of Sabre Corporation (software and technology solutions provider to the travel industry) from 2016 to April 2023 and former President of Sabre Corporation from 2016 to December 2021. Executive Chairman of the Board of Sabre Corporation from April 2022 to April 2024; Director of Sabre Corporation from 2016 to April 2024. Director of JetBlue Airways Corp. since September 2024. Q ualifications Having recently served as Chief Executive Officer and Chair of the Board of Directors of Sabre Corporation, Sean Menke has experience heading a global network of development, sales, operations and corporate functions. In 2015, Mr. Menke joined Sabre as president of Sabre Travel Network, Sabre’s largest line of business. Under Mr. Menke’s leadership, Sabre won major new business opportunities, increased global market share, secured Sabre’s position as the leading global distribution system in North America, Latin America and Asia-Pacific, and led innovation to enable sales of more customized fares and ancillary products that help drive the changing travel industry landscape. Before joining Sabre, Mr. Menke spent more than 20 years in executive leadership roles in the airline industry. He served as Chief Executive Officer at Frontier Airlines and at Pinnacle Airlines, and he held senior level marketing, operations, customer experience, strategy, planning, sales, distribution and revenue management roles, including with Air Canada and Hawaiian Airlines. He also served as Executive Vice President at IHS Inc., a global information technology company. Mr. Menke is a proven transformation leader, and uses his extensive experience in technology and transportation operations to bring together strategy and data to address complex issues as a member of the Board. His expertise in logistics and commitment to delivering efficient, customer-focused innovation through imaginative technology-led solutions helps advance our strategy to differentiate our services. Mr. Menke has extensive executive experience in technology-driven companies. He is aware of the importance and challenges of cybersecurity and privacy issues, and he has experience overseeing risk mitigation and implementing systems to protect major corporations. Mr. Menke shares with the Board his experience in the areas of cyber intrusion response planning and remediation. Mr. Menke holds a bachelor’s degree in economics and aviation management from Ohio State University and a master’s degree in business administration from the University of Denver.

P osition and B usiness E xperience Retired U.S. Managing Director and U.S. Head of Electrification — ABB Ltd. (global technology company focused on electrification, robotics, power and automation), served from August 2019 to August 2020. Former President and Chief Executive Officer — Current, powered by GE (energy services and information technology subsidiary of General Electric subsequently acquired by private equity investors), served from 2015 to June 2019. Director of Harley-Davidson, Inc. since 2016. Director of Vontier Corporation since March 2021. Director of Flex Ltd. since September 2022. Q ualifications As U.S. Managing Director and U.S. Head of Electrification for ABB Ltd., Maryrose Sylvester was responsible for ABB’s largest geographical market and the implementation of operational innovations. Ms. Sylvester also championed the company’s diversity and inclusion efforts and accelerated ABB’s Encompass Diversity program. Prior to joining ABB Ltd., Ms. Sylvester spent more than 30 years at General Electric, where she held a number of leadership roles, including serving as President and Chief Executive Officer of each of GE Lighting, GE Intelligent Platforms, which focused on industrial automation, and GE Current, a digital power service business that delivers integrated energy systems. Ms. Sylvester was instrumental in launching the GE Women’s Network. Ms. Sylvester is a strategic, growth-oriented leader with a focus on the areas of technology, innovation and automation. Through her prior experience, Ms. Sylvester has developed expertise in delivering technology-enabled and energy-efficient sustainable solutions. Ms. Sylvester provides experience and extensive knowledge of product development, marketing, technology and supply chain strategy to the Board. Ms. Sylvester has in-depth expertise in the area of improving energy efficiency in response to climate risk. Ms. Sylvester also shares insight from her prior experience to inform our strategy to improve processes and drive efficiency through automation. Ms. Sylvester is passionate about advancing diversity and inclusion and has expertise developing and driving such initiatives in the workplace. Ms. Sylvester also brings valuable governance experience from her service on the public company boards listed above. She holds a bachelor’s degree in procurement and production management from Bowling Green State University and a master’s degree in business administration from Cleveland State University.

P osition and B usiness E xperience Chairman, President and Chief Executive Officer — Graybar Electric Company, Inc. (distributor of electrical, communications and data networking products and provider of related supply chain management and logistics services) since 2013. Director of Cigna Corporation since 2018. Director of Core & Main since January 2019. Q ualifications Kathleen Mazzarella has served as President and Chief Executive Officer of Graybar Electric Company, Inc. since 2012, and as Chairman since 2013. During her more than 40-year tenure at Graybar, Ms. Mazzarella has held numerous executive-level positions in operations, sales, human resources, strategic planning and marketing, including Executive Vice President and Chief Operating Officer, Senior Vice President — Sales and Marketing and Senior Vice President — Human Resources and Strategic Planning. Ms. Mazzarella has been instrumental in developing and communicating Graybar’s commitment to sustainability initiatives. Graybar focuses on sustainability in the way it operates and in the innovative solutions it provides to its customers. The company offers energy-saving products, renewable energy solutions and supply chain services that support sustainable construction, renovation and maintenance of infrastructure and facilities. The company also invests in the communities it serves and emphasizes integrity, inclusion and opportunity for all employees. Ms. Mazzarella brings her deep and valuable experience leading a diverse range of business functions necessary for an employee-driven, customer-focused business, similar to our Company. Through her role as Chief Executive Officer and her service on the board of directors and key committees for other public companies, she has developed expertise in the evolving social and corporate governance landscape. In addition to her experience overseeing financial reporting and controls, technology systems and platforms, and other functional and operational areas, she has particular experience in the area of human capital management, including succession planning, diversity and inclusion initiatives, and oversight of corporate culture. Ms. Mazzarella also brings expertise in labor relations, public policy, operational innovation and strategic planning. Ms. Mazzarella holds an associate degree in telecommunications engineering, a bachelor’s degree in applied behavioral sciences from National Louis University, and a master’s degree in business administration from Webster University. In addition to the public company boards listed above, Ms. Mazzarella also serves on the board of the National Association of Wholesaler-Distributors (NAW) and previously served on the board of the NAW Institute for Distribution Excellence. Ms. Mazzarella previously served as Chairman of the Federal Reserve Bank of St. Louis, and she has experience serving on various organizational and charitable boards including the United Way of Greater St. Louis and the executive committee of Greater St. Louis, Inc.

P osition and B usiness E xperience President, Chief Executive Officer and Director — Waste Management, Inc. since 2016. Director of Caterpillar Inc. since March 2023. Q ualifications Jim Fish has served as our President and Chief Executive Officer and a Director since 2016. Over more than 20 years, Mr. Fish has held several key positions in our Company, including President and Chief Financial Officer; Senior Vice President — Eastern Group; Area Vice President for Pennsylvania and West Virginia; Market Area General Manager for Massachusetts and Rhode Island; Vice President of Price Management; and Director of Financial Planning and Analysis. Before joining our Company, Mr. Fish held finance and revenue management positions at Westex, a Yellow-Roadway subsidiary, Trans World Airlines, and America West Airlines. He began his professional career at KPMG Peat Marwick. Mr. Fish’s extensive leadership and operational experience, together with his tremendous understanding of the environmental services industry, are instrumental to the development and successful execution of our growth strategy to deliver stockholder value. Additionally, through his professional and educational experience, Mr. Fish has developed valuable expertise in accounting, external reporting, investor relations, human capital and performance management, and risk management. Mr. Fish oversees our Digital organization, and participates directly in matters related to cybersecurity and information security risk mitigation and response strategies. As North America’s largest comprehensive environmental solutions provider, sustainability is embedded in all aspects of our business. As our President and Chief Executive Officer, Mr. Fish has a thorough understanding of the risks and opportunities presented in the areas of sustainability and environmental protection. Mr. Fish is deeply involved in our efforts to mitigate such risks and capitalize on such opportunities in order to deliver on our brand promise, ALWAYS WORKING FOR A SUSTAINABLE TOMORROW®. Mr. Fish also champions the importance of our people-first commitment and the necessity of creating a culture that truly puts the needs of WM employees first. As part of that people-first culture, Mr. Fish has been actively involved in developing initiatives to promote diversity and inclusion throughout the Company’s population of more than 60,000 employees. Mr. Fish earned a bachelor’s degree in accounting from Arizona State University and a master’s degree in business administration, with emphasis on finance, from the University of Chicago. In addition to the public company board service listed above, Mr. Fish currently serves on the board of the Greater Houston Partnership.

P osition and B usiness E xperience Retired President and Chief Executive Officer — Chevron Phillips Chemical Company LLC, or CPChem, (global petrochemical joint venture of Chevron USA Inc. and Philips 66 Company), served from April 2021 to March 2024; has continued serving as Executive Advisor and Consultant to CPChem since March 2024. Director of CPChem from November 2020 to March 2024. Also served as President, Chemicals for Chevron Corporation (multinational energy corporation) from May 2020 to March 2021 and President, Chevron Oronite (global lubricant and fuel additives business) for Chevron Corporation from 2018 to April 2020. Director of Celanese Corporation since September 2024. Q ualifications Before his retirement in 2024 from the positions of President, Chief Executive Officer and a Director of CPChem, Bruce Chinn focused on leading the company through a period of sustainable growth. Mr. Chinn has over 40 years of experience driving operational, safety, and financial results. Previously, he held several operations and business roles at Chevron Corporation, leading large, diverse organizations. In these roles, Mr. Chinn focused on performance, partnership, and safety, while striving for continued success in the business and community. Mr. Chinn began his career at DuPont, where he held positions of increasing responsibility in manufacturing, technical, commercial and business leadership at the U.S. and international level. Mr. Chinn brings extensive knowledge of circular solutions and renewable energy that is aligned with our Company’s strategic focus on making sustainability growth investments in our recycling and renewable energy businesses. His operations leadership expertise bolsters our continued efforts to drive operating efficiencies, enhance our safety culture and differentiate our service offerings. Mr. Chinn’s broad and expansive dedication to operating excellence and developing strong corporate culture provides valuable perspective to the Board, and his experience allows him to share specific insight into focus areas such as renewable energy transition, environmental regulation and compliance, international exposure and risk management. Mr. Chinn serves on the American Institute of Chemical Engineers Foundation Board of Trustees, and he serves as a board director for the Texas A&M University Association of Former Students. Mr. Chinn holds a bachelor of science degree in chemical engineering from Texas A&M University.

P osition and B usiness E xperience President, Chief Executive Officer and Director — The AES Corporation (global energy company) since 2011. Q ualifications Andrés Gluski has served as President, Chief Executive Officer and a Director of The AES Corporation, a Fortune 500 global energy company, since 2011. Mr. Gluski began his tenure at AES in 2000 and previously served as Executive Vice President and Chief Operating Officer. Under his leadership, AES has become a leader in implementing clean technologies, including energy storage and renewable power. Through his professional experience, Mr. Gluski has extensive knowledge with respect to evaluating renewable energy strategies, and he has developed expertise in considering and evaluating climate-related risks and opportunities, which is directly applicable to our business and our sustainability growth strategy. Mr. Gluski also has experience in the development of sustainability and corporate social responsibility goals, as well as oversight of compliance programs. Prior to joining AES, Mr. Gluski served in a broad range of roles in the public and private sectors, including working as Executive Vice President of Corporate and Investment Banking in Grupo Santander. Mr. Gluski served as a member of the President’s Export Council from 2013 to 2016 and served as an expert witness at U.S. Congressional hearings on the subject of energy policy. He currently serves as Chairman of Council of the Americas and co-chair of the World Economic Forum’s Electricity Industry community. Mr. Gluski has also focused on shaping an innovative workplace at AES with a diverse and inclusive culture throughout the world. These efforts have given Mr. Gluski valuable expertise in the areas of human capital management, diversity and inclusion that he utilizes in his role as Chair of the Management Development & Compensation Committee of the Board. Mr. Gluski has been named amongst the 100 Most Influential Latinos by Latino Leaders Magazine. The depth and breadth of Mr. Gluski’s international business and finance background, and experience in managing growth opportunities while focusing on operational innovation, allow him to provide invaluable risk management, government affairs, public policy, public relations, communications and investor relations insight in his role as a member of the Board. Mr. Gluski holds a bachelor’s degree from Wake Forest University, as well as a master’s degree and a PhD in economics from the University of Virginia.