Board of Directors

Mr. McKim, who founded Clean Harbors in 1980, became Executive Chairman and Chief Technology Officer of the Company in March 2023 as part of a planned transition. Before that, he served as Chairman of the Board of Directors and Chief Executive Officer of the Company since its inception and President from September 2016 to March 2023. Mr. McKim received an MBA from Northeastern University's D'Amore - McKim School of Business. He serves on Northeastern University's Board of Trustees and received an honorary doctorate from the Massachusetts Maritime Academy. He also serves on South Shore Health's Board of Directors. Mr. McKim is recognized as an industry leader with more than four decades in the environmental services business. ... 

Edward G. Galante, an independent Director of the Company since 2010, retired in 2006 after more than 30 years with Exxon Mobil Corporation. Prior to his retirement, he most recently served as a Senior Vice President and member of the Management Committee. His principal responsibilities included the worldwide Downstream business: Refining & Supply, Fuels Marketing, Lubricants and Specialties and Research and Engineering. He also was responsible for Exxon Mobil's corporate Public Affairs and Safety, Health and Environmental activities. Mr. Galante received his Bachelor of Science degree in civil engineering from Northeastern University. He serves as a Vice Chairman of Northeastern's Board of Trustees. He is a director of Celanese Corporation (NYSE: CE), where he chairs the compensation and management development committees and serves on the environmental, health, safety, quality and public policy committee, and Marathon Petroleum Corporation (NYSE: MPC), where he chairs the compensation and organizational development committee and serves on the sustainability committee. Within the past five years, Mr. Galante was also a director of Linde plc (NYSE:LIN), where he chaired the compensation and executive development committee and sat on the audit committee. Mr. Galante is also a director of the United Way Foundation of Metropolitan Dallas and of ArtisNaples. In addition to his extensive experience with Exxon Mobil in the oil and gas industry, Mr. Galante's services as a director and board committee member of three other major public corporations give him valuable insight into corporate governance, public affairs, environmental, compensation and audit matters. ... 

Mr. Battles was appointed in March 2023 as the Company’s Co-Chief Executive Officer and Co-President after serving for seven years as the Company’s Executive Vice President and Chief Financial Officer. He joined Clean Harbors as Senior Vice President, Corporate Controller and Chief Accounting Officer in September 2013. Prior to Clean Harbors, Mr. Battles served in a variety of senior financial positions at PerkinElmer Inc., a global leader in human and environmental health. His roles included financial leadership of the Human Health business, Chief Accounting Officer, and acting Chief Financial Officer. Prior to PerkinElmer, Mr. Battles worked for Deloitte & Touche LLP in the firm's audit function including an assignment in the firm's National Office in accounting research. Mr. Battles is a member of the board of directors of Casella Waste Systems, Inc. (NASDAQ: CWST), a regional solid waste, recycling and resource management service company, and serves on its audit and nominating and ESG committees. Mr. Battles holds a BS in Business Administration with a concentration in Accounting from the University of Vermont and is a certified public accountant. He also has a Certificate in Cybersecurity Oversight issued by the National Association of Corporate Directors and Carnegie Mellon University. ... 

Mr. Gerstenberg was named Co-Chief Executive Officer and Co-President in March 2023, after serving for eight years as the Company’s Chief Operating Officer. From 2010 to 2015 Mr. Gerstenberg held positions of increasing responsibility including President of the Environmental, Industrial & Field Services business, Vice President of Disposal Services and Executive Vice President, Environmental Services. In that role, he oversaw Field Services, Technical Services, Disposal Facilities, Transportation and Sales for the Environmental Group. Mr. Gerstenberg joined Clean Harbors in 1989, serving in a variety of positions including General Manager of the Natick, Baltimore, and Chicago facilities. He stepped away from the organization briefly in 1997, serving as Vice President of Operations for privately owned Pollution Control Industries before returning to Clean Harbors in 1999. Mr. Gerstenberg received a Bachelor of Science degree in Engineering from Syracuse University. ... 

Karyn Polito, an independent Director of the Company since 2023, is the Principal of Polito Development Corporation, a commercial and industrial real estate development firm. She served as Lieutenant Governor of Massachusetts from 2015 to 2023, alongside Governor Charlie Baker. Prior to her election as Lieutenant Governor, Ms. Polito was a member of the Massachusetts House of Representatives and a Partner at Milton, Laurence & Dixon, LLP. She serves as an Independent Director for Berkshire Hills Bancorp, Inc (NYSE:BHLB), where she serves on Risk Management, Capital & Compliance Committee as well as the Corporate Responsibility & Culture Committee. She holds a Bachelor of Science from Boston College and a Juris Doctor from New England Law. Ms. Polito brings to the Board a wealth of experience across the public and private sectors, a proven record on environmental issues, and will provide valuable insights in key areas including government, regulatory and public affairs. ... 

Mr. Preston is the Managing Partner of TEM Capital, a private equity investment company, and is currently a director of numerous private companies. From 1992 through 1995, he served as Director of Technology Development at the Massachusetts Institute of Technology (“MIT”). Prior to that he was the Director of the MIT Technology Licensing Office where he was responsible for the commercialization of intellectual property developed at MIT. Some of Mr. Preston's prior appointments include director or advisory positions for the Governor of Massachusetts, the U.S. Department of Defense, the National Aeronautics and Space Administration, and the National Technology Board of Singapore. He holds a BS in Physics from the University of Wisconsin and an MBA from Northwestern University. Mr. Preston brings to the Board his considerable experience in technology development, corporate growth and corporate governance. Mr. Preston also has a Certificate in Cybersecurity Oversight issued by the National Association of Corporate Directors and Carnegie Mellon University. ... 

Ms. Quirk, an independent Director of the Company since 2022, is the former Executive Vice President, Chief Human Resources and Citizenship Officer at State Street Corporation. Ms. Quirk retired from State Street in 2017 where she worked for 15 years, the last seven as a member of the company’s senior-most strategy and policy making group. As Chief Human Resources and Citizenship Officer, she was responsible for all aspects of human resources and corporate citizenship, leading a global team of more than 500 people. Prior to State Street, Ms. Quirk spent two decades in human resources and business planning roles at FleetBoston Financial, Liberty Financial Companies and Boston Financial Data Services, Inc. Ms. Quirk is an independent non-executive director of Janus Henderson Group plc (NYSE/ASX: JHG), where she is the chair of the compensation committee. She is also an advisor for King Boston, a not-for-profit organization focused on equity and economic justice. She previously served as a member of the compliance committee of Wynn Resorts, Limited (NASDAQ: WYNN), responsible for ensuring compliance with federal, state, local, and gaming laws. She also previously served on the Legg Mason Board of Directors as a member of the finance committee and the nominating and governance committees, as well as chairperson of the compensation committee. She also served on a special committee of the board that oversaw the sale of Legg Mason. She holds a bachelor’s degree in Communications from the University of New Hampshire. Ms. Quirk brings valuable board-level experience advising on corporate strategy, mergers and acquisitions, and company growth objectives. Her background as a senior human resources executive fully aligns with the Company’s initiatives around recruiting, retention, diversity and inclusion, and employee engagement. ... 

Marcy Reed, an independent Director of the Company since 2021, worked for more than 30 years at National Grid and its predecessor companies before retiring in early 2021. She retired as President of National Grid Massachusetts and Executive Vice President U.S. Energy Policy and Social Impact, a role she held for the past decade. Previously, she was Senior Vice President Finance and Senior Vice President Corporate Affairs at the company. In February 2022, Ms. Reed joined the board of Edison International (NYSE:EIX), the parent company of Southern California Edison. She serves as an Independent Director for Blue Cross Blue Shield of Massachusetts and is on the board of Northeastern University, chairing the Audit Committees of both entities. She also is a board member of Qualus, a private equity-backed electric power engineering company. Ms. Reed previously served as board chair of The Partnership, Inc., an organization working to build racially diverse leadership pipelines. She earned an A.B. in Economics from Dartmouth and an M.S. in Accounting from Northeastern University, and holds Executive Education Certificates from Wharton and INSEAD. She has been a certified public accountant since 1988. She has been recognized with numerous leadership and philanthropic awards, including being named three times as one of Boston’s Top 100 Leaders. Ms. Reed brings to the Board a deep experience in the areas of finance, energy policy and sustainability. ... 

Andrea Robertson, an independent Director of the Company since 2004, was the Group Executive, Corporate Treasurer of MasterCard Worldwide from 2003 to June 2010. From 1996 to 2003, she held financial management positions with RR Donnelley & Sons Company, and from 1984 to 1996 with International Business Machines Corporation. From 1979 to 1982, she was an auditor with Coopers & Lybrand. She holds a BS in Accounting from Merrimack College and an MBA in Finance/Management Information Systems from the University of Chicago. She is a member of the Board of Directors of Prevent Child Abuse America. A certified public accountant, Ms. Robertson brings to the Board considerable knowledge and experience in finance and risk management from her training as an accountant and her work in financial management positions. ... 

Lauren C. States, age 61, an independent Director of the Company since March 2016, retired in 2014 after more than 36 years with IBM Corporation. Prior to her retirement, she served as Vice President, Strategy and Transformation for IBM’s Software Group and was a member of the Growth and Transformation senior leadership team. Her principal responsibilities included leading the global sales force strategy and go-to-market for IBM’s multi-billion dollar software business. From 2008 to 2013, she was a leader in the company’s transformation to cloud computing and served as Chief Technology Officer in the corporate strategy function. Over her career, she has served in a broad variety of roles including technology, transformation, sales and talent development. Ms. States received her Bachelor of Science in Economics from The Wharton School of the University of Pennsylvania. In 2015, she completed a Fellowship with Harvard University’s Advanced Leadership Initiative. She is a director of Webster Financial Corporation (NYSE:WBS) and NetBase Quid, a privately held company and, through early 2023, served on the board of Diebold Nixdorf Inc. (NYSE:DBD). Ms. States is devoted to community service and serves on the boards of Code Nation and the New England Science and Sailing Foundation, equipping students in under-resourced communities to pursue careers in science and technology. She is also a Trustee for International House, New York. Ms. States has a CERT Certificate in Cybersecurity Oversight, issued by the NACD and Carnegie Mellon University. Ms. States brings to the Board her considerable experience in sales, technology and strategy. ... 

Shelley Stewart, Jr., an independent Director of the Company since 2022, is Managing Partner at Bottom Line Advisory LLC. Mr. Stewart left DuPont in 2018 after six years as Chief Procurement Officer where he led procurement, global sourcing and logistics, as well as real estate and facility services. Prior to joining DuPont in 2012, he spent nearly a decade at Tyco International, where he was Senior Vice President of Operational Excellence and Chief Procurement Officer. Previously, he held senior executive supply chain positions at Raytheon and Invensys PLC. He also spent 19 years at United Technologies Corporation, where he held numerous positions focused on global sourcing. Mr. Stewart serves on the boards of Otis Worldwide (NYSE:OTIS) and Kontoor Brands (NYSE:KTB), where he sits on the Audit and Nominating and Governance committees. He also serves on the Board of Trustees of Howard University and the Board of Governors for the University of New Haven. He previously served on the board of directors for the Institute for Supply Management. Mr. Stewart holds a bachelor’s degree and master’s degree in Criminal Justice from Northeastern University, and received his MBA from the University of New Haven. He brings to the Board significant expertise in the areas of logistics, supply chain management and operational excellence. His strategic insights, combined with his chemical industry background, will be a significant asset to Clean Harbors as the Company continues to execute its growth strategy. ... 

John R. Welch, an independent Director of the Company since 2014, was until June 2015 a Director (Senior Partner) in the Boston office of McKinsey & Company, an international business consulting firm, and is now a Senior Partner Emeritus. While at McKinsey, he served clients across a variety of industries for 29 years. From 2007 to 2012, he was the Managing Partner of McKinsey’s New England Practice, and from 2001 to 2005 he led the firm’s Strategy Practice. He has written several articles on mergers and acquisitions and capital markets approach to strategy. He was a leader of McKinsey’s internal training program throughout his career and serves on the McKinsey Committee which evaluates and elects partners. Prior to joining McKinsey, Mr. Welch was a project engineer with Hooker Chemical and with Caltex Petroleum and worked in the Municipal Lending Group at Bank of America. Mr. Walsh is also now an adjunct teacher at the Carroll School of Management at Boston College. He holds an MBA from the University of Chicago, where he has completed all his coursework towards a PhD in Finance, and BS and MS degrees in chemical engineering from Cornell University. Mr. Welch brings to the Board his considerable experience in business consulting, operations and finance. ... 

Robert Willett, an independent Director of the Company since 2019, is the President and Chief Executive Officer of Cognex Corporation (NASDAQ: CGNX). Mr. Willett oversees all aspects of strategy and operations for Cognex Corporation. Mr. Willett joined Cognex in 2008 from Danaher Corporation (NYSE:DHR), a diversified manufacturer of industrial controls and technologies, where he served as Vice President of Business Development and Innovation for the company's Product Identification business group. Prior to that Mr. Willett was President of Videojet Technologies, a leader in coding and marking products, which is a subsidiary of Danaher. Mr. Willett also served as Chief Executive Officer of Willett International Ltd., a $125 million privately owned coding company with 30 wholly owned sales companies around the world, which he sold to Danaher in 2003 and which was merged with Videojet. He holds a B.A. from Brown University and an M.B.A. from Yale University. Mr. Willett brings to the Board deep industrial and technology knowledge, leadership development expertise and public company experience. ...