Ameresco AMRC

George P. Sakellaris, age 78, who is our principal stockholder, has served as chairman of our board of directors and our president and chief executive officer since founding Ameresco in 2000. Mr. Sakellaris previously founded Noresco in 1989 and served as its president and chief executive officer until 2000. Mr. Sakellaris was a founding member and previously served as the president, and is currently a director, of the National Association of Energy Service Companies, a national trade organization representing the energy efficiency industry. Mr. Sakellaris will effective April 1, 2026 step down as President of Ameresco, Inc. continuing to report to the Company's Board of Directors as Chief Executive Officer of the Company and to serve as the Chairman of the Board.

Peter Christakis: Mr. Christakis was promoted to President - East USA, Greece and Project Risk in October 2024. Prior to this, he served as our executive vice president since May 2023 overseeing the East Region. Before being promoted executive officer, Mr. Christakis served as senior vice president East Region from 2019. Effective April 1, 2026, the Board of Directors of the Company appointed Mr. Peter Christakis to serve and Chief Operating Officer of the Company.

Mr. Maltezos was promoted to President - Central and Western USA and Canada Region in October 2024. Prior to this, he served as our executive vice president since April 2009 overseeing US central region and Canada operations, in which role he took on overseeing all of North America in 2023 . Prior to this, Mr. Maltezos served in various management capacities with our company since 2004, including as vice president and general manager of our Midwest regions from June 2004 to April 2009. Effective April 1, 2026, the Board of Directors of the Company appointed Mr. Louis P. Maltezo to serve as Co-Presidents of the Company.

Mr. Bakas was promoted to President - Renewable Fuels in October 2024. Prior to this, he served as our executive vice president, distributed energy systems, since November 2017. Prior to this, Mr. Bakas served in various capacities with our company since 2000, including as our senior vice president, renewable energy, from March 2010 to November 2017.

Nicole A. Bulgarino: Ms. Bulgarino was promoted to President - Federal Solutions and Utility Infrastructure in October 2024. Prior to this, she served as our executive vice president and general manager of federal solutions since May 2017 in which role she took on overseeing our battery Energy Storage Systems and our operations in Hawaii and Alaska in 2023. Ms. Bulgarino has been with our company since 2004, including serving as our senior vice president and general manager of federal solutions from May 2015 to May 2017. Effective April 1, 2026, the Board of Directors of the Company appointed Ms. Nicole A. Bulgarino Co-President of the Company.

Joseph W. Sutton, has served as a director since 2002. Since 2000, Mr. Sutton has been the manager of Sutton Ventures Group, LLC, an energy investment firm that he founded. In 2007, he founded and has since led Consolidated Asset Management Services, or CAMS, which provides asset management, operations and maintenance, information technology, budgeting, contract management and development services to power plant ventures, oil and gas companies, renewable energy companies and other energy businesses. From 1992 to November 2000, Mr. Sutton worked for Enron Corporation, an energy company, where he most recently served as vice chairman and as chief executive officer of Enron International.

Frank V. Wisneski, has served as a director since 2011. Prior to retiring in 2001, Mr. Wisneski was a Partner and Senior Vice President at Wellington Management Company, LLP, an institutional asset manager serving clients globally, where he had worked since 1969. We believe that Mr. Wisneski is qualified to serve as a director because of his prior experience conducting financial and strategic analysis of companies, including emerging areas and companies, and establishing and building new investment products for institutional asset management clients. Since retiring, Mr. Wisneski has maintained a focus on financial and strategic analysis by serving on investment, finance and executive committees at several nonprofit organizations.

Jennifer L. Miller, has served as a director since 2015. From September 2015 through April 2020, Ms. Miller served as chief business sustainability officer of Sappi North America, the U.S. subsidiary of Sappi Limited, a producer of diversified cellulosic products including packaging and specialty papers, printing papers, biomaterials and biochemicals. From 2002 to August 2015, Ms. Miller held senior management positions at Sappi North America, including executive vice president and chief sustainability officer, executive vice president - strategic marketing and executive vice president - publishing.

Nickolas Stavropoulos, has served as a director since April 2019. Mr. Stavropoulos served as the president and chief operating officer of Pacific Gas and Electric Company from March 2017 through September 2018, as president, gas from August 2015 through February 2017 and executive vice president, gas operations from June 2011 to August 2015. In January 2019, Pacific Gas and Electric Company and its parent company, PG&E Corporation, filed voluntary petitions for reorganization under Chapter 11 of the U.S. Bankruptcy Code. Before joining Pacific Gas and Electric Company, Mr. Stavropoulos served as executive vice president and chief operating officer of National Grid from 2007 through 2011. Prior to that role, Mr. Stavropoulos was president of KeySpan Energy Delivery, and also held several senior leadership roles at Colonial Gas Company and Boston Gas. Mr. Stavropoulos also serves as a director for the publicly traded company Enterprise Bancorp, and various private, and non-profit organizations, including TRC Companies, Picarro, Mosaic, Bentley University, and the Gas Technology Institute.

Charles R. Patton, age 65, has served as our director since April 2023. From 2017 until his retirement July 1, 2022, Mr. Patton served as executive vice president, external affairs American Electric Power Company, Inc. (AEP) one of the largest electric utilities in the U.S. During this time, Mr. Patton was responsible for leading AEP's customer services, economic development, regulatory, communications, federal public policy, North American Electric Reliability Corporation (NERC) compliance and corporate sustainability initiatives. From 2010 to 2017, Mr. Patton served as president and chief operating officer of Appalachian Power Company, a unit of AEP, where Mr. Patton was responsible for utility operations, strategy, profit and loss and all external relationships. From June 2008 to June 2010, Mr. Patton served as senior vice president of regulatory policy before transitioning to the role of executive vice president of AEP's Western utilities where he was responsible for oversight of utilities in Texas, Louisiana, Arkansas and Oklahoma. Mr. Patton currently serves on the board of two other public companies: Centuri Construction Group, Inc. and California Water Services Group, and on the board of various private and non-profit organization such as Messer Construction Company. Charles R. Patton., will not be standing for re-election as a Class I director at the Annual Meeting.

Claire Hughes Johnson, has served as a director since July 2021. Since October 2014, Ms. Hughes Johnson has served in various roles with the global financial technology company Stripe, Inc., first as chief operating officer until April 2021 and since then as corporate officer and advisor. Prior to joining Stripe, she spent ten years at Google, leading various business teams including the launch and operations of Gmail and Google Apps. She was also the vice president responsible for Adwords mid-market revenue globally, Google Offers and the business operations of Google's self-driving car project. Ms. Hughes Johnson also currently serves on the board of two other public companies: a self-driving technology company, Aurora Innovation, Inc. and HubSpot, Inc. a customer relationship management platform, and on the board of various private and non-profit organization such as The Atlantic, Milton Academy and Brown University. She has previously served on the board of Hallmark Cards, Inc.

Ms. Julie Bradshaw, the Company's Vice President, Finance, was designated to serve as the Company's Interim Principal Financial Officer with effect from 25th September 2026. Ms. Bradshaw joined the Company in April 2014 and has served as the Company's Vice President, Finance since January 2026. Prior to that role, she held various positions within the Company's finance department. Before joining the Company, Ms. Bradshaw served as Accounting Supervisor at Enterprise Holdings.

Ms. Debbie Angelico, the Company's Vice President, Finance, was designated to serve as the Company's Interim Principal Accounting Officer with effect from 25th September 2026. Ms. Angelico joined the Company in August 2020 and has served as the Company's Vice President, Finance since January 2026. Prior to that role, she held various positions within the Company's finance department. Before joining the Company, Ms. Angelico served as Senior Manager of SEC Reporting at Covertus for one year and as Chief Financial Officer of Next Level Now, Inc. for five years.

On July 22, 2026, the board of directors of Ameresco, Inc. appointed Brian Cox as a class III director of the Company, effective as of August 1, 2026. Mr. Cox, 53, has over 20 years of experience of the data center energy infrastructure industry and is the founder and former chief executive officer of STACK Infrastructure Holdings (STACK), a global digital infrastructure platform. Prior to founding STACK, he served as Chief Operating Officer and Chief Financial Officer at Cologix, Inc. and held leadership positions at Tempo Financial Holdings Corporation and KPMG LLP. Prior to founding STACK, Mr. Cox served as Chief Operating Officer and Chief Financial Officer at Cologix, Inc. and held leadership positions at Tempo Financial Holdings Corporation and KPMG LLP. Mr. Cox serves on the boards of STACK and Gigabit Fiber. He earned a Bachelor of Business Administration from Texas Christian University and an MBA from the University of Colorado. Mr. Cox is a Certified Public Accountant and served as an officer in the United States Army Reserve.