Executive Officers

David Leuschen, 73
Chief Executive Officer and Director

Mr. Leuschen has served as chairman of the board of directors of ANSC since November 2023. Mr. Leuschen is the co-founder and senior managing director of Riverstone Holdings LLC. Prior to Riverstone, Mr. Leuschen was a partner and managing director at Goldman Sachs and founder and head of the Goldman Sachs Global Energy and Power Group. Mr. Leuschen was responsible for building the Goldman Sachs energy and power investment banking practice into one of the leading franchises in the global energy and power industry. Mr. Leuschen additionally served as chairman of the Goldman Sachs Energy Investment Committee, where he was responsible for screening potential direct investments by Goldman Sachs in the energy and power industry. In addition to his board roles at various Riverstone portfolio companies and investment vehicles, Mr. Leuschen has served as a director of Cambridge Energy Research Associates, Cross Timbers Oil Company (predecessor to XTO Energy) and J. Aron Resources. He is also president and sole owner of Switchback Ranch LLC and on the Advisory Board of Big Sky Investment Holdings LLC. Mr. Leuschen currently serves on the board of directors of Enviva Inc. and various private Riverstone portfolio companies. Mr. Leuschen serves on a number of nonprofit boards of directors, including as a Trustee of United States Olympic Committee Foundation, a Director of Conservation International, a Director of the Peterson Institute for International Economics, a Founding Member of the Peterson Institute’s Economic Leadership Council, a Director of the Wyoming Stock Growers Association and a Director of the Montana Land Reliance. Mr. Leuschen is a former director of Decarb IV between 2021 and 2023, Decarb III during 2021, Decarb II between 2021 and 2022 and Decarb I, between 2020 and 2021. Mr. Leuschen received his A.B. from Dartmouth and his M.B.A. from Dartmouth’s Amos Tuck School of Business.

Thomas Smith, 41
Chief Financial Officer, Chief Accounting Officer and Secretary

Mr. Smith has served as the chief financial officer, chief accounting officer and secretary of ANSC since October 2023 and serves as Riverstone Holdings LLC’s chief financial officer. Prior to joining Riverstone Holdings LLC in 2013, Mr. Smith served in several financial roles within Apax Partners, LP, most recently as the assistant controller. Previously, he worked with Ernst & Young LLP, where he focused on assurance engagements for both public and private companies. Mr. Smith earned his undergraduate degree from Fairfield University and is a certified public accountant.

Board of Directors

Robert Glover, 49
Director Nominee and Prospective Chairman of the Board

Mr. Glover has served as the Chief Executive Officer of ANSC since September 2023 and a director of ANSC since November 2023. Mr. Glover is the founder and Managing Director of Impact Ag, an asset management company founded in 1996 focused on farm management, business planning, animal welfare, natural capital and other nature-based solutions. Since 2011, Mr. Glover has served as a director of Wilmot Natural Beef, in New South Wales and from October 2014 to September 2019, Mr. Glover served as Agriculture Adviser to Maia Technology. Mr. Glover is a graduate of University of New England (Australia) with a bachelor’s degree in Agribusiness, Agriculture Economics.

Jeffrey H. Tepper, 59
Director Nominee

Mr. Tepper has served on the board of directors of ANSC since November 2023. Mr. Tepper is founder of JHT Advisors LLC, a mergers and acquisitions (“M&A”) advisory and investment firm. Since September 2021, Mr. Tepper has served as co-founder of Gemini XIII, which serves the audio industry with premium content, production and marketing services for podcasting and radio. From 1990 to 2013, Mr. Tepper served in a variety of senior management and operating roles at the investment bank Gleacher & Company, Inc. and its predecessors and affiliates (“Gleacher”). Mr. Tepper was head of investment banking and as a member of Gleacher’s Management Committee. Mr. Tepper is also Gleacher’s former chief operating officer overseeing operations, compliance, technology and financial reporting. In 2001, Mr. Tepper co-founded Gleacher’s asset management activities and served as president. Gleacher managed over $1 billion of institutional capital in the mezzanine capital and hedge fund areas. Mr. Tepper served on the investment committees of Gleacher Mezzanine and Gleacher Fund Advisors. Between 1987 and 1990, Mr. Tepper was employed by Morgan Stanley & Co. as a financial analyst in the M&A and merchant banking departments. Mr. Tepper served as a director of Silver Run I from its inception in November 2015 until the completion of its acquisition of Centennial in October 2016 and has served as a director of Permian Resources Corporation (f/k/a Centennial Resource Development, Inc.) (NASDAQ: PR) since October 2016. Mr. Tepper is a former director of Alta Mesa Resources, Inc. (NASDAQ: AMR) and its predecessor, Silver Run II, between March 2017 and June 2020. Mr. Tepper is a former director of Decarb IV between 2021 and 2023, Decarb III during 2021, Decarb II between 2021 and 2022 and Decarb I, between 2020 and 2021. Mr. Tepper received a Master of Business Administration from Columbia Business School and a Bachelor of Science in Economics from The Wharton School of the University of Pennsylvania with concentrations in finance and accounting.

Nate Zwald, 47
Director Nominee

Dr. Zwald is a freelance business consultant. Prior to his current experience, Dr. Zwald served as the Chief Operating Officer of ABS Global Inc., the world leader in bovine genetics, reproduction services and technologies from December 2016 to March 2024. From September 2001 to December 2016, Dr. Zwald worked for Alta Genetics Inc., most recently as the US General Manager for the company. Dr. Zwald received his Ph.D. in dairy cattle genetics and Master of Business Administration from the University of Wisconsin. Dr. Zwald has previously served on the board of the Council on Dairy Cattle Breeding and the board of the National Association of Animal Breeders.

Jean Rogers, 61
Director Nominee

Dr. Rogers is a Senior Managing Director and ESG Chairperson at Blackstone Inc. (“Blackstone”). She recently served on the board of directors of Xpansiv Data Systems, Inc., a Blackstone portfolio company, from October 2022 to December 2024, as well as on the Investment Committees for certain of Blackstone’s strategies in private equity and private credit focused on energy transition and climate solutions. Since September 2018, she has also served as an advisory board member of both Terra Alpha Investments, LLC and Tang Group, Inc. Dr. Rogers has advised several companies and asset managers on long-term ESG integration as an independent board director and C-level advisor, including: serving on the board of directors of Shine Medical Technologies, LLC between February 2021 and June 2022, serving on the board of directors of Foran Mining Corporation (TSX: FOM) between March 2021 and June 2022, serving as an advisory board member of Trane Technologies plc (NYSE: TT) between September 2018 and June 2022, serving as an advisory board member of FiscalNote Holdings, Inc. (NYSE: NOTE) between September 2018 and June 2022, and serving as a strategic advisor of Long-Term Stock Exchange Inc. between September 2018 and October 2021. From March 2011 to August 2018, Dr. Rogers founded and led the Sustainability Accounting Standards Board (“SASB”), a non-profit dedicated to optimizing U.S. capital markets by fostering disclosure of material sustainability information that meets investor needs and enhances public trust. Before founding SASB, Dr. Rogers worked to advance sustainable development across the U.S., Europe and China for more than a decade at Arup North America, LTD, a global engineering consultancy specializing in low-carbon infrastructure and green buildings, and Deloitte Consulting, where she worked on environmental projects in its manufacturing practice. Dr. Rogers holds a PhD in environmental engineering from Illinois Institute of Technology and earned both her bachelor’s and master’s degrees in civil and environmental engineering from Manhattan College. She was a Loeb Fellow at Harvard University and currently is involved in board, advisory, and academic capacities with notable institutions, including The Jane Goodall Institute, Woodwell Climate Research Center, Harvard Kennedy School, INSEAD, Columbia, and the University of Chicago.