Mr. Stidolph is Chairman of the Board and Chief Executive Officer of AltEnergy Acquisition Corp. He is also the founder of AltEnergy, LLC, a private equity firm focused on alternative energy investing, and chair of Eos Energy Enterprises, Inc. (NASDAQ:EOSE). Mr. Stidolph has over two decades of experience investing in and building businesses in the alternative energy sector. In 2000, he started the alternative energy practice at JH Whitney, a pioneer in private equity, founded in 1946. He founded AltEnergy in 2006 and has remained focused on the sector since, serving as Managing Director and Principal. Mr. Stidolph has led investments in nine alternative energy businesses and infrastructure projects, co-founding and serving as chairman of four, and serving as Chief Financial Officer of two. These investments span private companies in biofuels (Hawkeye Renewables), renewable power generation (Iowa Winds, American Heartland Wind, Broadview Energy), demand response software (Viridity), transmission infrastructure (Anbaric Power, Tres Amigas, Western Interconnect), and energy storage technology, Eos Energy Enterprises, Inc. Mr. Stidolph received a Bachelor of Arts degree from Dartmouth College.

Mr. Darnell is a Managing Director of AltEnergy, LLC and has over 30 years of experience with the U.S. alternative energy sector spanning the public policy and commercial arenas. Prior to joining AltEnergy, Mr. Darnell founded and ran Patolan Partners, an alternative energy-oriented placement agent that has sourced capital commitments exceeding $450MM, including utility scale solar and wind developments and institutional equity for Eos Energy Storage. Mr. Darnell serves as a Member of the Investment and Audit Committees of Green Century Funds, the nation’s first pure environmentally screened and fossil-free family of mutual funds. He is also a Managing Director at Pickwick Capital Partners, LLC where he holds his Series 7/Series 63 securities licenses. Previously, Mr. Darnell was Vice President at Morgan Stanley & Co., where he advised clients with total capital exceeding $5 billion. Prior to Morgan Stanley, Mr. Darnell served in senior management with The Public Interest Network and as chief executive of Telefund, Inc., serving the nation’s major environmental organizations while achieving a 45% CAGR in profit for 10 years. Mr. Darnell’s current and past board experience includes Green Century Funds, Paradigm Partners, board member, The Public Interest Network, advisory board member, and Citizens for Safe Energy, founding chair. Mr. Darnell graduated magna cum laude with an AB in philosophy from Princeton University and earned his MBA in finance from the Wharton School of the University of Pennsylvania. He is a competitive, former nationally ranked squash player (#12 U.S. Men’s 35-39) and accomplished musician, having trained for eight years in the Pre-College Division of The Juilliard School.

Daniel Shribman has served as chief investment officer of B. Riley Financial and president of B. Riley Principal Investments since September 2019 and September 2018, respectively. Mr. Shribman helps oversee the asset base of B. Riley Financial alongside chief executive officer Bryant Riley. This asset base consists of several cash flow generating operating businesses in addition to cash and investments which includes bilateral loans and small cap equity positions in both public and private markets. In virtually all investments, B. Riley Financial is involved at the board level and active in business and capital allocation decisions. Mr. Shribman has served as a member of the board of directors of TheMaven, Inc. (OTCMKTS:MVEN) since June 2021. Mr. Shribman has served as a member of the board of directors of Alta Equipment Group Inc. (Alta) (NYSE: ALTG) since February 2020, when it completed its business combination with BRPM, where Mr. Shribman was chief financial officer. Mr. Shribman has also served as a member of the board of directors of Eos Energy (NASDAQ: EOSE) since November 2020, when it completed its business combination with BRPM II, where Mr. Shribman was chief executive officer. Mr. Shribman has served as the Chief Executive Officer and Chief Financial Officer of B. Riley Principal 150 Merger Corp. and B. Riley Principal 250 Merger Corp., two special purpose acquisition companies sponsored by an affiliate of B. Riley Financial since April 2021 and May 2021, respectively. Mr. Shribman brings experience in both public and private equity. Prior to joining B. Riley Financial, Mr. Shribman was a Portfolio Manager at Anchorage Capital Group, L.L.C., a special situation asset manager, from 2010 to 2018. During Mr. Shribman’s tenure at Anchorage Capital Group, L.L.C., he led investments in dozens of public and private opportunities across the general industrial, transportation, automotive, aerospace, gaming, hospitality and real estate industries. These investments ranged from public equities and bonds to deeply distressed securities, par bank debt, minority owned private equity and majority owned private equity. Mr. Shribman worked in close collaboration with management teams and boards to maximize shareholder value in the form of both operational turnarounds, capital market financing and capital deployment initiatives. Prior to Anchorage Capital Group, L.L.C., Mr. Shribman worked at Tinicum Capital Partners, a private equity firm, and in the restructuring advisory group at Lazard (NYSE: LAZ). In April 2019, Mr. Shribman led the initial public offering of BRPM, a blank check company with a business purpose substantially similar to the Company, but sponsored by an affiliate of B. Riley Financial. On December 12, 2019, BRPM announced its entry into a definitive agreement relating to its initial business combination with Alta, a leading provider of premium industrial and construction equipment and related services. The transaction was valued at approximately $540 million and closed on February 14, 2020. Further, in May 2020, Mr. Shribman led the initial public offering of BRPM II. On September 8, 2020, BRPM II announced its entry into a definitive agreement relating to its initial business combination with Eos Energy, a leading manufacturer of safe, reliable, low-cost zinc battery storage systems. The transaction was valued at approximately $500 million and closed on November 16, 2020.

William Campbell provides a global law-firm legal perspective on energy and thirty years of experience with the development and operation of  large-scale, global energy and infrastructure projects. Mr. Campbell is General Counsel and Managing Director of I Squared Capital and a member of the Firm’s Investment Committee and head of ESG and Sustainability. Previously, Mr. Campbell served as co-chair of the Global Energy and Infrastructure Practice Group at the international law firm of Gibson Dunn & Crutcher LLP.