John J. McKenna

Washington, DC

(202) 461-2252 office
(703) 405-0881 cell

John is a career energy and technologies commercial and investment banker. Prior to forming HamiltonClark in 2003 he was the CFO of STM Power, an energy technologies company. Prior to STM, he spent 21 years as a Managing Director in investment banking with McKenna Securities, PricewaterhouseCooper’s Securities, Lehman Brothers, and Dean Witter Reynolds in New York, Houston, and Washington, DC. Prior to that he spent 10 years as a Vice President in the Energy Group at Citibank in New York.

He has served on the boards of Equus Corporation, a business development company (now NYSE: EQS), Proler International Corp., which at the time of its acquisition was the world’s largest scrap steel recycler (formerly NYSE: PS), STM Power and numerous charitable and civic organizations. During 2007 and 2008 he was a member of the Technical Advisory Committee of the joint DOE/USDA Biomass Research and Development Initiative. He graduated with a Bachelor of Science in Foreign Service degree from the Walsh School of Foreign Service at Georgetown University and has served as an Adjunct Professor at the McDonough Graduate School of Business at Georgetown where he taught the course titled Project Finance. He is a General Securities Principal and holds Series 7, 24, 63 and 79 licenses.


Ross F Crawford
Managing Director

Houston, TX

(713) 203-1902

Prior to joining HamiltonClark in 2004 Ross was President and Managing Partner of the private merchant banking firm, Dominion Financial Partners, LLC which he co-founded in 1988, and Dominion Financial Securities Company, a NASD-member firm. Additionally, during this period, he served as COO and a Director of two diversified middle market companies, Ruska Instruments, a manufacturer of precision pressure instrumentation products and HydroTech Systems, an engineering and manufacturing company of high pressure oil and gas sub-sea flow line connecting devices. He was a co-founder of the Houston Angel Network, and has judged investment proposals for the Houston Technology Center, the Rice University Alliance, the NREL Industry Growth Forum and the Texas Emerging Technology Fund. Prior to 1988 he had a successful corporate banking and management career spanning nearly 20 years with Houston-based First City Bancorporation.

Ross graduated from the University of the Pacific with a BA in International Relations in 1965 and served in Germany with the U. S. Army Security Agency. He is a General Securities Principal, and holds Series 7, 24, 63 and 79 licenses.


Jeffrey R. Pendergraft
Managing Director

Houston, TX

(713) 594-0322

Prior to joining HamiltonClark as Managing Director, Jeff was Managing Director of WoodRock & Co., a Houston based investment banking firm, and before that that he served as Managing Director and Chief Compliance Officer at Galway Capital, also a Houston based investment bank. In both of these roles he led the team providing private placement and M&A transaction support to energy sector clients. Prior to joining Galway Capital in 2009, he founded the Wind Rose Group, a private equity firm specializing in the gas processing sector. Earlier in his career, he served as the Executive Vice President and Chief Administrative Officer of Lyondell Chemical Company, (formerly NYSE: LYO). In addition, he served as Chairman of the Board of Lyondell-Citgo Refining, a $2 billion refinery joint venture between Lyondell and Citgo Petroleum, a subsidiary of PDVSA, the Venezuelan national oil company. He has in the past served on the Board or Advisory Boards of a variety of private and public energy firms.

He has over 35 years of experience with energy sector mergers, acquisition and joint venture transactions, as well as private and public debt and equity financings. He is a graduate of the Stanford University School of Law and is a member of both the Texas and California State Bar Associations. He is a General Securities Principal and holds Series 24, 62, 63 and 79 licenses.


Stephen H. Pouns
Managing Director

Houston, TX

(281) 222-4738

Steve has spent his career in the investment advisory and investment banking business, and is experienced in bringing investment ideas to fruition. In the mid 1970’s, with a group of partners he formed AIM Management, which was later acquired by INVESCO. In the early 2000’s he formed a hedge fund dedicated to the energy business, and since 2011 he has been involved in project finance for LNG projects as an investment banker with Galway Capital and WoodRock Securities.

He has served on the Board of Trustees at Memorial Hermann Healthcare System in Houston for over twenty years and served as Chairman of the Board at Chapelwood Methodist Church, Chairman of the Memorial Hermann Women’s and Children’s Committee. He graduated from the University of Texas at Austin with a BBA in Finance and holds Series 7, 63 and 79 licenses.


J. Gordon Sorrells
Managing Director

Houston, TX

(713) 825-9923

Prior to joining HamiltonClark, Gordon was a founder and Chief Financial Officer of Houston Minerals, LLC. He began his career with Pan American Petroleum in Fort Worth as a geologist, followed by an energy lending career with Bankers Trust Company in New York, First City National Bank of Houston and First Interstate Bank. He then served as the Chief Financial Officer of First Seismic Company, and then joined Harris, Webb & Garrison as Managing Director of their Energy Group, followed by senior positions with Deloitte & Touche, Trenegy Incorporated, and Mizuho Bank.

He is a past director of the Texas Alliance of Energy Producers, a member of the Independent Petroleum Association of America, and a former Treasurer of the National Ocean Industries Association. He is also the former President of the Houston Energy Finance Group and is a current member of the Houston Energy Producers Forum. He received a MBA in Finance and a BS in Geology from Texas Christian University, and also completed the Stanford University Graduate School of Banking Program. He is a registered securities professional, and holds Series 63 and 79 licenses.


Bic Stevens
Managing Director

Boston, MA

(617) 692-0299

Prior to joining HamiltonClark, Bic was the Founder and Principal of Stevens Capital Advisors, an energy and technologies investment banking and advisory firm. Prior to that he was Senior Vice President of Business Development for Premium Power, a manufacturer of grid-scale flow batteries. He was previously a Managing Partner of Ardour Capital Investments, a cleantech investment bank, a Managing Director at Zero Stage Capital, an early-stage venture capital firm, where he oversaw the firm’s clean technology investing, CEO and founder of Eastech, an early-stage venture capital firm, and a Vice President at Paine Webber, where he worked in its investment banking and venture capital operations.

He has over 30 years of venture capital, investment banking, and business development experience and has served on the boards of directors of a number of early stage technology companies. He received a B.I.E. degree from Georgia Tech and an M.B.A. from the Harvard Business School. He is a General Securities Principal and holds Series 7, 24, 63 and 79 licenses.


Gary D. Vollen
Managing Director

San Francisco, CA

(415) 819-8492

Gary is a San Francisco-based investment banking professional with more than 25 years of experience providing capital raising and M&A advisory services to emerging growth technology companies, predominantly in the sustainability and energy technology sectors. He was a Managing Director at Hambrecht & Quist, JPMorgan, Prometheus Advisors, Pacific Growth Equities and Robert W. Baird. He established his own investment banking advisory firm, Deukalion Advisors LLC, in 2013, and started executing all securities transactions through HamiltonClark in 2017.

He has advised on approximately 85 capital raising and M&A transactions representing about $9 billion of transaction value. He currently serves on the Advisory Board of MeWe, a Next-Gen social network company and served on San Francisco Mayor Gavin Newsom’s Clean Technology Advisory Council in 2005 and 2006. He earned a Bachelor of Science degree in Business Administration from the University of California at Berkeley and an MBA degree with an emphasis in Entrepreneurial Studies from the Anderson Graduate School of Management at UCLA. He is a General Securities Principal and holds Series 7, 24, 63 and 79 licenses.


Hamilton Clark Sustainable Capital, Inc. is a member of FINRA and SIPC.
1701 Pennsylvania Avenue, NW, Suite 300, Washington, DC 20006 (202) 461-2252