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MANAGEMENT & BOARD OF DIRECTORS

J. Heath Deneke

President, Chief Executive Officer and Chairman of the Board

J. Heath Deneke joined Summit Midstream in September 2019 as President and Chief Executive Officer.  Mr. Deneke is also on the board of directors of Summit Midstream and was appointed Chairman of the Board in May 2020. 

Mr. Deneke joined Summit Midstream from Crestwood Equity Partners, where he most recently served as Executive Vice President, Chief Operating Officer and a member of the Office of the Chairman. He was responsible for commercial development and operations of its midstream businesses, including assets in the Bakken, Barnett, Fayetteville, Marcellus, Powder River, and Permian basins. 

Prior to his role as EVP and Chief Operating Officer of Crestwood Equity Partners, Mr. Deneke served as the Chief Operating Officer and President of Crestwood's Pipeline Services Group.  He served as President, Natural Gas Business Unit of Crestwood's general partner from October 2013 to June 2015 following the close of the Inergy/Crestwood merger and prior to that assignment, he served as Senior Vice President and Chief Commercial Officer of Legacy Crestwood from August 2012 until October 2013. Mr. Deneke has held several roles at El Paso Corporation and its affiliates starting in 1996, including Vice President of Project Development and Engineering for the Pipeline Group, where he was responsible for the planning and execution of over $8 billion in expansion projects. At El Paso, he also served as Director of Marketing and Asset Optimization for Tennessee Gas Pipeline Company, LLC and Manager of Business Development and Strategy for Southern Natural Gas Company, LLC.

Mr. Deneke holds a bachelor's degree in Mechanical Engineering from Auburn University. He serves on the board of directors for Bay West Environmental and Bradford Airport Logistics and is a member of the Houston Chapter of the Young Presidents Organization.

Hugo Guerrero

Senior Vice President, Engineering and Operations

Hugo Guerrero, Senior Vice President, Engineering and Operations, joined Summit Midstream in 2020. Prior to his current role, Mr. Guerrero served as Senior Vice President of Technical Services at Crestwood Midstream Partners, where he had a broad role with responsibilities that included System Planning, Project Execution & Controls, Supply Chain, Operations Engineering, Asset Integrity, I&E, and Measurement, SCADA, Land, and Permitting.  Mr. Guerrero has more than 30 years of experience in the oil and gas industry, having spent 20 years on the engineering services side of the business leading projects across the entire energy value chain.

 

Prior to Crestwood, Mr. Guerrero spent eight years leading and growing CH2M HILL’s Pipelines & Terminals market segment with responsibilities across the Americas, including Mexico, Argentina, and Brazil.  Mr. Guerrero started his career in Southern California at an oil and gas engineering firm where he spent 12 years in various roles with increasing responsibilities.


Mr. Guerrero holds a bachelor’s in science degree from the University of Arizona, is a graduate of the Project Management Program at University of California, Irvine. Mr. Guerrero is also a U.S. Army Field Artillery veteran, having served in Germany and the middle east during Desert Storm.


Matt Sicinski

Senior Vice President and Chief Accounting Officer

Mr. Sicinski has served as Senior Vice President and Chief Accounting Officer since February of 2022 and is responsible for overseeing all accounting functions.  Mr. Sicinski joined Summit in February of 2020 as Vice President and Chief Accounting Officer. 

Prior to joining Summit, Mr. Sicinski was the Vice President and Controller at Venari Resources and served in multiple accounting, finance and commercial development roles at Southwestern Energy.  Mr. Sicinski has over seven years of public accounting experience with the Houston offices of Arthur Andersen and Ernst & Young and was a manager in Ernst & Young’s assurance practice.  

Mr. Sicinski holds Bachelor of Business Administration and Master of Business Administration degrees in Accounting from Angelo State University and is a Certified Public Accountant.  Mr. Sicinski is also a Lieutenant Commander in the United States Navy Reserve and a veteran of the Afghanistan War. 

James Johnston

Executive Vice President, General Counsel and Chief Compliance Officer

James Johnston joined Summit Midstream in September 2020 as Executive Vice President, General Counsel and Chief Compliance Officer.

Mr. Johnston joined Summit Midstream from Crestwood Equity Partners, where he most recently served as Senior Vice President and General Counsel.  Prior to his role as Senior Vice President and General Counsel at Crestwood Equity Partners, Mr. Johnston served as Vice President, Deputy General Counsel at Crestwood.  Prior to joining Crestwood in 2013, Mr. Johnston served as Assistant General Counsel for Kinder Morgan and in various legal and commercial roles of increasing responsibility at Kinder Morgan, El Paso Corporation and Sonat, Inc. from 1997 to 2013.

Mr. Johnston holds a bachelor's degree from Western University in Ontario, Canada and a Doctor of Jurisprudence from Samford University's Cumberland School of Law in Birmingham, Alabama.

Bill Mault

Executive Vice President and Chief Financial Officer

Mr. Mault has served as Executive Vice President and Chief Financial Officer for Summit since February of 2022.  Mr. Mault joined Summit in 2016 and has held various senior management roles, including Vice President of Corporate Development, Finance and Treasurer. Mr. Mault currently serves on the board of CorEnergy. 

Prior to joining Summit, Mr. Mault spent nearly 10 years in mergers & acquisitions and investment research capacities, most recently at SunTrust Robinson Humphrey (now Truist Securities).  Mr. Mault has over 10 years of oil and gas industry experience, is a Chartered Financial Analyst® charterholder and holds a Bachelor of Business Administration, majoring in Banking, Finance and Economics, from Northwood University.

J. Heath Deneke

President, Chief Executive Officer and Chairman of the Board

J. Heath Deneke joined Summit Midstream in September 2019 as President and Chief Executive Officer of Summit Midstream Corporation.  Mr. Deneke is also on the board of directors of Summit Midstream and was appointed Chairman of the Board in May 2020. 

Mr. Deneke joined Summit Midstream from Crestwood Equity Partners, where he most recently served as Executive Vice President, Chief Operating Officer and a member of the Office of the Chairman. He was responsible for commercial development and operations of its midstream businesses, including assets in the Bakken, Barnett, Fayetteville, Marcellus, Powder River, and Permian basins. 

Prior to his role as EVP and Chief Operating Officer of Crestwood Equity Partners, Mr. Deneke served as the Chief Operating Officer and President of Crestwood's Pipeline Services Group.  He served as President, Natural Gas Business Unit of Crestwood's general partner from October 2013 to June 2015 following the close of the Inergy/Crestwood merger and prior to that assignment, he served as Senior Vice President and Chief Commercial Officer of Legacy Crestwood from August 2012 until October 2013. Mr. Deneke has held several roles at El Paso Corporation and its affiliates starting in 1996, including Vice President of Project Development and Engineering for the Pipeline Group, where he was responsible for the planning and execution of over $8 billion in expansion projects. At El Paso, he also served as Director of Marketing and Asset Optimization for Tennessee Gas Pipeline Company, LLC and Manager of Business Development and Strategy for Southern Natural Gas Company, LLC.

Mr. Deneke holds a bachelor's degree in Mechanical Engineering from Auburn University. He serves on the board of directors for Bay West Environmental and Bradford Airport Logistics and is a member of the Houston Chapter of the Young Presidents Organization.

Jerry Peters

Director

Jerry L. Peters has served as a director of Summit Midstream since September 2012. Mr. Peters serves as the chair on the Audit Committee of the Board and also serves on the Conflicts Committee of the Board as well as the Nominating, Governance and Sustainability Committee of the Board. Mr. Peters has served as the Chief Financial Officer of Green Plains, Inc., a publicly-traded vertically-integrated ethanol producer, from 2007 to 2017.

Prior to that, Mr. Peters served as Senior Vice President—Chief Accounting Officer for ONEOK Partners, L.P. from May 2006 to April 2007, as Chief Financial Officer of ONEOK Partners, L.P. from July 1994 to May 2006, and in various senior management roles of ONEOK Partners, L.P. from 1985 to May 2006. Prior to joining ONEOK Partners, Mr. Peters was employed by KPMG LLP as a certified public accountant from 1980 to 1985.

Mr. Peters received an MBA from Creighton University with an emphasis in finance and a B.S. in Business Administration from the University of Nebraska—Lincoln. We believe that Mr. Peters' extensive executive, financial and operational experience bring important and necessary skills to the board of directors.

Lee Jacobe

Director

Lee Jacobe has served as director of Summit Midstream since April 2019 and serves as chair of the Compensation Committee of the Board and on the Audit Committee of the Board. Mr. Jacobe currently also serves as an executive with Manchester Energy, LLC.

From 2019 through 2021, Mr. Jacobe served as an advisor with respect to energy investments for Kelso & Company, a New York based private equity firm.  From 2008 through 2018, Mr. Jacobe was involved in various capacities at Barclays Investment Banking – Energy Group, including head of the firm's midstream coverage effort, co-head of its US Oil & Gas group, and Vice Chairman of the firm.  From 1993 through 2008, Mr. Jacobe was an investment banker in the energy group at Lehman Brothers, including serving as a managing director from 2001–2008.  Mr. Jacobe began his investment banking career at Wasserstein Perella & Co. in 1990.  

Mr. Jacobe received a B.B.A. in Finance from the University of Texas at Austin.  Mr. Jacobe was selected to serve as a director on the board because of his extensive industry experience, including a vast array of experience in corporate finance, capital structure, and the evaluation of financial risks associated with publicly traded partnerships that invest in midstream infrastructure.

Robert McNally

Director

Robert McNally has served as a director of Summit Midstream since May 2020 and also serves on the Audit Committee of the Board. Mr. McNally currently serves as the Chief Growth Officer for Eco Material Technologies. Mr. McNally also serves as a director of PERMA-PIPE International Holdings, Inc., where he sits on the Audit, Compensation, and Nominating and Corporate Governance committees. He also previously served on the Board of Oasis Petroleum.

From 2018 through 2019, Mr. McNally served as President and Chief Executive Officer of EQT Corporation, an NYSE-listed independent natural gas producer with operations in Pennsylvania, West Virginia and Ohio. Prior to that, from 2016 to 2018, Mr. McNally served as Senior Vice President and Chief Financial Officer of EQT Corporation. From 2010 until 2016, Mr. McNally served as Executive Vice President and Chief Financial Officer of Precision Drilling Corporation, a TSE and NYSE-listed drilling contractor with operations primarily in the United States, Canada and the Middle East. From 2009 to 2010, and for a period in 2007, Mr. McNally served as an Investment Principal for Kenda Capital LLC. In 2008, Mr. McNally served as the Chief Executive Officer of Dalbo Holdings, Inc. In 2006, Mr. McNally served as Executive Vice President of Operations and Finance for Warrior Energy Services Corp. From 2000 to 2005, Mr. McNally worked in corporate finance with Simmons & Company International.

Mr. McNally began his career as an engineer with Schlumberger Limited and served in various capacities of increasing responsibility during his tenure from 1994 until 2000. In addition to his experience as an executive, Mr. McNally has had extensive experience in the boardroom, where he has served, at various times, on the boards of Warrior Energy Services, Dalbo Holdings, EQT Midstream Partners, EQT GP Holdings, Rice Midstream Partners and EQT Corporation. He has a B.S. in Mechanical Engineering from University of Illinois, a B.A. in Mathematics from Knox College, and an M.B.A. from Tulane University Freeman School of Business. Mr. McNally brings a wealth of executive management, operational, and financial experience in the oil and gas industry to the Board.

Marguerite Woung-Chapman

Director

Marguerite Woung-Chapman has served as a director of Summit Midstream since May 2020. Ms. Woung-Chapman also serves as the Chairperson of the Nominating, Governance and Sustainability Committee of the Board and on the Compensation Committee of the Board. In 2018, Ms. Woung-Chapman served as Senior Vice President, General Counsel and Corporate Secretary of Energy XXI Gulf Coast, Inc., a NASDAQ-listed independent exploration and production company that was engaged in the development, exploitation and acquisition of oil and natural gas properties in the U.S. Gulf Coast region.

Prior to that, from 2012 to 2017, Ms. Woung-Chapman served in various capacities at EP Energy Corporation, a private company that subsequently became an NYSE-listed independent oil and gas exploration and production company, including, among others, Senior Vice President, Land Administration, General Counsel and Corporate Secretary. Ms. Woung-Chapman began her career as a corporate attorney with El Paso Corporation (including its predecessors) and served in various capacities of increasing responsibility during her tenure from 1991 until 2012, including, among others, Vice President, Legal Shared Services, Corporate Secretary and Chief Governance Officer. She has a B.S. in Linguistics from Georgetown University and a J.D. from the Georgetown University Law Center.

Commencing on June 1, 2020, Ms. Woung-Chapman has served as the Chair of the Board of Directors and President of the Girl Scouts of San Jacinto Council, which is the second largest Girl Scout council in the country. Ms. Woung-Chapman also serves on the Board of Chord Energy, where she sits on the Board’s Compensation Committee as well as Chair of Nominating & Governance Committee and the Board of Texas Pacific Land Corporation, where she serves as a member of the Board’s Audit Committee and Nominating and Governance Committee. She was previously a director on the Board of Oasis Petroleum. Ms. Woung-Chapman has valuable and extensive experience in all aspects of management and strategic direction of publicly-traded energy companies and brings a unique combination of corporate governance, regulatory, compliance, legal and business administration experience to the Board.

James Cleary

Director

James Cleary has served as a director of Summit Midstream since June 2020 and was appointed lead independent director in January 2022. Mr. Cleary serves on the Compensation Committee of the Board and on the Nominating, Governance and Sustainability Committee of the Board. Mr. Cleary has served as a Managing Director of Global Infrastructure Partners, a leading private equity infrastructure fund with over $60 billion under management and a focus on the energy, transport and water/waste industries since 2012. 

Prior to that, from 1999 until its acquisition by Kinder Morgan in 2012, Mr. Cleary served in various leadership roles for El Paso Corporation, a Fortune 500 energy company, including service as the President of Western Pipelines and President of the ANR Pipeline Company.  From 1979 until 1999, Mr. Cleary served in various capacities of increasing responsibility with Sonat Inc., a Fortune 500 energy company, including service as the Executive Vice President & General Counsel of Southern Natural Gas Company, which was Sonat's pipeline business. 

In addition to his experience as an executive, Mr. Cleary has had significant experience in the boardroom, having served on the board of the general partner of Access Midstream Partners, L.P., a large midstream master limited partnership, and he currently serves on the board of directors of Gibson Energy, Inc., a Canadian public company that transports, stores, processes and markets crude oil and refined products in Canada and the United States.  He also serves on the Board of Managers of Columbia Pipelines Holding Company, which directly owns and operates Columbia Pipelines Operating Company, LLC, Columbia Gas, and Columbia Gulf. He has a B.A. in Sociology from the College of William & Mary and a J.D. from Boston College Law School. Mr. Cleary is also NACD Directorship Certified.

Rommel M. Oates

Director

Rommel M. Oates was appointed to serve as a Director of Summit Midstream in February 2022.  Mr. Oates is the Founder, Chairman, and Chief Executive Officer of Oates Energy Solutions LLC and Refinery Calculator Inc.  Since May 2023, he has served on the Board of Supervisors of Suburban Propane Partners.  

Since 1999, Oates has been a leading pioneer in helping the world transition to a sustainable future by using hydrogen as its main energy carrier.  Oates has produced 18 patents in the field of hydrogen and is considered by many to be an expert in the area of hydrogen storage.  Since 2014, Oates has served as a board member for the International Association of Hydrogen Energy.  From 2015 to 2018, Mr. Oates served True North Venture Partners (an Ahearn, Walton, Cox family limited partnership entity) in several capacities.  From 2015 to 2016, Oates held the role of Senior Director of Commercial Development for True North’s Management Partners team.  Then from 2016 to 2018, Oates held executive leadership roles in sales, marketing and commercial development for TNVP’s portfolio company Aquahydrex Pty Ltd. 

From 2003 to 2015, Mr. Oates served in various capacities of increasing responsibility with Praxair Inc. (now Linde) including service as Director of Hydrogen and CO Product Management, Sr. Account Director for Pipeline and On-Sites, General Business Manager of Praxair Electronics Houston and several Operations and Engineering roles.  In addition, Oates values education and learning and holds an MBA and Master of Finance Degrees from Tulane University as well as a Bachelor of Science Degree (Pi Tau Sigma Honors) and Master’s of Science Degree in Mechanical Engineering from the University of Miami, Florida.

Jason Downie

Director

Jason Downie was appointed to serve on the Board on December 2, 2024. Mr. Downie is a co-founder of Tailwater Capital and has served as a Managing Partner since 2013. Prior to Tailwater, Mr. Downie was a partner from 2000 to 2012 with HM Capital where he also served on the Investment Committee. He joined HM Capital from Rice, Sangalis Toole and Wilson, a mezzanine private equity firm, where he was an Associate from 1999 to 2000.

Prior to Rice, Sangalis Toole and Wilson, Mr. Downie was an Associate in the Equity Trading Group with Donaldson, Lufkin & Jenrette from 1992 until 1997, where he was responsible for energy and transportation. With a wealth of over 28 years in investment experience, he holds board positions at several prominent companies, including Goodnight Midstream, Pivotal Petroleum Partners, Pivotal Royalties Partners, Renovo Resources, Silver Creek Midstream, Tall Oak Midstream, and Triten Energy Partners. Mr. Downie earned a BBA in 1992 and MBA in 1999, both from The University of Texas at Austin. 

Edward Herring

Director

Edward Herring was appointed to serve on the Board on December 2, 2024. Mr. Herring is a co-founder of Tailwater Capital and has served as a Managing Partner since 2013. Prior to co-founding Tailwater, Mr. Herring was a Partner with HM Capital and a member of the Investment Committee from 1998 until 2012.

Prior to HM Capital, he worked in the Investment Banking Division of Goldman, Sachs from 1993 to 1996. Mr. Herring currently serves on the boards of Ash Creek Renewables, Blue Tide Environmental, Continuus Materials, Copperbeck Energy Partners, Cureton Midstream, Freestone, Frontier Carbon Solutions, Goodnight Midstream, Pivotal Petroleum Partners, Pivotal Royalties Partners, Producers Midstream and Silver Creek Midstream. Mr. Herring earned an MBA from Harvard Business School in 1998 and a BA from Stanford University in 1993. 

Stephen Lipscomb

Director

Stephen Lipscomb was appointed to serve on the Board on December 2, 2024. Mr. Lipscomb is a Partner at Tailwater Capital and is responsible for evaluating, executing, and monitoring the firm’s investments. Prior to joining Tailwater in 2016, Mr. Lipscomb was a Senior Director with Crestwood Equity Partners from 2013 to 2016, a publicly traded midstream-focused master limited partnership. 


Mr. Lipscomb also worked for Brazos Private Equity Partners from 2009 until 2011, a middle market private equity firm with $1.4 billion of assets under management. From 2006 to 2009, he worked for JPMorgan as an analyst in their global investment banking practice. Mr. Lipscomb earned an MBA from the University of Texas in 2013 and a BS from Washington and Lee University in Mathematics and Engineering in 2006.

Drew Winston

Director

Drew Winston was appointed to serve on the Board on December 2, 2024. Since 2018, Mr. Winston has served as a Principal at Tailwater Capital where he is responsible for sourcing, evaluating, executing and monitoring the firm's investments. Prior to Tailwater Capital, Mr. Winston was the Director of Business Development & Finance at Sage Midstream, a portfolio company of Riverstone Holdings and Stonepeak Infrastructure Partners, from 2014 to 2018.

From 2010 to 2012, Mr. Winston worked for Austin Ventures, a venture capital and private equity fund. He also worked in the investment banking group at Simmons and Company International from 2008 to 2010. Mr. Winston earned an MBA from the University of Virginia Darden School of Business in 2014, where he was awarded the Frank S. Batten Scholarship and Frank Genovese Fellowship, and a BBA in Finance from Texas A&M University in 2007. 

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