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Board of Directors

Daniel W. Rabun

Chairman of the Board; Director since 2018

Committees: Compensation, Governance and Nominating

Mr. Rabun is the former Chairman of Ensco plc, an offshore drilling services company, based in London. He retired as President and Chief Executive Officer of Ensco in June 2014, having held the office of Chief Executive Officer for more than seven years and President for more than eight years. Prior to joining Ensco, Mr. Rabun was a partner with the international law firm of Baker & McKenzie LLP, where he provided legal advice to oil and gas companies. He has also been a certified public accountant since 1976.

Skills and Qualifications: Mr. Rabun brings a variety of experiences to the Board, including service as Chairman of the Board, President, and Chief Executive Officer of Ensco. His international experience, global perspective, experience with strategic acquisitions and financial acumen from having served a total of more than eight years as the business head of a public company assist the Board in the assessment and management of risks faced by oil and gas companies.

Other Public Company Boards: 3

Mr. Rabun has served on the Board of Directors of Golar LNG Ltd. since February 2015, where he is a member of the Audit Committee, Compensation Committee and Nomination Committee, and served as the non-executive Chairman from September 2015 to September 2017. He has also served on the Board of Directors of APA Corporation (formerly known as Apache Corporation) since May 2015, where he is currently a member of the Corporate Governance and Nominating Committee and the Audit Committee. Mr. Rabun was appointed to the Board of Directors of Borr Drilling Limited in April 2023.

Heidi S. Alderman

Director since 2020

Committees: Compensation, Governance and Nominating

Ms. Alderman is the former Senior Vice President, Intermediates of BASF Corporation (a global chemical manufacturing company), a position she held from 2016 until her retirement in 2019.  Prior to this role, Ms. Alderman held the positions of Senior Vice President, North American Petrochemicals from 2011 to 2016; Senior Vice President, North American Procurement from 2008 to 2011; Vice President, Functional Polymers from 2005 to 2008; and Business Director, Polymers from 2003 to 2005, all at BASF SE. 

Skills and Qualifications: Ms. Alderman’s 39-year career in chemicals manufacturing brings a unique and valuable perspective to the Board. She also holds a bachelor's degree in chemical engineering from Stevens Institute of Technology and a master's degree in chemical engineering from Drexel University, providing a depth of expertise for the Company’s expanded business. Ms. Alderman has held various positions in business, operations, research, procurement, product and marketing management at BASF, Air Products and Chemicals Inc. and Rohm and Haas, in addition to completing the University of Pennsylvania Wharton Management Program in business administration. She served on the Board of Directors of Olin Corporation from 2019 to 2023, where she was a member of the Compensation Committee and Directors and Corporate Governance Committee. Recognized as NACD Directorship Certified® by the National Association of Corporate Directors, Ms. Alderman brings significant and valuable leadership, operational, innovation, business transformation and human capital and talent development skills to the Board, as well as a global business management perspective adept at strategy development and grounded in ESG considerations.

Other Public Company Boards: None

Mamatha Chamarthi

Director since 2018

Committees: Audit

Ms. Chamarthi is the Head of Software Business & Product Management (Global, Americas, Asia) of Stellantis N.V. where she was previously Chief Information Officer – North America and Asia Pacific. Prior to Stellantis, Ms. Chamarthi served as Senior Vice President and Chief Digital Officer of ZF Friedrichshafen AG; Senior Vice President, Chief Digital Officer and Chief Information Officer of ZF TRW Automotive Holdings Corporation; Vice President and Chief Information Officer of CMS Energy Corporation; and, Senior IT Executive of Daimler Financial Services.

Skills and Qualifications: Ms. Chamarthi’s more than 20 years of domestic and global technology experience in the energy, financial services and automotive industries makes her a valuable resource for the Board. She brings to the Board significant experience collaborating with boards of directors, including technology and audit committees, as an officer of ZF Friedrichshafen AG, ZF TRW Automotive Holdings, CMS Energy and Daimler Financial. Her innovative technology and transformation experience provide her with unique insights into the highly-engineered technologies ChampionX provides to its customers.

Other Public Company Boards: None

Carlos Fierro

Director since 2023

Committees: Audit

Mr. Fierro is currently a Senior Advisor to Guggenheim Securities, a division of Guggenheim Partners, with a focus on the energy sector, a position he has held since April 2016. Previously, he was a Managing Director and Global Head of the Natural Resources Group of Barclays. Prior to Barclays, Mr. Fierro spent 11 years at Lehman Brothers, where his last role was as the Global Head of the Natural Resources Group, and he began his career as a transactional lawyer at Baker Botts L.L.P.

Skills and Qualifications: Mr. Fierro’s extensive experience in the energy industry brings a unique and valuable perspective to the Board. Throughout his banking career, Mr. Fierro participated in the development, structuring, negotiation and execution of numerous merger, acquisition, divestiture, restructuring and joint venture transactions. In the natural resources sector, these included transactions for companies involved in exploration and production, refining and marketing, oil field services, mining, pipelines, petrochemicals and coal. In his law practice, Mr. Fierro devoted his time principally to oil and gas transactions, including hostile takeovers, acquisitions, divestitures, public and private debt and equity financing transactions, corporate restructurings and proxy fights. Together with his prior Board of Director service with energy companies, Mr. Fierro offers significant leadership, strategic planning, international, corporate governance, risk assessment and management and industry perspective to assist the Board in the assessment and management of the specific risks and opportunities faced by the Company.

Other Public Company Boards: None

Gary P. Luquette

Director since 2018

Committees: Compensation, Governance and Nominating

Mr. Luquette previously served as President and Chief Executive Officer of Frank’s International N.V., a global provider of engineered tubular services to the oil and gas industry. He also served as a member of Frank’s Supervisory Board. In addition, Mr. Luquette served as President of Chevron North America Exploration and Production, a unit of Chevron Corporation. He began his career with Chevron in 1978 and, prior to serving as President, held several other key exploration and production positions in Europe, California, Indonesia and Louisiana.

Skills and Qualifications: Mr. Luquette brings a depth of business, industry and strategic planning experience to the Board, including his two years as President and Chief Executive Officer at Frank’s International N.V., his seven years as President of Chevron North America Exploration and Production, along with his holding several key exploration and production positions at Chevron. Mr. Luquette’s international experience also adds a valuable global perspective to the Board. Mr. Luquette’s extensive board committee participation, including his previous service as non-executive Chairman of the Board, and membership on the Compensation Committee of McDermott International, Inc. and his prior experience on the Health, Safety, Environment and Corporate Responsibility Committee at Southwestern Energy Company, makes him well suited to advise the Board on various corporate governance matters.

Other Public Company Boards: None

Elaine Pickle

Director Since 2023

Committees: Audit

Ms. Pickle was a senior audit partner at Ernst & Young LLP (“EY”) until her retirement in 2021. She joined EY in 1986 and served as a National Professional Practice Partner from 2014 to 2018. Ms. Pickle is a certified public accountant and member of the American Institute of Certified Public Accountants. She has served on the board and development committee of Theatre Under the Stars since 2018.

Skills and Qualifications:  Ms. Pickle’s extensive experience, and broad understanding and perspective of the energy industry in the United States and throughout the world provides valuable expertise and insights to the Board. She has served as audit partner for a variety of SEC registrants, spanning almost all aspect of the energy industry. In Ms. Pickle’s role as National Professional Practice Partner, she evaluated and had oversight for technical accounting, auditing and SEC reporting matters as well as quality initiatives in the Southwest region. She has served as a technical subject matter specialist on a variety of technical accounting and SEC reporting issues, including adoption of new accounting standards, matters requiring consultations on highly complex or judgment evaluations, and in support to clients and engagement teams on SEC communications and registrations. Ms. Pickle is NACD Directorship Certified® and well-suited to advise the Board on oversight of financial, accounting, auditing and corporate governance matters, as well as utilizing her global industry experience to provide ESG, strategy development and risk assessment and management oversight.

Other Public Company Boards:  1

Ms. Pickle has served on the Board of Directors of DT Midstream, Inc. since 2021 where she is the Chair of the Audit Committee and is a member of the Finance Committee and the Corporate Governance Committee.

Stuart Porter

Director Since 2020

Committees: Compensation

Stuart Porter founded Denham Capital in 2004 and is a Managing Partner as well as Denham’s Chief Executive Officer and Chief Investment Officer. Mr. Porter holds a Bachelor of Arts from the University of Michigan and a Master of Business Administration from the University of Chicago Booth School of Business.

Skills and Qualifications: Mr. Porter brings three plus decades of experience evaluating, investing and advising companies all along the energy value chain. In his current and previous roles, he has overseen the management of 40 upstream, midstream and oilfield service companies representing in excess of $3.5 billion of invested capital. Additionally, Mr. Porter has significant global experience, managing offices in London and Perth Australia for Denham Capital as well as deploying investment capital across more than 25 portfolio companies in Africa, Australasia, and North and South America. In Mr. Porter’s previous roles as a founding partner of Sowood Capital Management LP and Vice President and Portfolio Manager at Harvard Management Company, Inc., Bacon Investments, at J. Aron, a division of Goldman Sachs, and at Cargill Mr. Porter oversaw both trading and investment portfolios in energy in both the public and private sectors.

Other Public Company Boards: 1

Member of the Board of Directors of GameSquare Holdings, Inc.

Sivasankaran "Soma" Somasundaram

Director since 2018

Committees: None

Sivasankaran “Soma” Somasundaram is President and Chief Executive Officer of ChampionX and serves on the Company’s Board of Directors. Soma has led the Company in these roles since its spin-off from Dover Corporation (“Dover”) in 2018 and through its transformational merger in 2020 when the Company added Chemical Technologies to its portfolio and changed its name to ChampionX Corporation.

Prior to the Company’s spin-off from Dover, Soma was vice president of Dover and president and CEO of Dover Energy. He held a number of other senior executive leadership roles at Dover, including executive vice president of Dover Energy, executive vice president of Dover Fluid Management, president of Dover’s Fluid Solutions Platform, president of Dover’s Gas Equipment Group and president of Dover’s RPA Process Technologies business. 

Before joining Dover in 2004, Soma served in various global leadership roles at GL&V Inc. and Baker Hughes Inc.  

Soma was named a 2022 Most Admired CEO by the Houston Business Journal, and he was recognized by the Energy Workforce & Technology Council as the 2022 recipient of its DEI Champion Award for his commitment and advocacy for diversity, equity and inclusion in the energy services and technology industry. In 2023, he was named as a member of the National Petroleum Council, a federally chartered advisory committee whose members are selected and appointed by the U.S. Secretary of Energy.

Soma was named to the Board of Directors of Lennox International Inc., including the Board Governance Committee and Compensation and Human Resources Committee, effective March 15, 2024. He served on the Board of Directors of Magellan Midstream Partners, an NYSE-listed partnership, from May 2022 until its merger with ONEOK, Inc. in September 2023, where he was a member of the Compensation Committee and Nominating and Governance Committee.

He received a bachelor’s degree in mechanical engineering from Anna University and a master’s degree in industrial engineering from the University of Oklahoma. In addition, Soma has a strong global business management background having lived and worked in Asia, Australia, Europe, and North America.

Other Public Company Boards: Lennox International Inc.

Committee Composition

*Financial expert

Audit Committee

Mamatha Chamarthi

Carlos Fierro*

Elaine Pickle* (Chair)

Compensation Committee

Heidi S. Alderman

Gary P. Luquette (Chair)

Stuart Porter

Daniel W. Rabun

Governance & Nominating Committee

Heidi S. Alderman

Gary P. Luquette

Daniel W. Rabun (Chair)


Contact the board of directors or report your concerns

At ChampionX, we understand that our success depends on our reputation for ethical business performance. Each day, we are expected to perform our jobs honestly, diligently and with integrity. For this reason, we have developed the ChampionX Corporation Code of Business Conduct and Ethics (our "Code"). Our Code is designed to assist each of us in upholding our valued reputation by engaging in ethical, responsible and legal business practices in all of our operations throughout the world.

Contact us to access our Code of Business Conduct and Ethics.

Our Code of Business Conduct and Ethics includes information on how you can ask a question or voice a concern about our business. See the section "Ask Questions and Voice Concerns."

In the US: Call 1-844-742-7279 or go to

International: Go to You can also report by phone if outside the U.S. by going to and choosing "report by phone."

Your report through EthicsPoint will be handled confidentially.

You may also send a letter with relevant documents to:

ChampionX Corporation
2445 Technology Forest Blvd.
Building 4, 9th Floor
The Woodlands, TX USA 77381
Attention: Law Department

You may report anonymously, where local law permits.

If you wish to communicate with non-management directors or the board of directors, please mention that request in your communication to ChampionX or through EthicsPoint.

All matters reported through the ChampionX Global Hotline or the ChampionX Law Department under these provisions will be subject to ChampionX's "Whistleblower and Non-Retaliation Policy."

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