Leadership
Executive Team
Lawrence V. Bruno
Chairman of the Board, President, and Chief Executive Officer
Tenure
Joined the Company in 1999
Age
65 years old
Experience and Career History
Mr. Bruno became President of the Company on February 1, 2018, and on January 1, 2019, he also assumed the position of Chief Operating Officer. On May 20, 2020, Mr. Bruno succeeded Mr. David Demshur as the Chairman of the Supervisory Board and Chief Executive Officer and has led the Company’s global operations for both of its business segments, Reservoir Description and Production Enhancement. Over the last several years, Mr. Bruno has served as a technical spokesperson for many investor presentations and panels in the oil and gas industry and has been instrumental in driving the Company’s technology innovation that will continue to be a critical strength in the years to come. Mr. Bruno previously led the Company’s global reservoir-based laboratories within the Company’s Reservoir Description segment, from July 2015 through January 31, 2018. Prior to being named as President of the Petroleum Services division in July 2015, Mr. Bruno was the General Manager of U.S. Rocks from 1999 to July 2015.
Prior to joining the Company, he was employed at an oil and gas service company for 14 years before it was acquired by the Company in 1999.
Mr. Bruno received a Master of Science degree in Geology in 1987 from the University of Houston.
Lawrence V. Bruno
Chairman of the Board, President, and Chief Executive Officer
Christopher S. Hill
Senior Vice President, Chief Financial Officer
Tenure
Joined the Company in 2006
Age
54 years old
Experience and Career History
Mr. Hill became Chief Financial Officer on May 24, 2018, after serving as Vice President, Chief Accounting Officer from May 2015 to May 2018. Since joining the Company in October 2006, Mr. Hill served in several roles including an overseas assignment based in the Netherlands while overseeing the Company’s global shared service centers and leading Investor Relations effort.
Mr. Hill started his professional career in 1993 working in Ernst & Young’s assurance practice in their Houston office, where he held the position of Manager for his last three years there. Prior to joining the Company, he worked at Halliburton from August 2000 to October 2006 as a Controller – Energy & Chemicals of the KBR Division and Corporate Director of Training and Accounting Research.
Mr. Hill is a Certified Public Accountant in the state of Texas and received a B.B.A. undergraduate degree in Accounting from Texas A&M University and later obtained an M.B.A. from Rice University’s Jones Graduate School of Business.
Christopher S. Hill
Senior Vice President, Chief Financial Officer
Gwendolyn Y. Gresham
Senior Vice President, Corporate Development & Investor Relations
Tenure
Joined the Company in 2006
Age
56 years old
Experience and Career History
Since 2016 Ms. Gresham has served as Senior Vice President, Corporate Development and Investor Relations, leading the Company’s Sustainability, Investor Relations, Risk Management, and Human Resources functions. Since joining the Company in October 2006, Ms. Gresham led the Company’s Human Resources and Sustainability efforts, as Corporate Vice President based in Amsterdam from 2013 to 2016 and Director of U.S. Human Resources from 2006 to 2013.
Prior to joining the company, Ms. Gresham worked in the healthcare industry for both Texas Children’s Hospital Integrated Delivery System and the University of Texas MD Anderson as Director of Leadership Development and Director of Human Resources, respectively. Before entering the healthcare industry, Ms. Gresham led a team of Human Resources professionals with Cox Communications primarily focused on M&A integration.
Ms. Gresham has a B.S. in Business from Lubbock Christian University and an M.B.A. from Texas Women’s University.
Gwendolyn Y. Gresham
Senior Vice President, Corporate Development & Investor Relations
Mark D. Tattoli
Senior Vice President, Secretary, and General Counsel
Tenure
Joined the Company in 2012
Age
52 years old
Experience and Career History
Mr. Tattoli became Senior Vice President, Secretary and General Counsel on July 1, 2021, after serving as Assistant General Counsel since November 2012. Mr. Tattoli oversees all aspects of the Company’s legal and compliance matters. Mr. Tattoli has 20 years of industry experience acting as in-house counsel and outside counsel for companies in the petroleum industry across all sectors, including upstream, midstream and downstream.
Prior to joining the Company, he worked in private practice initially with the law firm of Haynes & Boone LLP in its Austin and Houston, Texas offices, and most recently as a partner at the law firm of Buchanan, Ingersoll and Rooney PC in Pittsburgh, Pennsylvania. While in private practice, Mr. Tattoli advised public and private clients on mergers and acquisitions, joint venture formation and structuring, debt and equity securities offerings, and general corporate governance and transactional matters.
Mr. Tattoli has a B.S. in Chemical Engineering from the University of Notre Dame, and J.D. and M.B.A. degrees from the University of Texas at Austin.
Mark D. Tattoli
Senior Vice President, Secretary, and General Counsel
Other Members of Management
Alastair J. A. Crombie
Vice President,
Reservoir Description
Peter W. G. Boks
Vice President,
Reservoir Description
Sow Hang Teo
Vice President,
Chief Accounting Officer
J. Donald Dumas Jr.
Senior Vice President,
Production Enhancement & Business Development
Leslie Linklater
Vice President
People, Organization, and Culture
Billy Anthony
President
Owen Oil Tools
Board of Directors
Lawrence V. Bruno
Chairman of the Board, President, and Chief Executive Officer
Tenure
Joined the Company in 1999
Age
65 years old
Experience and Career History
Mr. Bruno became President of the Company on February 1, 2018, and on January 1, 2019, he also assumed the position of Chief Operating Officer. On May 20, 2020, Mr. Bruno succeeded Mr. David Demshur as the Chairman of the Supervisory Board and Chief Executive Officer and has led the Company’s global operations for both of its business segments, Reservoir Description and Production Enhancement. Over the last several years, Mr. Bruno has served as a technical spokesperson for many investor presentations and panels in the oil and gas industry and has been instrumental in driving the Company’s technology innovation that will continue to be a critical strength in the years to come. Mr. Bruno previously led the Company’s global reservoir-based laboratories within the Company’s Reservoir Description segment, from July 2015 through January 31, 2018. Prior to being named as President of the Petroleum Services division in July 2015, Mr. Bruno was the General Manager of U.S. Rocks from 1999 to July 2015.
Prior to joining the Company, he was employed at an oil and gas service company for 14 years before it was acquired by the Company in 1999.
Mr. Bruno received a Master of Science degree in Geology in 1987 from the University of Houston.
Lawrence V. Bruno
Chairman of the Board, President, and Chief Executive Officer
Martha Carnes
Lead Director, Chair of the Audit Committee
Tenure
Director since 2016
Age
64 years old
Experience and Career History
Through the course of her career, Ms. Carnes has been responsible for leading the design and execution of the market and sector strategies, business development, compensation, professional development, succession planning, and client satisfaction.
While at PwC, Ms. Carnes led the firm’s energy and mining assurance, tax, and advisory practices. She has vast experience with capital markets activities and was the lead audit partner on some of the largest merger and acquisition transactions completed in the energy sector during her time at PwC as an Assurance Partner.
Ms. Carnes retired in June 2016 after a 34-year career with PricewaterhouseCoopers LLP (“PwC”). While there, she held several leadership positions including Managing Partner of the firm’s Houston office, and Energy and Mining leader for the United States. Additionally, she served as one of PwC’s Risk Management Partners and was the United States representative on the firm’s Global Communities Board.
Business Affiliations
- Director of SunCoke Energy, Inc and Audit Committee Chair (December 2019-present)
- Director of Matrix Service Company, Audit Committee Chair, Compensation Committee and the Nominating, Governance, and Sustainability Committee Member (July 2017-present)
- Member Representative for Ohio Valley Midstream
- Member of the Board of Trustees at Texas Children’s Hospital, Operations, Planning and Philanthropy Committee Chair, Executive Committee and Audit and Compliance Committee Member
- Member of the Board of the Barbara Bush Houston Literacy Foundation.
Martha Carnes
Lead Director, Chair of the Audit Committee
Michael Straughen
Chair of the Compensation Committee and Member of the Audit Committee
Tenure
Director since 2016
Age
74 years old
Experience and Career History
Mr. Straughen served as Chief Executive of the Engineering Division of John Wood Group PLC from 2007 until 2014. As Chief Executive of the Engineering Division at John Wood Group, PLC, which had revenues of $1.8 billion and 10,000 employees, Mr. Straughen was responsible for P&L performance, HSSE, resourcing, customer relationships, strategy, and growth. As an Executive Director of a publicly traded company, he also had responsibilities for corporate governance.
From 1982 to 2007, he served in various roles, including as Group Managing Director, with AMEC PLC, an international project management and engineering services provider.
Mr. Straughen is a Chartered Engineer, having served on various industry bodies, and has also been a mentor to small businesses sharing his valuable insight on management, governance, and strategic issues.
Business Affiliations
- Board Member of the Glasgow-based Denholm Energy Services Group (current)
- Board Member of Glacier Energy Services until June 2020
- Board Member of ASCO until June 2019
- Board Member of GMS PLC until the end of 2016
Michael Straughen
Chair of the Compensation Committee and Member of the Audit Committee
Curtis Anastasio
Member of the Nominating, Governance, and Sustainability Committee
Tenure
Director since 2023
Age
68 years old
Experience and Career History
Mr. Anastasio began his career in the industry in 1988 with Ultramar plc, an integrated oil and gas company with assets principally in the United States, Canada, Latin America, the United Kingdom and Asia Pacific. Throughout his career, he has gained experience in various leadership positions in the upstream, midstream, and downstream sectors of the oil and gas industry.
At various stages over the course of his career, Mr. Anastasio has been responsible for supply, trading, transportation, marketing, business development and legal and regulatory affairs.
While at NuStar, under Mr. Anastasio’s leadership, the company grew from a small business to a Fortune 500 company, receiving many awards and recognition including being named by Fortune magazine as one the 100 Best Companies to Work for in America and Forbes Magazine’s 100 Most Trustworthy Companies.
Business Affiliations
- Chairman of GasLog Partners L.P. (current)
- Chairman of the Board Audit Committee for Par Pacific Holdings, Inc. (current)
- Chairman of the Board Audit Committee for Chemours Company (current)
- Director of the Federal Reserve Bank of Dallas (2014-2019)
- President & Chief Executive Officer of NuStar (2001-2013)
Curtis Anastasio
Member of the Nominating, Governance, and Sustainability Committee
Harvey Klingensmith
Member of the Nominating, Governance, and Sustainability Committee and the Compensation Committee
Tenure
Director since 2020
Age
72 years old
Experience and Career History
Mr. Klingensmith retired from executive office in 2019 after numerous executive leadership positions in the oil and gas industry. Mr. Klingensmith co-founded and served as Chief Executive Officer and Board member of Ajax Resources LLC, serving as CEO from its founding in July 2015 until October 2017 and on the Board until its sale in 2018.
While at Ajax, Mr. Klingensmith was instrumental in successfully putting together the $425 million financing package necessary to start Ajax; recruited key personnel needed to build and run the business; and executed key business initiatives that resulted in production growth from 2,000 to 18,500 barrels of oil equivalent per day and Ajax’s sale to Diamondback Energy for $1.24 billion.
During his tenure at Spoke and Stone Resources, Ltd., Mr. Klingensmith led efforts to raise capital, headed operations and production growth as well as gained experience with financially distressed companies during Stone’s entry into receivership and exit as Spoke before its sale to Surmont Oil and Gas in 2018.
Business Affiliations
- President of Wyatt Energy LLC. (2014-2018)
- Co-founder and CEO of Spoke Resources Ltd., including its predecessor entity Stone Mountain Resources Ltd. (2006-2018)
- President of El Paso Canada (2002-2004)
- Senior Vice President Worldwide Exploration for Coastal Oil and Gas (1994-2001)
- Vice President of Worldwide Exploration of Maxus Energy (1986-1993)
Harvey Klingensmith
Member of the Nominating, Governance, and Sustainability Committee and the Compensation Committee
Kwaku Temeng
Chair of the Nominating, Governance, and Sustainability Committee and Member of the Compensation Committee
Tenure
Director since 2021
Age
70 years old
Experience and Career History
Mr. Kwaku Temeng retired from Aramco Services Company (ASC) in Houston, Texas in May of 2021, where he served as Director of Upstream since 2007. During his tenure he was responsible for managing Saudi Aramco’s upstream technology and business programs in North America. These included cultivating business relationships, evaluating commercial opportunities, performing analyses of technology trends and best practices, and overseeing technical studies undertaken by commercial laboratories, universities, and technology centers.
Prior to his final assignment, Mr. Temeng worked for 14 years with Saudi Aramco in Saudi Arabia where he held a variety of professional, managerial, and advisory positions. He oversaw managing the company’s drilling budget development, coordination of petroleum engineering studies and served as a special advisor to senior management. He was instrumental in developing the framework for Saudi Aramco’s upstream research and development program.
In his assignments with Saudi Aramco and ASC, Mr. Temeng combined his knowledge of engineering and economics to direct production planning, budgeting, and technical studies for the world’s largest producing company. He also administered contracts and relationships with all the major oilfield services companies, and in the process has gained great insight from the client perspective into what drives successful relationships between producing companies and service providers.
Before joining Saudi Aramco, Mr. Temeng worked in the U.S. as a petroleum engineer with Exxon Company USA and Mobil Oil Corporation.
Business Affiliations
- Member of the Stanford University Earth Sciences Advisory Board
- Member of the Society of Petroleum Engineers
Kwaku Temeng
Chair of the Nominating, Governance, and Sustainability Committee and Member of the Compensation Committee
Katherine Murray
Member of the Audit Committee
Tenure
Director since 2022
Age
62 years old
Experience and Career History
Following a 33-year career serving the energy sector as a senior finance executive to large global corporations, Ms. Murray retired from executive office in 2018.
Throughout her career, Ms. Murray has been responsible for financial reporting, operational accounting, financial planning, tax, and strategic planning.
During her tenure at McDermott International, Inc., she was responsible for implementing strategies to optimize McDermott’s capital structure and cash flows, optimizing shareholders’ and analysts’ relations and communications, including outreach programs in the U.S. and Europe.
At El Paso Corporation Ms. Murray was responsible for over $600 million of annual taxes, and gained significant experience in financial reporting, internal controls, worldwide compliance, tax litigation, entity structuring and financial planning and analysis. She was also a key contributor to El Paso Corporation’s strategic initiatives, including mergers and acquisitions, dispositions, and the ultimate $3 billion sale of the business to Kinder Morgan in 2012.
Ms. Murray began her career with Arthur Andersen, serving in their energy tax practice.
Business Affiliations
- Vice-Chair and Board Member of The Foundation for The Women’s Energy Network (FWEN), Communications & Marketing Chair, Finance Committee member (current)
- Member of the Texas Society of Certified Public Accountants
Katherine Murray
Member of the Audit Committee
Governance Documents
Code of Ethical Conduct for Senior Financial Officers and Managers Adopted by the Board of DirectorsCommittee Charters
Independent Auditors
KPMG LLP
811 Main Street, Suite 4500
Houston, Texas 77002
Transfer Agent and Registrar
Computershare Trust Company, N.A.
250 Royall Street
Canton, Massachusetts 02021