Leadership

The knowledgeable, experienced and strategic management team and Board of Directors at Pioneer guide the company's success. Learn more about our leadership by clicking a name below and by visiting our Governance section.

Management Team

Timothy L. Dove »

President and Chief Executive Officer

Timothy L. Dove

President and Chief Executive Officer

Tim Dove is president and chief executive officer of Pioneer Natural Resources. He is a member of Pioneer’s management committee and also serves on Pioneer’s board of directors.

Dove joined Parker & Parsley in 1994 as vice president of business development and was promoted to senior vice president in 1996 where he served until the formation of Pioneer in 1997. With Pioneer, Dove held the position of executive vice president - business development until 2000 when he was promoted to executive vice president and chief financial officer. In 2004, Dove was named the Company’s president and chief operating officer. Dove was elected to the board of directors in 2013. In 2017, he was named president and chief executive officer.

Prior to joining Parker & Parsley, Dove worked for Diamond Shamrock Corporation and a successor, Maxus Energy Corporation. Dove holds a Bachelor of Science degree in mechanical engineering from the Massachusetts Institute of Technology and a Master of Business Administration from the University of Chicago.

With Dove’s leadership and guidance, Pioneer has become one of the most efficient operators among the U.S. shale resource companies. While playing an important part in Pioneer’s strategic vision, Dove led the teams who advanced horizontal drilling and completion technology into the Company’s core assets in the Permian Basin and Eagle Ford Shale.

Dove currently serves on the Corporate Development Committee of MIT and is a member of the Board of Trustees of the Jesuit College Preparatory School of Dallas Foundation. He was also a member of the Dream Dallas Advisory Council for Habitat for Humanity. He previously served as a trustee for the KidLinks Foundation, as chairman of the Dallas Wildcat Committee and as president of the Dallas Petroleum Club board of directors.

Mark S. Berg »

Executive Vice President, Corporate/Vertically Integrated Operations

Mark S. Berg

Executive Vice President, Corporate/Operations

In April 2005, Mark Berg joined Pioneer Natural Resources to serve as Executive Vice President & General Counsel. He was promoted to Executive Vice President, Corporate in January 2014, named Executive Vice President, Corporate/Operations in August 2015 and became Executive Vice President, Corporate/Vertically Integrated Operations in May 2017. Berg’s corporate responsibilities include oversight of Legal, Land, Regulatory Affairs, Government Affairs and Corporate Communications. In operations, he is responsible for Pioneer’s vertically integrated service companies: Pioneer Pumping Services, Premier Silica and Pioneer Well Services.

Berg began his career in 1983 with the Houston-based law firm of Vinson & Elkins L.L.P. and served as a partner from 1990 through 1997. He served as Executive Vice President, General Counsel and Secretary of American General Corporation, a Fortune 200 diversified financial services company, from 1997 through 2001. Subsequent to the sale of American General to American International Group, Berg was appointed Senior Vice President, General Counsel and Secretary of Hanover Compressor Company, a NYSE company specializing in natural gas compression and processing.

Berg received his Juris Doctor, with honors, from the University of Texas School of Law, and graduated magna cum laude and Phi Beta Kappa with a Bachelor of Arts in Public Policy from Tulane University.

He is a member of the State Bar of Texas. Berg also served as Chairman on the Board of Dallas CASA.

Chris J. Cheatwood »

Executive Vice President and Chief Technology Officer

Chris J. Cheatwood

Executive Vice President and Chief Technology Officer

Cheatwood was elected the Company’s Executive Vice President, Business Development and Geoscience in November 2011 and became Executive Vice President and Chief Technology Officer in May 2017. Cheatwood had previously served the Company as Executive Vice President, Business Development and Technology since February 2010, as Executive Vice President, Geoscience from November 2007 until February 2010, as Executive Vice President - Worldwide Exploration from January 2002 until November 2007, as Senior Vice President – Worldwide Exploration from December 2000 to January 2002, and as Vice President - Domestic Exploration from July 1998 to December 2000. Before joining the Company, Cheatwood spent ten years with Exxon Corporation.

Cheatwood is a graduate of the University of Oklahoma with a Bachelor of Science degree in Geology and earned his Master of Science degree in Geology from the University of Tulsa.

Richard P. Dealy »

Executive Vice President and Chief Financial Officer

Richard P. Dealy

Executive Vice President and Chief Financial Officer

Dealy was elected the Company’s Executive Vice President and Chief Financial Officer in November 2004. Dealy held positions for the Company as Vice President and Chief Accounting Officer from February 1998 to November 2004, and Vice President and Controller from August 1997 to January 1998. Dealy joined Parker & Parsley, a predecessor of the Company, in July 1992 and was promoted to Vice President and Controller in 1996, in which position he served until August 1997. He is a Certified Public Accountant, and before joining Parker & Parsley, he was employed by KPMG LLP. Dealy graduated with honors from Eastern New Mexico University with a Bachelor of Business Administration degree in Accounting and Finance.

J.D. Hall »

Executive Vice President, Permian Operations

J.D. Hall

Executive Vice President, Permian Operations

Joey Hall is Executive Vice President, Permian Operations for Pioneer Natural Resources and a member of its Management Team. He is responsible for planning, development and operations activities in the Permian Basin, where the Company has the largest Spraberry/Wolfcamp acreage position with decades of drilling inventory.

Hall’s rise to Pioneer’s senior leadership team began in 1989, when he joined Pioneer’s predecessor company, MESA, Inc. He held several positions in worldwide facilities, eventually managing offshore, onshore and international projects across the Company, including the Falcon deep water development in the Gulf of Mexico.

Hall was then assigned as Operations Manager in Alaska, where he was responsible for all drilling, production and construction activities. Under his leadership, Pioneer completed the Oooguruk development, establishing Pioneer as the first independent oil and gas company to produce on the North Slope of Alaska.

When Pioneer turned its focus to developing its Eagle Ford Shale assets, Hall was tasked with leading the capital-intensive development, beginning as Vice President, Eagle Ford Asset Team, then to Sr. Vice President, South Texas Operations. Hall’s attention shifted to the Permian Basin when he became Executive Vice President, Southern Wolfcamp Operations. In 2015, he assumed leadership over all of Pioneer’s Permian Operations.

Hall sits on the board of the Dallas Area Habitat for Humanity, Inc. In 2016, he was inducted into the Texas Tech University Petroleum Engineering Academy.

Hall has a Bachelor of Science degree in Mechanical Engineering from Texas Tech University and is a Registered Professional Engineer in the State of Texas.

Kenneth H. Sheffield, Jr. »

Executive Vice President, Operations/Engineering/Facilities

Kenneth H. Sheffield, Jr.

Executive Vice President, Operations/Engineering/Facilities

In August 2015, Ken Sheffield was appointed Executive Vice President STAT, WAT & Corporate Engineering and became Executive Vice President, Operations/Engineering/Facilities in May 2017. He is responsible for overseeing the South Texas Asset Team, Western Asset Team and Corporate Engineering. Sheffield is also a Member of Pioneer’s Management Committee.

Prior to his current role, he was Executive Vice President, South Texas Operations. Sheffield has also served as Senior Vice President, Operations & Engineering to lead the Rockies, Mid-Continent and Barnett Shale Asset Teams, as well as Pioneer's corporate engineering and sustainable development efforts. Ken has also served as Vice President, Corporate Engineering.

Beginning in 2004, Sheffield served as President of Pioneer’s wholly owned Alaska subsidiary to establish and grow Pioneer’s operations in the state. In June, 2008, production commenced from the Oooguruk oil field in the shallow waters of the Beaufort Sea, establishing Pioneer as the first independent operator in the history of Alaska’s North Slope.

Sheffield has served Pioneer in leadership positions since the company’s founding in 1997. He served as President and Vice President of Pioneer’s wholly owned Canadian subsidiary from 1999 to 2003. During 1997 and 1998, he served as Vice President & General Manager of the Gulf Coast Division in Houston. Earlier in his career with Mesa, a predecessor company to Pioneer, Ken served as Vice President, Acquisitions & Development during 1997 and Manager, Acquisitions & Engineering in 1996. Ken worked in a number of supervisory and technical positions from 1982 to 1996 with assignments in drilling, production, reservoir engineering and acquisitions.

Sheffield holds a Bachelor of Science degree in Petroleum Engineering from Texas A&M University and is a member of the Society of Petroleum Engineers. In 2016, he was inducted into the Texas A&M Academy of Distinguished Graduates of the Harold Vance Department of Petroleum Engineering.

Sheffield currently serves on the Texas A&M Petroleum Engineering Industry Board and the board of Bryan’s House, a non-profit organization in Dallas, Texas.

William F. Hannes »

Senior Vice President, Special Projects

William F. Hannes

Senior Vice President, Special Projects

In September 2014, Hannes was appointed Senior Vice President, Special Management Committee Advisor. In this role, he will provide strategic advice to Pioneer’s Management Committee and oversee special projects. Prior to this position, he served as Executive Vice President of Southern Wolfcamp Operations for three years.

January 2010 through 2012 he was Executive Vice President, South Texas Operations. November 2005 through December 2009, he was Executive Vice President, Business Development. He was Vice President, Engineering & Development from June 2001 through October 2005 and General Manager, International Production from 1998 to 2001.

Hannes is an Officer of Pioneer Natural Resources and an advisory member of the Management Committee. He joined Pioneer in 1997 as Director of Business Development, and prior to Pioneer, he spent 16 years with Mobil and Superior Oil & Gas Co. in a variety of engineering and operations positions.

Hannes earned his Bachelor of Science in Petroleum Engineering from Texas A&M University.

Frank E. Hopkins »

Senior Vice President, Investor Relations

Frank E. Hopkins

Senior Vice President, Investor Relations

Frank Hopkins joined Pioneer Natural Resources in 2005 as Vice President, Investor Relations. He communicates Pioneer’s strategies, business plans and performance to the investment community.

Earlier in his career, Hopkins was with Exxon Mobil Corporation where he served as General Manager, Strategic Planning for the Global Services Company and previously as Deputy Manager, Investor Relations. With predecessor Mobil Corporation, he served in various capacities including Manager, Investor Relations and Assistant Controller.

He earned his Bachelor of Science in Business Administration from Penn State University and also participated in the executive education program at the Kellogg School of Management of Northwestern University.

Hopkins is a member of the National Investor Relations Institute and the Dallas Petroleum Club.

Mark H. Kleinman »

Senior Vice President and General Counsel

Mark H. Kleinman

Senior Vice President and General Counsel

Mark Kleinman joined Pioneer Natural Resources in June 2005 as Vice President, Corporate Secretary and Chief Compliance Officer, and in January 2014, he was named Senior Vice President and General Counsel. He serves as a Member of the Pioneer Management Committee.

As General Counsel, Kleinman is responsible for all aspects of Pioneer’s legal function and support for Pioneer’s Board of Directors.

Kleinman began his career in 1986 as an associate with the Dallas-based law firm of Jackson Walker L.L.P. He served as Assistant General Counsel of Sterling Software, Inc., a NYSE company supplying computer software and services worldwide, from 1996 through its acquisition in 2000 by Computer Associates International, Inc., and as Vice President and General Counsel of Inet Technologies, Inc., a NASDAQ-traded global provider of communications software products, from 2000 through its acquisition in 2004 by Tektronics, Inc.

Kleinman received his Juris Doctor, with honors, from The University of Texas School of Law, where he served on the editorial board of The Texas Law Review. He graduated with a Bachelor of Arts in Government from The University of Texas.

He is a member of the State Bar of Texas, and he served on the New York Stock Exchange Commission on Corporate Governance, which issued its final report in 2010.

Todd C. Abbott »

Vice President, Permian Infrastructure Development and Operations

Todd C. Abbott

Vice President, Permian Infrastructure Development and Operations

Todd Abbott was appointed Vice President, Permian Infrastructure Development and Operations of Pioneer Natural Resources in November 2016. He is responsible for Pioneer’s support infrastructure including water, power and gas processing facilities.

Abbott joined Pioneer in 2003 as Senior Analyst, Acquisitions and Divestitures, and then moved to Worldwide Operations. In 2005, he was promoted to Vice President, Corporate Finance. From 2011 to 2013, he served as President of Pioneer’s Alaska division. Abbott was Vice President, Permian Operations from 2013 to August 2014. He served as Vice President, Finance and Treasurer of Pioneer Natural Resources from September 2014 to November 2016.

Prior to working for Pioneer, Abbott was a Financial Analyst with Citigroup and an Engineering Consultant with Halff Associates.

Abbott graduated from Texas A&M University with a Bachelor of Science in Civil Engineering before earning a Master of Business Administration from Southern Methodist University (SMU), Edwin L. Cox School of Business.

Abbott is a current member of the Advisory Board for the Materials Science and Engineering Department at Texas A&M University. He has previously served on the board of the Alaska Resource Development Council, and was active in the Alaska Oil & Gas Association. In 2013, he was honored as an Outstanding Young Alumnus of SMU.

John C. Distaso »

Vice President, Marketing

John C. Distaso

Vice President, Marketing

Distaso joined Pioneer Natural Resources in June 2012 as Vice President of Marketing and is responsible for commercial sales of products (crude oil, condensate, NGL’s and natural gas) and downstream infrastructure planning to process, transport and fractionate products prior to final disposition.

Distaso has 30 years of industry experience. Prior to joining Pioneer, he held senior executive and managerial trading and marketing positions at Mobil Oil Corporation for 15 years and similar positions at Apache and Devon Energy. Distaso was most recently with Deloitte, working for the Minister of Petroleum in the Republic of South Sudan to market 300 MBOPD of crude, resulting in the country’s first $3 billion of oil revenues.

Distaso has experience in physical and paper trading, term and spot negotiations, cargo tanker shipping, transportation pipelines, processing facilities and storage operations. His experience encompasses all aspects of mid-stream and downstream marketing, and he has led multiple domestic and international Marketing departments.

Distaso received his Master of Business Administration from San Diego State University, a Bachelor of Science in Business from University of California Berkeley and a Bachelor of Arts in Philosophy from University of California San Diego.

Teresa A. Fairbrook »

Vice President and Chief Human Resources Officer

Teresa A. Fairbrook

Vice President and Chief Human Resources Officer

In March 2016, Fairbrook was appointed Vice President and Chief Human Resources Officer of Pioneer Natural Resources.

She is responsible for providing leadership and accountability for all aspects of human resources, ensuring consistency and quality across Pioneer’s business units.

Fairbrook joined Pioneer in 1999 as an HR Generalist and has held various positions in the Company since, including Compensation Manager, HR Director, Compensation & Employee Relations Director and HR Department Director. In January 2013, she was appointed Vice President, Human Resources.

Prior to joining Pioneer, Fairbrook was in human resources at Dal-Tile Corporation in Dallas, Texas, where she held a variety of roles in employee relations, recruiting and benefits.

In 1996, she received a Bachelor of Business Administration degree from St. Mary’s University in San Antonio, Texas, with an emphasis in Human Resource Management.

A Certified Compensation Professional, Fairbrook is involved in industry-related organizations, including E-27 (an oil and gas industry pier group focused on human resources, compensation and benefits) and served as the past Chairman of the E-27 Committee. Fairbrook oversees the Company’s diversity and inclusion efforts, actively supporting Pioneer’s family-friendly workplace culture.

Robert C. Hagens »

Vice President, Land and Regulatory Affairs

Robert C. Hagens

Vice President, Land and Regulatory Affairs

In August 2015, Hagens assumed the role of Vice President, Land and Regulatory Affairs with Pioneer Natural Resources. He is responsible for managing the exploration, development, acquisition activities and regulatory affairs for Pioneer Natural Resources.

Hagens served as Vice President, Land with Pioneer Natural Resources from May 2008 to August 2015. From November 2005 until May 2008, he served as Vice President of Land, Pioneer Natural Resources USA subsidiary.

Prior to joining Pioneer, Hagens served as US Onshore Land & Regulatory Manager for BP America Production Company from March 2003 to October 2005. He also worked as a Portfolio Analyst and Senior Advisor from October 2000 to February 2003.

Earlier in his career, he worked with Vastar Resources, Inc. as US Gulf Coast Land Manager from September 1997 to September 2000. From 1983 to 2000, he held various positions with Atlantic Richfield Company and Vastar.

Hagens has a Bachelor of Business Administration (PLM) from the University of Texas at Austin. Hagens is a member of and certified by the American Association of Professional Landmen.

Paul McDonald »

Vice President, Vertically Integrated Services

Paul McDonald

Vice President, Vertically Integrated Services

In August 2015, McDonald was appointed Vice President, Vertically Integrated Services of Pioneer Natural Resources. Prior to his current role, McDonald served as Vice President of Operations, Southern Wolfcamp Asset Team.

McDonald has been with the Company since it was formed in 1997 and has over 30 years of industry experience. Earlier in his career, he held various engineering and management positions with Superior Oil, Mobil and Parker & Parsley.

McDonald has a Bachelor of Science degree in Chemical Engineering from Texas Tech University and a Master of Business Administration from Southern Methodist University.

He is a registered professional engineer in the state of Texas and has served on the Society of Petroleum Evaluation Engineers (SPEE) National Board.

Margaret M. Montemayor »

Vice President and Chief Accounting Officer

Margaret M. Montemayor

Vice President and Chief Accounting Officer

Montemayor was elected the Company’s Vice President and Chief Accounting Officer effective March 2014. Montemayor had previously served the Company as Vice President and Corporate Controller since January 2014, Corporate Controller from April 2012 to December 2013, and Director of Technical Accounting and Financial Reporting from June 2010 to March 2012. Prior to joining the Company, Montemayor served as Manager at PricewaterhouseCoopers LLP since June 2006. Montemayor graduated from St. Mary’s University in San Antonio, Texas, with a Bachelor of Business Administration degree in Accounting and a Master of Business Administration.

Thaddeus J. Owens »

Vice President, Communications and Government Relations

Thaddeus J. Owens

Vice President, Communications and Government Relations

In September 2014, Tadd Owens was named Vice President, Communications and Government Relations for Pioneer Natural Resources. Owens is responsible for corporate communications oversight in addition to managing the Company’s government affairs activities in Washington, D.C., and in the states in which the Company operates.

Owens previously served as Vice President, Government Affairs, for one year after serving for three years as Director, Government Affairs, where he managed the Company’s government affairs work in Texas. He joined Pioneer in November 2006 as Director, Government & Public Affairs for the Company’s Alaska division.

Prior to joining Pioneer, he served for six years as the Executive Director of the Resource Development Council for Alaska, Inc., an Alaska business association representing the oil and gas, mining, timber, tourism and fisheries industries.

Owens graduated with honors from Carleton College in Northfield, Minnesota, with a Bachelor of Arts degree in Political Science.

Owens currently serves on the boards of the Texas Independent Producers and Royalty Owners Association, the South Texas Energy and Economic Roundtable, the Royalty Owners and Producers Educational Coalition and the Dallas Chapter of the Juvenile Diabetes Research Foundation.

Thomas D. Sheffield »

Vice President, Health, Safety and Environment

Thomas D. Sheffield

Vice President, Health, Safety and Environment

Tom Sheffield is Vice President of Health, Safety and Environment for Pioneer Natural Resources. He is responsible for the Environmental, Sustainable Development, Safety, and Operations Excellence Training groups.

In 1988, Sheffield joined Pioneer’s predecessor, Parker & Parsley, holding various positions in field production operations. Beginning in 1992, Sheffield worked as an exploitation and exploration geologist in various basins throughout North America. In 2002, Sheffield joined Pioneer’s business development team, where he was involved in various acquisition targets and evaluations, including the Evergreen merger in 2004.

Sheffield was appointed Pioneer’s Raton Basin asset manager in 2004. In 2008, he was promoted to Vice President of the Rockies Asset Team and was eventually named Vice President of Pioneer’s Western Asset Team.

Sheffield is a graduate of the University of Texas, Permian Basin, where he earned both a Bachelor of Science and a Master of Science in Geology.

During his tenure in Colorado, Tom served as a board member and chairman for both the Western Energy Alliance and the Colorado Oil and Gas Association. He is a member of the American Association for Petroleum Geologists (AAPG) and is active in local charities.

Tom D. Spalding »

Vice President, Geoscience

Tom D. Spalding

Vice President, Geoscience

Spalding serves as Vice President, Geoscience, providing oversight for geoscience across Pioneer and managing subsurface geoscience and reservoir engineering integration. Prior to his current role, he served as Vice President, Permian Subsurface from September 2014 and managed the regional subsurface geoscience and reservoir engineering integration for the Permian Division since April 2011.

Spalding has served Pioneer in various positions since 1997, including Vice President Geoscience Technology in 2010, Vice President North America Exploration in 2004 and Offshore Exploration Manager in 1998.

Earlier in his career, Spalding spent 16 years with Mobil working as an exploration and production geoscientist for domestic divisions in Dallas, Houston and New Orleans. He completed his Mobil career working in their international division with emphasis on West Africa exploration. He has a Master of Science degree and a Bachelor of Science degree in Geology from the University of Kentucky.

He has been a member of the American Association of Petroleum Geologists since 1981, and current or past member of the Dallas Geological Society, Houston Geological Society, and New Orleans Geological Society. Spalding is licensed as a Professional Geoscientist in the state of Texas.

Susan A. Spratlen »

Vice President, Permian Affairs

Susan A. Spratlen

Vice President, Permian Affairs

Spratlen has served as a Vice President of Pioneer Natural Resources since 1999, having joined the company’s predecessor, Parker & Parsley Petroleum Company, in 1990 as Director of Investor Relations. In 1999, she was named Vice President, Corporate Communications and Investor Relations. Beginning in 2005, she served as Vice President of Communications and Public Affairs, and in 2011, her responsibilities were expanded to include Sustainability.

Spratlen is responsible for Pioneer’s national, state and local Communication and Public Relations strategies, including internal and external communications, media relations, public engagement, advertising, employee volunteer programs and corporate philanthropy. She also coordinates with the Sustainable Development and other departments to develop and execute strategies related to Sustainability and public engagement regarding sustainable oil and natural gas development practices.

She serves and advises a number of national and state industry organizations and initiatives focused on education and public engagement regarding sustainable development practices and the industry’s societal impacts. These initiatives also promote the benefits of expanded use of domestic natural gas for power generation and transportation. She serves on national committees with America’s Natural Gas Alliance and chairs that organization’s public engagement committee for the state of Texas. The Texas Natural Gas Now campaign is a major project of the Texas public engagement committee of ANGA.

Spratlen is also promoting collaborative industry communications initiatives in the Permian Basin and Eagle Ford Shale, Pioneer’s primary operating areas. She is on the steering committee and governing board for a new organization in Texas representing an alliance of energy consumers, producers, services and communities.

Spratlen is a Certified Public Accountant, and prior to joining the Company, she worked for KPMG. She graduated Summa Cum Laude from Angelo State University and holds a BBA degree in Accounting.

Stephanie D. Stewart »

Vice President and Chief Information Officer

Stephanie D. Stewart

Vice President and Chief Information Officer

Stewart joined Pioneer Natural Resources in June 2014 as Vice President and Chief Information Officer. Stewart has more than 20 years of information technology experience in the energy industry. Before joining Pioneer, she served as Vice President of E&P Data and Analytics and Strategic Integration at Devon Energy at the end of her 12-year tenure there. Prior to Devon, she worked at Williams Energy for four years and BP Amoco for three years.

In her current role, Stewart is responsible for the Information Technology (IT) organization, ensuring IT alignment with the business strategy and for providing innovative technical solutions. She is also an Advisory Member of Pioneer’s Management Committee.

Stewart earned a Bachelor of Business Administration from the University of Oklahoma and has her Executive MBA in Energy from the University of Oklahoma’s Price College of Business.

She participated as an Executive Board Member for the Lyric Theatre of Oklahoma and is a Board Member for the University of Oklahoma Tip-In Club. Stewart was also a member of the Passion Team for the American Heart Association Go Red for Women.

Thomas J. Murphy »

Corporate Secretary

Thomas J. Murphy

Corporate Secretary

In October 2007, Murphy joined Pioneer Natural Resources to serve as Associate General Counsel - Corporate & Securities. He was named Corporate Secretary in August 2015.

Murphy also served as Secretary of the general partner of Pioneer Southwest Energy Partners L.P. (PSE), a majority-owned, publicly traded subsidiary of Pioneer Natural Resources, from April 2008 until Pioneer’s acquisition of PSE in December 2013.

Murphy began his career in 1987 with the Dallas-based law firm of Jackson Walker L.L.P., focusing in the areas of securities, finance and corporate governance. He received his B.S. in Management Science from Georgia Tech in 1983 and his J.D. and M.B.A. from the University of Texas in 1986.

Board Of Directors

Scott D. Sheffield »

Executive Chairman of the Board

Scott D. Sheffield

Executive Chairman of the Board

Scott Sheffield held the position of Chief Executive Officer for the Company from August 1997 through December 2016. He assumed the position of Chairman of the Board of Directors for the Company in August 1999. He was President of the Company from August 1997 to November 2004. Mr. Sheffield is a distinguished graduate of The University of Texas with a Bachelor of Science degree in Petroleum Engineering. He was the Chairman of the Board of Directors and Chief Executive Officer of Parker & Parsley, a predecessor of the Company, from January 1989 until the Company was formed in August 1997. Mr. Sheffield joined Parker & Parsley as a petroleum engineer in 1979, was promoted to Vice President - Engineering in September 1981, was elected President and a Director in April 1985, and became Parker & Parsley’s Chairman of the Board and Chief Executive Officer in January 1989. Before joining Parker & Parsley, Mr. Sheffield was employed as a production and reservoir engineer for Amoco Production Company. Mr. Sheffield also serves as a director of Santos Limited, an Australian exploration and production company.

Edison C. Buchanan - 3, 4 »

Former Managing Director, Credit Suisse First Boston

Edison C. Buchanan

Former Managing Director, Credit Suisse First Boston

Edison Buchanan became a Director of the Company in 2002. Mr. Buchanan received a Bachelor of Science degree in Civil Engineering from Tulane University in 1977 and a Master of Business Administration in Finance and International Business from Columbia University Graduate School of Business in 1981. From 1981 to 1997, Mr. Buchanan was a Managing Director of various groups in the Investment Banking Division of Dean Witter Reynolds in their New York and Dallas offices. In 1997, Mr. Buchanan joined Morgan Stanley Dean Witter as a Managing Director in the Real Estate Investment Banking group. During 2000, Mr. Buchanan served as Managing Director and head of the domestic Real Estate Investment Banking Group of Credit Suisse First Boston. Mr. Buchanan also served on the Board of Directors of MFA Financial, Inc. from March 2004 through May 2011.

Andrew F. Cates - 3, 4 »

Managing Member, Value Acquisition Fund

Andrew F. Cates

Managing Member, Value Acquisition Fund

Andrew Cates became a Director of the Company in June 2009. Mr. Cates earned a Bachelor of Business Administration in Finance at the University of Texas at Austin. He is the Managing Member of Value Acquisition Fund and Chief Executive Officer of RVC Outdoor Destinations, a developer and operator of outdoor resorts. Mr. Cates has acquired and asset managed commercial real estate throughout the United States within various entities, including Value Acquisition Fund, an acquisition, development, and asset management company that he founded in 2004. After starting his career in Dallas, Texas with Crow Family Holdings and Viceroy Investments, he became the Project Developer and founding Board Chairman of Soulsville, one of the largest inner city revitalization projects in the United States. In 2000, he began working with a team of civic and business leaders that attracted the Vancouver Grizzlies NBA franchise to Memphis, Tennessee in 2001. Mr. Cates serves on the boards of The Soulsville Foundation and Myelin Repair Foundation.

Timothy L. Dove »

President and Chief Executive Officer

Timothy L. Dove

President and Chief Executive Officer

Tim Dove is president and chief executive officer of Pioneer Natural Resources. He is a member of Pioneer’s management committee and also serves on Pioneer’s board of directors.

Dove joined Parker & Parsley in 1994 as vice president of business development and was promoted to senior vice president in 1996 where he served until the formation of Pioneer in 1997. With Pioneer, Dove held the position of executive vice president - business development until 2000 when he was promoted to executive vice president and chief financial officer. In 2004, Dove was named the Company’s president and chief operating officer. Dove was elected to the board of directors in 2013. In 2017, he was named president and chief executive officer.

Prior to joining Parker & Parsley, Dove worked for Diamond Shamrock Corporation and a successor, Maxus Energy Corporation. Dove holds a Bachelor of Science degree in mechanical engineering from the Massachusetts Institute of Technology and a Master of Business Administration from the University of Chicago.

With Dove’s leadership and guidance, Pioneer has become one of the most efficient operators among the U.S. shale resource companies. While playing an important part in Pioneer’s strategic vision, Dove led the teams who advanced horizontal drilling and completion technology into the Company’s core assets in the Permian Basin and Eagle Ford Shale.

Dove currently serves on the Corporate Development Committee of MIT and is a member of the Board of Trustees of the Jesuit College Preparatory School of Dallas Foundation. He was also a member of the Dream Dallas Advisory Council for Habitat for Humanity. He previously served as a trustee for the KidLinks Foundation, as chairman of the Dallas Wildcat Committee and as president of the Dallas Petroleum Club board of directors.

Phillip A. Gobe - 3, 5 »

Former President and Chief Operating Officer, Energy Partners, Ltd.

Phillip A. Gobe

Former President and Chief Operating Officer, Energy Partners, Ltd.

Phillip Gobe joined Energy Partners, Ltd. as Chief Operating Officer in December 2004 and became President in May 2005, and served in those capacities until his retirement in September 2007. Mr. Gobe also served as a director of Energy Partners, Ltd. from November 2005 until May 2008. Prior to that, Mr. Gobe served as Chief Operating Officer of Nuevo Energy Company from February 2001 until its acquisition by Plains Exploration & Production Company in May 2004. Prior to that time, he held numerous operations and human resources positions with Vastar Resources, Inc. and Atlantic Richfield Company and its subsidiaries. Mr. Gobe served as a director of the general partner of Pioneer Southwest Energy Partners L.P. from April 2008 until its merger with Pioneer Natural Resources Company in December 2013. He is also a director and Chairman of the Compensation Committee of Scientific Drilling International, Inc. Mr. Gobe is a graduate of the University of Texas with a degree in history and earned his MBA at the University of Louisiana in Lafayette.

Larry R. Grillot - 2, 5 »

Retired Dean, Mewbourne College of Earth and Energy, The University of Oklahoma

Larry R. Grillot

Retired Dean, Mewbourne College of Earth and Energy
The University of Oklahoma

Larry Grillot became a Director of the Company in July 2013. Dr. Grillot graduated from Mississippi State University with a Bachelor of Science degree in Physics and then earned master’s and doctoral degrees in geological sciences from Brown University. Dr. Grillot was dean of the Mewbourne College of Earth and Energy at the University of Oklahoma, a position he held since 2006. He also is a member of the American Association of Petroleum Geologists, the Society of Exploration Geophysicists and the Society of Petroleum Engineers. Prior to his role at the University of Oklahoma, from 1973 until his retirement in 2003, Dr. Grillot worked for Phillips Petroleum Company in a variety of technical and managerial positions in exploration and production, including Manager of E&P Technology and Services, Upstream Technology and Project Development, Manager of International Exploration, President and Region Manager for Phillips Petroleum Canada Limited and Manager of E&P Planning.

Stacy P. Methvin - 3, 5 »

Retired Vice President, Shell Oil Company

Stacy P. Methvin

Retired Vice President, Shell Oil Company

Stacy Methvin became a Director of the Company in July 2013. Ms. Methvin graduated from Princeton University with a Bachelor of Arts degree in Geological and Geophysical Sciences. From 2011 until her retirement in 2012, Ms. Methvin was Vice President, Refining Margin Optimization of Shell Oil Company (“Shell”), and from 2009 until 2010, she was Vice President, Global Distribution of Shell. Ms. Methvin also held various other operational and management roles in the upstream, downstream and chemical businesses during her tenure at Shell and its subsidiaries that began in 1979, including President, Shell Louisiana E&P Company, President, Shell Deer Park Refining Company, President Shell Pipeline Company LP, President, Shell Chemical LP, Vice President, Strategy and Portfolio for the downstream business. She also serves on the board of the Houston Zoo and is a member of the finance committee of the Board of Memorial Hermann Hospital System, the Chair of the San Jacinto Girl Scout Council and a trustee for the Springside Chestnut Hill Academy in Philadelphia. She has been an appointee on the Louisiana Governor’s Commission for Coastal Restoration and Protection since 2003.

Royce W. Mitchell - 2, 5 »

Executive Consultant

Royce W. Mitchell

Executive Consultant

Royce Mitchell has been an executive consultant, focusing on advising management and audit committees of exploration and production companies, since January 2005, except for the period from April 2008 through December 2008 when he served as Chief Financial Officer of Frac Tech Services, Ltd. Mr. Mitchell served as Executive Vice President, Chief Financial Officer and Chief Accounting Officer of Key Energy Services, Inc. from January 2002 to January 2005. Before joining Key Energy Services, Inc., he was a partner with KPMG LLP from April 1986 through December 2001 specializing in the oil and gas industry. Mr. Mitchell served as a director and audit committee chairman of the general partner of Pioneer Southwest Energy Partners L.P. from April 2008 until its merger with Pioneer Natural Resources Company in December 2013. He received a BBA from Texas Tech University and is a certified public accountant.

Frank A. Risch - 2, 4 »

Retired Vice President and Treasurer, Exxon Mobil Corporation

Frank A. Risch

Retired Vice President and Treasurer, Exxon Mobil Corporation

Frank Risch became a director of the Company in August 2005. Mr. Risch holds a Bachelor of Science degree in Business Administration from Pennsylvania State University and a Master of Science degree in Industrial Administration from Carnegie Mellon University. Mr. Risch joined Exxon Corporation in 1966 as a financial analyst in New York and subsequently held various positions in finance, planning, marketing and general management with Exxon and its operating affiliates in the U.S. and abroad for nearly 38 years. Mr. Risch retired in July 2004 as Vice President and Treasurer (and principal financial officer) of Exxon Mobil Corporation. Mr. Risch currently serves on the Board of Directors of the general partner of Susser Petroleum Partners LP, a master limited partnership engaged primarily in the wholesale motor fuel distribution business, and is a member of the Business Board of Advisors of the Tepper School of Business at Carnegie Mellon University. He is active in civic and community organizations, serving as Immediate Past Chairman and Life Trustee of the Board of the Dallas Theater Center; Chairman of the Board of Communities Foundation of Texas; and member of the Boards of the ATT Performing Arts Center, Dallas CASA (Court Appointed Special Advocates) and the Dallas Holocaust Museum. He is a member of Financial Executives International.

Mona K. Sutphen - 3, 5 »

Partner, Macro Advisory Partners LLP

Mona K. Sutphen

Partner, Macro Advisory Partners LLP

Mona Sutphen was named a Director of the Company in 2015. Ms. Sutphen is a Partner at Macro Advisory Partners LLP, and previously spent three years at UBS AG as Managing Director, covering geopolitical risk and macro-policy trends. From 2009 through 2011, she served as White House Deputy Chief of Staff for Policy for President Obama, working on a range of domestic and international policy and regulatory matters. Prior to that position, she was Managing Director at Stonebridge International, and from 1991 through 2000 was a career diplomat, serving on the staff of the National Security Council, the U.S. Mission to the UN and postings in Asia and Europe.

Ms. Sutphen is a Member of the President’s Intelligence Advisory Board. She serves on the Boards of Drilling Info Holdings LLC, the International Rescue Committee and Human Rights First. Ms. Sutphen is a member of the Council on Foreign Relations, a Trustee of Mount Holyoke College and is on the Advisory Board of the Center for Global Energy Policy at Columbia University. She is co-author of The Next American Century: How the US Can Thrive As Other Powers Rise, and holds a BA degree from Mount Holyoke College and an MSc degree from the London School of Economics.

J. Kenneth Thompson - 1, 3, 4 »

President and CEO, Pacific Star Energy LLC

J. Kenneth Thompson

President and CEO, Pacific Star Energy LLC

J. Kenneth Thompson became a Director of the Company in August 2011. He received a Bachelor of Science degree in Petroleum Engineering from Missouri University of Science & Technology. He has served as the President and Chief Executive Officer of Pacific Star Energy LLC, a privately held oil and gas investment firm in Alaska, since September 2000, and as Managing Director of Alaska Venture Capital Group LLC, a privately held oil and gas exploration company in which Pacific Star Energy LLC owns an interest, from December 2004 to December 2012. Mr. Thompson’s experience includes serving as Executive Vice President of Atlantic Richfield Company’s (“ARCO”) Asia Pacific oil and gas operating companies in Alaska, California, Indonesia, China and Singapore from 1998 to 2000, and President and Chief Executive Officer of ARCO Alaska, Inc., the parent company’s oil and gas producing division based in Anchorage, from June 1994 to January 1998. He also served as executive head of ARCO’s oil and gas research and technology center from 1993 to 1994. Mr. Thompson also serves as a director of Coeur d'Alene Mines Corporation, a company engaged in the operation, ownership, development and exploration of silver and gold mining property, Alaska Air Group, Inc., a holding company for Alaska Airlines and Horizon Air Industries, and Tetra Tech, Inc., an engineering consulting firm.

Phoebe A. Wood - 2, 4 »

Retired Vice Chairman and Chief Financial Officer, Brown-Forman Corporation

Phoebe A. Wood

Retired Vice Chairman and Chief Financial Officer, Brown-Forman Corporation

Phoebe Wood became a Director of the Company in July 2013. Ms. Wood graduated from Smith College with an A.B. degree in Psychology and then earned a Master of Business Administration from the University of California Los Angeles. Since 2008, Ms. Wood has been a principal at CompaniesWood, a consulting firm specializing in early stage investments. She was Executive Vice President and Chief Financial Officer of Brown-Forman Corporation, a diversified consumer products manufacturer, from 2001 to 2006, and Vice Chairman and Chief Financial Officer from 2006 to 2008. Prior to Brown-Forman Corporation, Ms. Wood was Vice President, Chief Financial Officer and a Director of Propel Corporation (a subsidiary of Motorola) from 2000 to 2001. Previously, Ms. Wood served in various capacities during her tenure at ARCO from 1976 to 2000. Ms. Wood currently serves on the Boards of Directors of Coca-Cola Enterprises Inc., a major bottler and distributor of Coca-Cola products, Invesco Ltd., a global investment management company, and Leggett & Platt, Incorporated, a diversified manufacturer, as well as on the boards of trustees for the University of Louisville, the Gheens Foundation and the American Printing House for the Blind.

Michael D. Wortley - 2, 4 »

Chief Legal Officer, Reata Pharmaceuticals, Inc.

Michael D. Wortley

Chief Legal Officer, Reata Pharmaceuticals, Inc.

Michael Wortley was named a Director of the Company in 2015. Mr. Wortley has practiced corporate law for over 35 years, focusing primarily on corporate governance matters and mergers and acquisitions, including over 25 years in management positions. He has represented public and private entities and private equity funds in connection with mergers, asset sales, issuances of securities and restructurings.

Mr. Wortley was a partner in the Dallas, Texas, office of Vinson & Elkins LLP from 1995 to 2014 and served in various capacities, including Chief Operating Partner of the firm and Managing Partner of the Dallas office. Prior to joining Vinson & Elkins, he was an attorney with Johnson & Wortley, P.C. (which prior to 1993 was known as Johnson & Swanson or Johnson & Gibbs) from 1978 to 1995 and served in various capacities, including President and Chairman of the Board. Mr. Wortley has also served on both for-profit public company boards and non-profit boards of trustees. He holds BA and JD degrees from Southern Methodist University and a Master’s degree in Regional Planning from the University of North Carolina at Chapel Hill. He is currently the Chief Legal Officer for Reata Pharmaceuticals, Inc.

COMMITTEE MEMBERSHIP

1 Lead Director
2 Audit Committee
3 Compensation and Leadership Development
   Committee
4 Nominating and Corporate Governance Committee
5 Health, Safety and Environment Committee