Corporate Governance

Executive Leadership Team

Portrait

Mark Lashier, President and CEO

Mark Lashier is president and CEO of Phillips 66, a diversified energy company. A chemical engineer, he has over 30 years of experience in various executive leadership roles within the energy and petrochemical industries.

Lashier served as chief operating officer of Phillips 66 from April 2021 through June 2022. Before that, he was president and CEO of Chevron Phillips Chemical Company LLC (CPChem), a joint venture between Phillips 66 and Chevron, from 2017 to 2021. He previously held several leadership positions at CPChem, including executive vice president of Olefins and Polyolefins; senior vice president of Specialties, Aromatics and Styrenics; vice president of Corporate Planning and Development; project director for Saudi Arabia; and regional manager in Asia.

Lashier began his career at Phillips Petroleum in 1989 as an associate research engineer.

He serves on the boards of several industry groups and nonprofits, including American Fuel and Petrochemical Manufacturers, the Greater Houston Partnership, Iowa State University’s College of Engineering Industrial Advisory Council, Junior Achievement of Southeast Texas and the American Cancer Society’s CEOs Against Cancer. He is a member of the Business Roundtable and serves on the board of directors of DCP Midstream, LLC.

Lashier received a Bachelor of Science and a doctorate in chemical engineering from Iowa State University. He holds 13 U.S. patents.

Portrait

Todd Denton, Senior Vice President, Health, Safety and Environment (HSE), and Projects

Todd Denton is senior vice president of Health, Safety and Environment (HSE), and Projects for Phillips 66. Denton has more than 30 years of experience in the oil and gas industry, with an extensive background in pipeline and terminal projects and operations.

Before his current role, Denton held a series of leadership positions in Midstream for Phillips 66, most recently as vice president of Midstream Operations, and served as president of Phillips 66 Pipeline LLC from 2012 to 2022. Before that, he worked for NuStar Energy as vice president, Pipeline & Terminal Operations.

Denton spent the majority of his early career with Diamond Shamrock and Valero in various engineering positions related to pipeline and terminal projects.

He is currently a board member of the Association of Oil Pipe Lines (AOPL). He is one of five industry executives on the U.S. Department of Transportation Technical Advisory Committee, appointed by Secretary of Transportation Elaine Chao in 2017.

Denton earned a Bachelor of Science degree in Electrical Engineering from Texas Tech University in 1986. He later earned a Master of Science degree in Finance and Economics in 1996 from West Texas A&M University.

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Jeff Dietert, Vice President, Investor Relations

Jeff Dietert is vice president, Investor Relations, for Phillips 66. Dietert brings over 30 years of experience in the oil and gas industry.

Before joining Phillips 66 in April 2017, Dietert served as managing director, Research, at Simmons & Company International, a firm that provides investment banking services for the energy industry. Prior to that, he also provided research coverage of companies in the integrated oil, natural gas gathering, processing and pipeline, and independent power sectors. He also previously served in business development, finance and marketing roles at Texaco, Aquila Energy and Oryx Energy, as well as a drilling engineer at Viersen & Cochran.

Dietert holds a bachelor’s degree in petroleum engineering from the University of Oklahoma and an MBA from The University of Texas at Austin.

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David Erfert, Senior Vice President, Chief Transformation Officer

David Erfert is senior vice president and Chief Transformation Officer for Phillips 66, a diversified energy manufacturing and logistics company. A chemical engineer, Erfert has 32 years of experience in various refining and leadership roles within the oil and gas industry.

Previously, Erfert served as senior vice president of Health, Safety and Environment (HSE) and Projects for Phillips 66. He held a number of roles in the company prior to that, including vice president, Strategy and Planning; general manager, Sweeny Refinery; manager, Refining Business Improvement; and manager, Bayway Refinery. Before moving to Phillips 66 in 2012, his roles at ConocoPhillips included manager, Trainer Refinery; operations manager, Bayway Refinery; and production manager, Ponca City Refinery. During the merger of Conoco and Phillips in 2002, he was transferred to the San Francisco Refinery as the technical manager.

Beginning his career with Shell Oil in 1990, Erfert held various roles in engineering as well as planning and economics. He later worked in the Netherlands for Shell International in a long-range planning and commercial role. He also served as business manager at Wood River Refinery and joined Tosco to serve as the operations manager for offsites.

Erfert is on the Management Committee for WRB Refining LP. He previously served as chairman of the API Refining Subcommittee, chairman of the AFPM Process Safety Advisory Group and on the board of the Western States Petroleum Association.

Erfert received a Bachelor of Science degree in chemical engineering from the University of Michigan in 1990. He earned his MBA in finance from the University of Houston in 1997.

Portrait

Zhanna Golodryga, Senior Vice President, Chief Digital and Administrative Officer

Zhanna Golodryga is senior vice president, chief digital and administrative officer for Phillips 66. Golodryga has more than 30 years of experience within the oil and gas industry.

Before joining Phillips 66 in April 2017, she served as chief information officer and senior vice president, Services, with responsibilities for Global Supply Chain, Facilities and Office Services for Hess Corporation, a role she held since 2012. Prior to that, she was vice president and CIO at BHP Billiton, vice president of Information Technology at TeleCheck International, manager of Information Systems at Baker Hughes, and IT Services manager at Marathon Oil.

Golodryga graduated with a master’s degree in mechanical engineering from Kiev Engineering and Construction Institute in the Ukraine.

Portrait

Richard G. Harbison, Senior Vice President, Refining

Richard G. (Rich) Harbison is senior vice president of Refining for Phillips 66. Harbison has over 30 years of experience in a variety of leadership roles across the refining, pipeline and terminal organizations.

From 2020 to 2022, Harbison was vice president of the San Francisco Refinery, where he oversaw Rodeo Renewed. He previously served as manager of the Lake Charles Manufacturing Complex from 2016 to 2020 and manager of the Ferndale Refinery from 2014 to 2016. Prior to that, he worked at both the Los Angeles Refinery and Ferndale Refinery as operations manager.

Harbison began his career as an operator with Unocal Corporation at the Richmond Terminal. In 1992, he was promoted to his first supervisory role and worked in roles of increasing responsibility for the pipeline and terminal organizations.

In 1999, Harbison transferred to Tosco’s San Francisco Area Refinery as a project engineer. He worked on several assignments at the Rodeo Refinery, including routine maintenance, turnaround and operations superintendent.

Portrait

Brian Mandell, Executive Vice President, Marketing and Commercial

Brian Mandell is executive vice president, Marketing and Commercial for Phillips 66, a diversified energy manufacturing and logistics company. Mandell has more than 29 years of experience in various Marketing, Commercial and Midstream roles.

Previously, Mandell served as senior vice president, Commercial; president, Global Marketing; and global trading lead, Clean Products, Commercial. Prior to joining Phillips 66 in May 2012, he worked for ConocoPhillips as manager, U.S. Gasoline Trading. There, Mandell served in the Commercial NGL group and was named manager of NGL Trading after working as manager of Processing Assets and Business Development.

Mandell began his career with Conoco in 1991 working in various Marketing roles across the U.S. In 1998, he transferred to the Commercial organization as a market analyst and subsequently worked in a variety of trading roles including derivatives and clean products trading.

He serves on the board of directors for DCP Partners Midstream, Big Brothers Big Sisters of Greater Houston and Child Advocates. He previously served on the boards of the Fuels Institute and The Petrochemical Feedstock Association of the Americas.

Mandell attended the University of Texas at Austin and graduated with a Bachelor of Arts in 1986 and an MBA in 1990.

Portrait

Kevin J. Mitchell, Executive Vice President, Finance and Chief Financial Officer

Kevin J. Mitchell is executive vice president, Finance, and chief financial officer for Phillips 66, a diversified energy manufacturing and logistics company. Mitchell leads the company’s treasury, accounting, auditing, tax, corporate strategy and business development functions. He has more than 30 years of experience in finance roles within the oil and gas industry.

Mitchell previously served as vice president, Investor Relations. Prior to joining Phillips 66, Mitchell served as the general auditor of ConocoPhillips and vice president, Exploration and Production — Strategy, Administration and Technical Services.

He joined Conoco in 1991 and held positions in finance and accounting, including general manager of Upstream Finance, Strategy and Planning; vice president of Finance and Administration for ConocoPhillips Alaska; and manager of Treasury Services.

Mitchell serves on the board of directors for Chevron Phillips Chemical Company and DCP Midstream, LLC.

He is a certified internal auditor and a fellow with the Chartered Institute of Management Accountants.

Portrait

Sonya Reed, Senior Vice President, Human Resources and Corporate Communications

Sonya Reed is senior vice president, Human Resources and Corporate Communications for Phillips 66. Reed is responsible for talent acquisition, total rewards, employee development, succession management, inclusion and diversity, and all other aspects of the human resources agenda for the company. She is also responsible for overseeing internal and external communications, corporate brand, media and philanthropy. Reed is a member of the company’s Executive Leadership Team and reports directly to Greg Garland, chairman and CEO.

Before joining Phillips 66 in May 2015, Reed served as executive vice president and chief human resources officer for General Cable, an industrial manufacturing company, where she led the globalization of all human resources practices.

Reed has more than 20 years of global experience in human resources management, spanning across multiple industries. She began her career at Zurich Financial Services as a commercial underwriter and found her passion early on when she moved to human resources. She ascended through the function, specializing in business partnerships. After a multiyear assignment at Zurich’s global headquarters in Switzerland, she returned to the United States as the vice president of Human Resources for Latin America, after which she moved to General Cable.

She is a board member of Boys & Girls Clubs of Greater Houston and The Awty International School. She previously served on the board of Girls Inc. of Greater Houston.

Reed holds a Bachelor of Arts degree in economics from Arizona State University and completed advanced studies at Cambridge University in England and the Complutense University of Madrid. She is fluent in Spanish.

Portrait

Timothy D. Roberts, Executive Vice President, Midstream

Timothy (Tim) Roberts is executive vice president, Midstream for Phillips 66, a diversified energy manufacturing and logistics company. Roberts has more than 30 years of experience in strategy, operations, commercial, and joint ventures in the oil and gas and chemicals industries.

Roberts previously served as executive vice president, Marketing and Commercial, as well as executive vice president, Strategy and Business Development. Prior to Phillips 66, Roberts was executive vice president, Global Olefins and Polyolefins for LyondellBasell.

He began his career in sales and in 1987 joined Phillips Petroleum, where he held positions in sales, marketing and corporate planning. Roberts subsequently moved to Qatar Chemical Company, a CPChem and Qatar Petroleum joint venture, as the country manager based out of Qatar.

After several leadership roles with CPChem, he was appointed president and CEO of Americas Styrenics, a Dow Chemical and CPChem joint venture. After serving as the vice president of Corporate Planning and Strategic Transactions for CPChem, Roberts transitioned to LyondellBasell where he held various leadership positions.

Roberts serves on the board of directors for the Houston Zoo. He has a Bachelor of Science in marketing from Ball State University.

Portrait

Vanessa Sutherland, Executive Vice President, Legal and Government Affairs, General Counsel, Corporate Secretary

Vanessa Allen Sutherland is executive vice president, Legal and Government Affairs, general counsel, and corporate secretary for Phillips 66, a diversified energy company. She has over 25 years of legal experience.

Before assuming her current role in January 2022, Sutherland was executive vice president and chief legal officer for Norfolk Southern Corporation , where she held a series of positions.

Sutherland brings considerable knowledge of the public sector, having served as chairperson and CEO of the U.S. Chemical Safety and Hazard Investigation Board from 2015-2018 and as chief counsel at the U.S. Department of Transportation’s Pipeline and Hazardous Materials Safety Administration from 2011-2015. She also served in senior legal counsel roles for Altria Group and Philip Morris USA.

Sutherland earned a bachelor’s degree from Drew University, as well as a law degree and MBA from American University.

Board of Directors

Portrait

Greg C. Garland, Executive Chairman

Greg Garland is executive chairman of the board of directors for Phillips 66, a diversified energy company. A chemical engineer, Garland has 40 years of experience in technical and executive leadership positions within the oil, natural gas and chemical industries.

Garland was CEO of Phillips 66 from 2012 through June 2022. He previously was senior vice president, Exploration and Production, Americas, for ConocoPhillips. Prior to joining ConocoPhillips, he was president and CEO of Chevron Phillips Chemical Company, which is now a joint venture between Phillips 66 and Chevron. Garland previously served as senior vice president, Planning & Specialty Chemicals at Chevron Phillips.

Garland began his career with Phillips Petroleum Company in 1980 as a project engineer. He later worked as a sales engineer, business service manager, business development director and olefins manager. He held various leadership positions at Phillips, including general manager and manager roles.

He serves on the board of directors for Amgen, the Barbara Bush Houston Literacy Foundation, the Greater Houston Partnership, Junior Achievement of Southeast Texas and the National Petroleum Council. He is a member of the executive committee of American Petroleum Institute and serves on the engineering advisory board for Texas A&M University. He is also one of the founding CEOs of the American Cancer Society’s CEOs Against Cancer initiative in the U.S. Gulf Coast region and a member of the Board of Visitors for MD Anderson.

Garland received a Bachelor of Science degree in chemical engineering from Texas A&M University in 1980.

Portrait

Gary K. Adams, Board of Directors Member

Gary K. Adams is a member of the board of directors for Phillips 66. He serves on the human resources and compensation, and public policy and sustainability committees.

Adams was the chief advisor of chemicals for IHS Inc. He started his chemical industry career with Union Carbide. After 15 years serving in a number of positions at Union Carbide, Adams joined Chemical Market Associates Inc. (CMAI). He served as president, CEO and chairman of the board of CMAI from 1997 until its acquisition by IHS in 2011.

Adams is a director of Trecora Resources and previously served on the boards of Westlake Chemical Partners LP from July 2014 to October 2016, and Phillips 66 Partners LP from September 2013 to August 2016.

Portrait

Julie L. Bushman, Board of Directors Member

Julie L. Bushman is a member of the board of directors for Phillips 66. She serves on the audit and finance and public policy and sustainability committees.

Bushman is the former executive vice president of International Operations at 3M. She previously served in various executive positions at 3M, including as senior vice president of Business Transformation and Information Technology; executive vice president of Safety, Security and Protection Services; executive vice president of Safety and Graphics; division vice president of the Occupational Health and Environmental Safety Division; and chief information officer. Bushman joined 3M in 1983. She also has served on the 3M Foundation Board and has led the 3M United Way Giving Campaign.

Bushman also serves on the boards of directors of Adient plc and Bio-Techne Corporation. She previously served on the board of Johnson Controls from 2012 through 2016.

Portrait

Lisa A. Davis, Board of Directors Member

Lisa A. Davis is a member of the board of directors for Phillips 66. She serves on the human resources and compensation and public policy and sustainability committees.

Davis previously served as a member of the managing board for Siemens AG with responsibility as CEO for Siemens Gas and Power, which operates in more than 80 countries and includes power generation, power services, oil and gas, transmission and new fuels. During her tenure at Siemens, Davis also served as chair and CEO of Siemens Corporation USA and as a member of the board of directors of Siemens Gamesa Renewable Energy SA.

Prior to joining Siemens, Davis served in various capacities and leadership positions with Royal Dutch Shell, Texaco and Exxon Corporation in upstream and downstream operations and project development.

Davis also serves on the boards of directors of Air Products and Chemicals, Inc., Penske Automotive Group and Kosmos Energy Ltd.

Portrait

Gregory J. Hayes, Board of Directors Member

Gregory J. Hayes is a member of the board of directors for Phillips 66. He serves on the human resources and compensation and public policy and sustainability committees.

Hayes is the Chairman and Chief Executive Officer of Raytheon Technologies Corporation (“Raytheon”), a position he has held since June 2021. Hayes previously served as President, Chief Executive Officer and Director of Raytheon from April 2020 to June 2021; Chairman and Chief Executive Officer of United Technologies Corporation (“UTC”) from 2016 to April 2020; President, Chief Executive Officer and Director of UTC from 2014 to 2016; Senior Vice President and Chief Financial Officer of UTC from 2008 to 2014; and in various senior positions since joining UTC in 1999 through the acquisition of Sundstrand Corporation, including Vice President, Accounting and Finance, and responsibility for UTC’s Corporate Strategy function. Hayes previously served on the board of Nucor Corporation from 2014 to 2018.

Hayes holds a bachelor’s degree in economics from Purdue University and is a Certified Public Accountant.

Portrait

Charles M. Holley, Board of Directors Member

Charles M. Holley is a member of the board of directors for Phillips 66. He serves on the audit and finance and public policy committees.

Holley is the former executive vice president and chief financial officer for Wal-Mart Stores, Inc. (“Walmart”) where he served from 2010 to 2015. Prior to this, Holley served as executive vice president, Finance, and treasurer of Walmart from 2007 to 2010. Holley previously served as senior vice president and controller from 2003 to 2005.

Holley previously served as an independent senior advisor, U.S. CFO Program, Deloitte LLP, from 2016 to 2019. He currently serves on the Advisory Council for the McCombs School of Business at the University of Texas at Austin and the University of Texas Presidents’ Development Board. Holley also serves on the boards of directors of Amgen, Inc. and Carrier Global Corporation.

Portrait

Mark Lashier, Board of Directors Member

Mark Lashier is president and CEO of Phillips 66, a diversified energy company. A chemical engineer, he has over 30 years of experience in various executive leadership roles within the energy and petrochemical industries.

Lashier served as chief operating officer of Phillips 66 from April 2021 through June 2022. Before that, he was president and CEO of Chevron Phillips Chemical Company LLC (CPChem), a joint venture between Phillips 66 and Chevron, from 2017 to 2021. He previously held several leadership positions at CPChem, including executive vice president of Olefins and Polyolefins; senior vice president of Specialties, Aromatics and Styrenics; vice president of Corporate Planning and Development; project director for Saudi Arabia; and regional manager in Asia.

Lashier began his career at Phillips Petroleum in 1989 as an associate research engineer.

He serves on the boards of several industry groups and nonprofits, including American Fuel and Petrochemical Manufacturers, the Greater Houston Partnership, Iowa State University’s College of Engineering Industrial Advisory Council, Junior Achievement of Southeast Texas and the American Cancer Society’s CEOs Against Cancer. He is a member of the Business Roundtable and serves on the board of directors of DCP Midstream, LLC.

Lashier received a Bachelor of Science and a doctorate in chemical engineering from Iowa State University. He holds 13 U.S. patents.

Portrait

John E. Lowe, Board of Directors Member

John Lowe is a member of the board of directors for Phillips 66. He is chair of the audit and finance committee and serves on the nominating and governance, public policy and sustainability and executive committees.

Lowe held a series of executive positions with ConocoPhillips, including executive vice president, Exploration & Production, executive vice president, Commercial, and executive vice president, Strategy, Planning and Corporate Affairs.

He currently serves on the board of TransCanada Corporation and as the non-executive Chairman of Apache Corporation. He is a former Board member of Chevron Phillips Chemical Co. LLC, DCP Midstream, LLC and DCP Midstream GP, LLC, the general partner of DCP Midstream Partners, LP.

Lowe earned a Bachelor of Science degree in finance and accounting from Pittsburg State University in Pittsburg, Kan., in 1981. He is an inactive Certified Public Accountant.

Portrait

Denise L. Ramos, Board of Directors Member

Denise Ramos is a member of the board of directors for Phillips 66. She is the chair of the public policy and sustainability committee and serves on the audit and finance, nominating and governance, and executive committees.

Ramos retired as chief executive officer, president and a director of ITT Inc. (formerly ITT Corporation) in 2019. She also previously served as senior vice president and chief financial officer of ITT. Prior to joining ITT, Ramos served as chief financial officer for Furniture Brands International from 2005 to 2007. From 2000 to 2005, Ramos served as senior vice president and corporate treasurer at Yum! Brands, Inc. and chief financial officer for the U.S. division of KFC Corporation. Ramos began her career in 1979 at Atlantic Richfield Company (ARCO), where she spent more than 20 years serving in a number of finance positions including corporate general auditor and assistant treasurer.

Ramos also serves on the boards of directors of Bank of America Corporation and Raytheon Technologies

Portrait

Denise R. Singleton, Board of Directors Member

Denise R. Singleton (f/k/a Denise R. Cade) is a member of the board of directors for Phillips 66. She serves on the audit and finance committee and the public policy and sustainability committee of the board.

Singleton is the Executive Vice President, General Counsel and Secretary of WestRock Company. She previously served as Senior Vice President, General Counsel and Corporate Secretary of IDEX Corporation from 2015 to 2022. Prior to joining IDEX, she served as Senior Vice President, General Counsel, Corporate Secretary and Chief Compliance Officer at SunCoke Energy, Inc. and its controlled company SunCoke Energy Partners, L.P., where she was on the board of directors, from 2011 to 2015. Prior to joining SunCoke Energy, Singleton held several positions at PPG Industries, Inc., including Assistant General Counsel and Corporate Secretary, Chief Securities and Finance Counsel, Chief M&A Counsel, and General Counsel of the Glass and Fiberglass Division. Prior to joining PPG, Singleton was a partner at Shaw Pittman LLP, a law firm.

Singleton currently serves on the board of directors of Teledyne Technologies Incorporated.

Portrait

Douglas T. Terreson, Board of Directors Member

Doug T. Terreson is a member of the board of directors for Phillips 66. He serves on the human resources and compensation committee and the public policy and sustainability committee of the board.

Terreson is a former Senior Advisor at Evercore, a position he held since 2021. Terreson previously served as the Head of Global Energy at Evercore ISI, from 2016 until 2021. Terreson joined International Strategy & Investment Group (ISI), which was acquired by Evercore in 2014, in 2009, after 15 years at Morgan Stanley, where he managed the Global Energy Group. Prior to that, he managed Putnam Investments’ energy mutual fund. Terreson began his career as an engineer with Schlumberger Limited.

Terreson is the chair of the investment committee of the Mississippi State University Foundation Board.

Portrait

Glenn F. Tilton, Board of Directors Member

Glenn Tilton is a member of the board of directors for Phillips 66. He is chair of the nominating and governance committee and serves on the human resources and compensation, public policy and sustainability, and executive committees.

Tilton retired from his position as Chairman of the Midwest for JPMorgan Chase in 2014. Until December 2012, Tilton served as non-executive chairman of the board of directors of United Continental Holdings, Inc., following the merger between United and Continental Airlines. Prior to the merger, Tilton was chairman and CEO of United Airlines Inc. from 2002 to 2010. Previously, he spent more than 30 years in increasingly senior roles with Texaco Inc., including chairman and CEO in 2001. He currently serves on the boards of Abbott Laboratories and AbbVie.

Tilton attended the University of South Carolina, receiving his BA in international studies in 1970 and an honorary doctorate in 2012.

Portrait

Marna C. Whittington, Board of Directors Member

Dr. Marna C. Whittington is a member of the board of directors for Phillips 66. She is chair of the human resources and compensation committee and serves on the nominating and governance, public policy and sustainability, and executive committees.

Whittington was chief executive officer of Allianz Global Investors Capital, a diversified global investment firm, from 2002 until her retirement in January 2012. She was chief operating officer of Allianz Global Investors, the parent company of Allianz Global Investors Capital, from 2001 to 2011. Prior to that, she was managing director and chief operating officer of Morgan Stanley Asset Management. Whittington started in the investment management industry in 1992, joining Philadelphia-based Miller Anderson & Sherrerd.

She also serves on the board of directors of Macy’s, Inc. Whittington earned a Ph.D. and masters in Quantitative Methods from the University of Pittsburgh, and received her bachelors in Mathematics from the University of Delaware.

Committee Composition

Documents and Charters

Phillips 66 has a long-standing commitment to comply with the law wherever we operate and to conduct all business activities with the highest ethical standards. In today's business environment, upholding this commitment is critical for our continued success in the global marketplace. The Phillips 66 governance body ensures the company serves the interests of shareowners and other key stakeholders with the highest standards of responsibility, integrity and compliance with all laws. This section introduces corporate board members and the committees on which they serve, and provides documents that summarize the standards that guide our actions and oversight of the company.