Cynthia J. Warner

Cynthia J. Warner

President & Chief Executive Officer

For more than 35 years, Cynthia (CJ) Warner, has held executive positions in the energy sector in operations, business development, strategy, environment, health and safety. Currently, Ms. Warner serves as President & Chief Executive Officer for Renewable Energy Group, Inc. (REG) and as a member of the Board of Directors.

Prior to REG, Ms. Warner served as Executive Vice President, Operations for Andeavor. She oversaw Andeavor’s Refining; Logistics; and Environment, Health, Safety & Security groups, providing leadership that promoted safe, reliable execution and drove operating efficiency and effectiveness. Prior to that role, Ms. Warner served as Andeavor’s Executive Vice President, Strategy and Business Development, where she led the company’s strategic growth initiatives. She joined the company in 2014, bringing more than 30 years of experience in energy, oil refining and marketing, and related technology development.

Ms. Warner serves as a member of the Board of Directors for IDEX Corporation and a member of the Board of Directors for Sempra Energy. She is also a member of the National Petroleum Council and the Board of Visitors of the Vanderbilt University School of Engineering.

Chad Stone

Chad Stone

Senior Vice President, Commercial Performance

Chad Stone has served as our Chief Financial Officer since August 2009. Prior to joining REG, from October 2007 to May 2009, he was a Director at Protiviti Inc., a global business consulting and internal audit firm. From August 1997 to September 2007, Mr. Stone served as Director with PricewaterhouseCoopers and he worked at Arthur Andersen from July 1992 to August 1997, departing as a manager. Mr. Stone was elected to the governing Board of the National Biodiesel Board in 2015 and has served as secretary since November 2016. Mr. Stone served on the executive Board of the Iowa Biodiesel Board from September 2010 to September 2016, serving as chair from 2014-2015. Since October 2015, Mr. Stone has served on the University of Iowa School of Management's Advisory Committee. Mr. Stone has over 20 years of experience in leading financial reporting, strategy, policy and compliance. Mr. Stone holds an M.B.A. with concentrations in finance, economics and accounting from the University of Chicago, Graduate School of Business and a B.B.A in Accounting from the University of Iowa. He is also a Certified Public Accountant.

Brad Albin

Brad Albin

Senior Vice President, Manufacturing and Engineering

Brad Albin has served as our Vice President, Manufacturing since February 2008. Mr. Albin joined REG in 2006. From 2002 to 2006, Mr. Albin served as Executive Director of Operations for Material Sciences Corporation, where he directed multiplant operations for automotive and global appliance industries. From 1996 to 2002, Mr. Albin was the Vice President of Operations for Griffin Industries. Mr. Albin has over 25 years of experience in executive operations positions in multi-feedstock biomass-based diesel, chemical, food and automotive supplier companies, such as The Monsanto Company, The NutraSweet Company and Griffin Industries. Mr. Albin was a charter member of the National Biodiesel Accreditation Committee. Mr Albin is a current director on two boards where REG has investments and was previously on the Board of Managers for Petrotec GmbH before REG acquired full ownership in 2017. Mr. Albin was previously the President and Vice President of the Iowa Renewable Fuels Association from 2011-2013. In November 2014, Mr. Albin completed the Advanced Management Program from the University of Chicago Booth School of Business and he holds a B.S. in Chemistry from Eastern Illinois University.

Eric Bowen

Eric Bowen

General Counsel and Corporate Secretary

For more than 20 years, Eric M. Bowen has helped build innovative businesses. Mr. Bowen currently serves as General Counsel and Corporate Secretary for Renewable Energy Group, Inc. (REG). Prior to assuming the General Counsel position, Mr. Bowen was REG's Vice President, Corporate Business Development & Legal Affairs. Mr. Bowen joined REG in 2010 as Executive Director, Corporate Business Development & Legal Affairs and led REG's Life Sciences business from its inception in 2014 through its divestiture in 2019.

Prior to joining REG, Mr. Bowen was Founder, President & CEO of Tellurian Biodiesel, Inc. (acquired by REG). Prior to entering the clean fuels industry, Mr. Bowen advised technology start-ups in Silicon Valley at Venture Law Group. Mr. Bowen has been instrumental in crafting landmark clean fuels policies, including California's low carbon fuel standard. Mr. Bowen was a founding member of the California Advanced Biofuels Alliance, serving as chairman from 2007-2012. He also served on the California LCFS Advisory Panel, Mayor Gavin Newsom's Clean Technology Advisory Counsel and as chairman of the San Francisco Biodiesel Taskforce.

Mr. Bowen serves as a member of the Board of Directors of Forge Hydrocarbons, a Canadian renewable diesel technology development company.

Mr. Bowen holds a J.D. from The University of California, Berkeley and a B.A. from the University of Oregon Honors College. Mr. Bowen was the recipient of the Ray Hawk Award - the highest honor given to a University of Oregon graduate for scholastic achievement and leadership.

Trisha Conley

Trisha Conley

Senior Vice President, People Development

Conley has an extensive background working in Human Resources, including serving in a variety of HR leadership roles. Most recently, she held the position of vice president HR, fuels North America and head of country HR, downstream in the U.S. and Mexico at BP. Conley has more than 25 years of experience in human resources, talent management, global integration and business organization.

Trisha holds a bachelor’s degree in public relations and communications from the University of Northern Iowa and an MBA from the University of Missouri-Kansas City. Trisha also serves as a trustee on the board for the Morton Arboretum in Lisle, IL. Trisha was born and raised in Marshalltown, IA. She will be relocating with her husband John and children Nataliya and Ian to the Ames area.

Gary Haer

Gary Haer

Vice President, Special Projects

Gary Haer serves as our Vice President, Special Projects. From October 1998 to August 2006, Mr. Haer served as the National Sales and Marketing Manager for biodiesel for West Central Cooperative, now known as Landus Cooperative, and was responsible for developing the marketing and distribution infrastructure for biomass-based diesel sales in the United States. Mr. Haer has over 20 years of experience in the biomass-based diesel industry. Mr. Haer previously served on the Executive Committee of the National Biodiesel Board's Governing Board and was Past Chairman. He held various officer positions during his tenure from 1998 to 2017. Mr. Haer holds an M.B.A. from Baker University and a B.S. in Accounting from Northwest Missouri State University.

Bob Kenyon

Bob Kenyon

Senior Vice President, Sales & Marketing

Kenyon brings deep knowledge of the oil and gas industry with more than 26 years of experience in fuels operations and downstream marketing. Most recently, Kenyon served as President of Atlas Oil Company in Taylor, MI. Atlas Oil Company is one of the largest fuels distributors in the country, delivering over 1 billion gallons of fuel annually to customers in 49 states.

Bob holds a degree in Business Management from Eastern Michigan University. Bob serves on the board of the American Diabetes Association of Michigan and is a member of the Society of Independent Gasoline Marketers Association. 

Natalie Merrill

Natalie Merrill

Senior Vice President, Business Development

For more than 20 years, Ms. Merrill has held multiple financial and operational positions, including more than 13 years in the biodiesel industry. Currently, she serves as Vice President, Business Development and Optimization for Renewable Energy Group, Inc. (REG). Ms. Merrill is responsible for business development activities including relationship and project development, global mergers, acquisitions, and divestments, including related financial analysis and integration activities. In addition, she oversees the Operations Control Team, which includes risk management, supply chain and transportation.

Prior to her current role, Ms. Merrill served as Treasurer, then Executive Director of Corporate Finance and Investment Banking, and most recently as Vice President and Chief of Staff. Prior to joining REG, Ms. Merrill worked for Deloitte in Kansas City, serving consulting, audit and tax clients during her tenure.

On a community level, Ms. Merrill serves on the Board of Directors for the Central Iowa Chapter for American Red Cross, a member and past Treasurer for Metro Women Connect and is a former board member of the Ames Chamber of Commerce.

Ms. Merrill holds a Master of Business Administration degree from Washington University in St. Louis, a Master of Accountancy from Truman State University and a Bachelor of Science in Accounting from Truman State University. Ms. Merrill is also a non-active licensed Certified Public Accountant.

Doug Lenhart

Doug Lenhart

Vice President, Procurement

For more than three years, Doug Lenhart served as the Executive Director, Procurement & Logistics. His prior jobs working in agriculture livestock and banking provided him with prolific experience in commodity trading and risk management activities. He is currently serving as Vice President, Procurement & Logistics.

Mr. Lenhart serves as a member of REG's senior management team and contributes to strategic business decisions for the North America and European markets. He oversees purchasing of feedstocks and chemicals, sales of co-products. Mr. Lenhart provides oversight and metrics to ensure the performance of all the activities, as well as looking for continuous improvement.

He currently serves as Secretary for the Iowa Biodiesel Board and on the board of directors for the Executive Advisory Board of the Iowa State University MBA Program. He also helps with numerous youth sports organizations and with Hope Lutheran Church in his community.

Mr. Lenhart received his Bachelor of Science in Agriculture Business from Illinois State University and his MBA from Iowa State University.

Raymond Richie

Raymond Richie

Vice President and Managing Director, International Business

Raymond Richie serves as Vice President and Managing Director, International Business. He focuses on leading our existing international operations as well as international business development and international integration for future projects as needed.

Prior to his current role, he served as Vice President, Strategic Planning and Analysis and Managing Director, European Operations. Mr. Richie has a broad business background gained through leading companies and consulting to executives of large multinational companies. Mr. Richie has expertise in several industries including fuels and chemicals, agribusiness, transportation and logistics, and healthcare.

Prior to REG, Mr. Richie spent a number of years as a management consultant with Ernst & Young, LLP and a boutique agribusiness firm. Mr. Richie has experience in industry working for companies ranging in size from startup, including private equity owned, to large and publicly traded. At these companies, Mr. Richie has served in a variety of executive positions, including President and CFO, where he has overseen functions including: manufacturing, sales and marketing, procurement, and finance and accounting.

Mr. Richie holds both a B.S. and an MBA from Indiana University's Kelley School of Business where he majored in Finance, Marketing, and Strategy.