Jeffrey Stroburg
Chairman and Chief Executive Officer
Over 25 years in petroleum and agricultural production industries including VP and COO of the Eastern Ag Region of Land O’ Lakes, President and CEO of Countrymark Cooperative (petroleum refiner and distributor), President and CEO of Hamilton Farm Bureau Cooperative. On Board of National Council of Farmer Cooperatives, Associated Benefits Corporation, Biosciences Alliance of Iowa, BIOWA Executive Committee, Cooperative Business International, Iowa State University’s Center for Crops Utilization Research Industry/Stakeholder Advisory Board and National Grain and Feed Association.

Nile Ramsbottom
President
Over 35 years in value added agriculture. EVP of West Central where he established West Central as a leader in the emerging biodiesel industry. EVP and Officer of Ralston Purina and Purina Mills. On Board of Directors of Simmons Foods, Simpson College and Western Iowa Energy.

Daniel Oh
Chief Operating Officer
Over 20 years of experience in management and business. Prior to Renewable Energy Group, Inc., Mr. Oh was a Vice President and member of senior management at ABG, Inc., an agribusiness consulting firm responsible for management consulting and market research practice.

Jeff Pattison
Chief Financial Officer
More than 30 years of experience in accounting, finance, executive management and human resources. He holds a Master of Business Administration degree from St. Ambrose University and Bachelor of Science degree from Iowa State University. Mr. Pattison is a licensed Certified Public Accountant.

Patrick Hammen
Chief Information Officer
Mr. Hammen has experience in evaluating, choosing, implementing and upgrading systems and information technology solutions.  As CIO, Hammen incorporates new technology services, software and programs for Renewable Energy Group’s nationwide network of biodiesel production facilities and growing headquarters.

Myron Danzer
Vice President, Customer and Technical Service
Over 20 years in biodiesel and agricultural process. Managed engineering, construction, startup and operation of several biodiesel plants. Director of Technology and Quality Control within West Central. On National Biodiesel Board as commissioner on Biodiesel Accreditation Committee.

David Elsenbast
Vice President, Procurement
Over 20 years in agricultural business development, supply chain management, operations, and purchasing. VP of Business Development for Milk Specialties Company. Black Belt in Six Sigma.

Gary Haer
Vice President, Sales and Marketing
Over 13 years in the biodiesel industry. National Sales and Marketing Manager for West Central biodiesel efforts. On Governing Board for National Biodiesel Board. Vice-Chairman of Energy Committee for National Council of Farm Cooperatives.

Brad Albin
Vice President, Manufacturing
Over 22 years experience in executive operations positions in multi-feedstock BioDiesel, chemical, food and automotive supplier companies. Former committee member of NBAC and played significant role drafting BQ-9000 Standard. Managed engineering, operations, quality, R & D and ESH for last 15 years as VP or Director for companies such as Monsanto.

Sara Taylor
Executive Director, Corporate Affairs
Taylor brings a wealth of experience in coordinating REG's public policy and public affairs strategies. She is a former top political strategist for President Bush and brings 10 years of experience in message development and issue advocacy to REG.

Bill Neese
Director, Transportation and Logistics
Over 30 years in agricultural and truck transportation. Managed West Central’s transportation of products consumed and produced. Transportation Manager for Ralston Purina and Cargill.

Jon Scharingson

Director, Marketing                            

More than 20 years of experience working in marketing and biotechnology. Mr. Scharingson oversees national market development strategies for Renewable Energy Group, Inc. and the commercial-scale biodiesel production facilities in the REG network nationwide. 

Don Nelson

Director, National Sales                             

Mr. Nelson works with private and public fleets and the petroleum industry to introduce biodiesel into new markets, grow Renewable Energy Group’s current market share and develop national strategies for biodiesel consumption. 

Dave Simon

Controller                             

Mr. Simon oversees the accounting and financial activities and implementation of the Sarbanes-Oxley compliance program for Renewable Energy Group, Inc. and the commercial-scale biodiesel production facilities in the REG network nationwide.