Donnell Rehagen serves as the CEO of Clean Fuels Alliance America, biomass-based diesel’s preeminent trade association. With more than 115 member companies, Clean Fuels Alliance America is the leading U.S. organization representing the biodiesel, renewable diesel and sustainable aviation fuel industries. Rehagen works closely with the Clean Fuels board of directors to ensure the industry has a clear, sharp vision of the future. He provides leadership to Clean Fuels Alliance America’s highly competent and passionate staff and team of advocacy, technical, environmental science, and communications professionals in a dedicated drive to see the industry reach its vision of six billion gallons of demand by 2030. Formerly a fleet manager for the Missouri Dept. of Transportation, Rehagen joined the organization in 2004 as its Chief Operating Officer and assumed the role of CEO in 2016. He has a Master’s degree in Public Administration from the University of Missouri – Columbia and a Bachelor’s degree in Computer Information Systems from Missouri State University.

Angela Caddell became BNSF group vice president, Agricultural Products in 2020 to lead a marketing team that specializes in meeting the needs of grain, grain products, fertilizer, renewable fuels and bulk foods customers.

BNSF Railway is one of North America’s leading freight transportation companies operating on 32,500 route miles of track in 28 states, and also operates in three Canadian provinces. BNSF is one of the top transporters of consumer goods, grain and agricultural products, low-sulfur coal, and industrial goods such as petroleum, chemicals, housing materials, food and beverages.

Angela joined BNSF in 1996, holding a variety of roles in Industrial Products before moving to Agricultural Products, Coal Marketing and subsequently to Equipment Utilization. She was later promoted to general director, Agricultural Products, overseeing the fertilizer and oilseeds team. In 2013, Angela was promoted to assistant vice president of sales for Construction Products. Prior to her current position, she most recently served as vice president, Industrial Products. She holds a bachelor’s degree in Business Administration/Marketing and a Master of Business Administration, both from Texas Christian University.

Courtney Lawrenson is Vice President – Oils and Energy for Ag Processing Inc (AGP) based in Omaha, Nebraska.  Lawrenson oversees the commercial & supply chain activities across AGP’s four soybean oil refineries, three biodiesel plants and related co-products.  AGP, a cooperative, is owned by local and regional cooperatives representing approximately 200,000 farmers throughout the United States.  AGP operates ten soybean processing plants in Iowa, Minnesota, Missouri, Nebraska, and South Dakota and is one of the largest integrated biodiesel producers in the U.S. and is the largest soybean oil refiner and soybean processor west of the Mississippi River.

Courtney has worked in the Natural Gas and Renewables Fuels industry for over 20 years handling marketing of feedstock, fuel, co-products and tolling agreements.  An Iowa native, Courtney began her AGP career in 2014 and has a Bachelor of Science degree in Business Administration from the University of Nebraska-Omaha with a focus on Marketing.

Jennifer Ozimkiewicz is Senior Vice President and Head of Global Corn and Soybean Crop Business for the Crop Science division in Bayer. Based in St. Louis, MO, Jennifer develops corn, soybean and biofuels crop strategy and portfolio management across technologies to create long-term value for farmers worldwide, with a strong focus in the Americas. Jennifer also serves Chairman of the Board of CoverCress, Inc, representing Bayer as a Board Member.

Over the last 25 years, Jennifer has served in a variety of commercial roles at Monsanto and Bayer Crop Science. Most recently she was SVP for North America Regional Marketing. Previous experiences include marketing, product management, and commercial leadership, new business development, M&A, and enterprise strategy. She has international commercial leadership experience, having been the Interim Canada Commercial Lead, the Commercial Business Lead for the Mediterranean Region based in Madrid, Spain, and the Seed Licensing Lead for Europe-Africa, located in France.

John Bullock has served as Executive Vice President – Chief Strategy Officer for Darling Ingredients since January 2014. He joined the company in 2012 and served as Executive Vice President for the U.S. Specialty Operations from 2015 to 2021, and Senior Vice President – Business Development from 2012 to 2013.

Bullock began his career at General Mills, Inc. in 1978 in ingredient purchasing and risk management. From 1991 to 2004, Mr. Bullock worked for ConAgra Foods Inc., where he led the mergers and acquisitions group of the ConAgra Trading and Processing Companies, with responsibility for leading the company’s growth initiatives and acquiring numerous businesses throughout the world. From 2004 to 2012, Mr. Bullock operated JBULL INC., a boutique consulting firm he formed specializing in enhancing margin opportunities for agricultural business expansions and developing renewable fuels, during which time he consulted on numerous Darling Ingredients projects, including the development and construction of the Diamond Green Diesel facility.

Bullock will retire on February 15, 2024.

J. Alan Weber is a founding partner of MARC-IV, a consulting company that fosters the development of biobased innovations, and has been involved with biodiesel commercialization activities since 1991. He currently helps lead the annual economic effort to examine the impacts of the Renewable Fuel Standard (RFS) which have helped to quantify the economic benefits associated with increased biodiesel & renewable diesel use and create markets for US farmers.  Weber is a nationally-known economist with extensive experience in the soybean industry.  He also is a producer himself, farming almost 900 acres with his family in Central Missouri.