December 2013

Renewable Energy Group, Inc. Agrees to Acquire Syntroleum Corporation

Acquisition Would Add Renewable Diesel, Other Advanced Technologies to REG’s Product Line

Renewable Energy Group Leaders Testify at EPA Hearing on 2014 RFS Proposal

Jobs, Production, and Environmental Benefits Cited As Reasons to Increase Biodiesel Volumes

(WASHINGTON, DC) December 5, 2013— Leaders from Renewable Energy Group® (NASDAQ: REGI) joined more than two dozen biodiesel advocates in providing testimony at an Environmental Protection Agency hearing on the proposed 2014 Renewable Fuel Standard volumes.