Green Plains Inc - Company Profile
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The following section provides information on Green Plains Inc’s senior management, executives, CEO and key decision makers and their roles in the organization. For more insight into Green Plains Inc's management and employees, unlock the full data with our company analytics monitoring tool.
Executives
Chris G Osowski
Chief Executive Officer; Director Executive BoardMr. Chris Osowski has been the Director and Chief Executive Officer of the company since August 2025. Previously, he was the Executive Vice President of Operations and Technology of the Company. Prior to this, he served as Vice President, Global Technology for ADM. Prior to that, he worked at Tate & Lyle, Renewable Energy Group, and POET.
Ann Reis
Chief Financial Officer Senior ManagementMs. Ann Reis has been the Chief Financial Officer of the company since 2026. She served as the Chief Financial Officer, Chief Accounting Officer, and Assistant Secretary of the board of directors at Southwest Iowa Renewable Energy. She has 20 years of experience across agribusiness, energy, and financial services. She also worked at Lincoln Financial Group and ConAgra Foods.
G. Patrich Simpkins
Chief Executive Officer - Fluid Quip Technologies Senior ManagementMr. G. Patrich Simpkins has been the Chief Executive Officer of Fluid Quip Technologies in February of 2025. He served as the Chief Transformation Officer of the company. Prior to this, Mr. Simpkins served as a Chief Financial Officer at Green Plains from May 2019 to 2022; as the Chief Development Officer from October 2014 to May 2019; Chief Risk Officer from October 2014 to August 2016; and the Executive Vice President of Finance and Treasurer of the company from May 2012 to October 2014. Mr. Simpkins served as Managing Partner of GPS Capital Partners LLC; as the Chief Operating Officer and Chief Financial Officer of SensorLogic Inc from February 2005 to June 2008 and as Executive Vice President and Global Chief Risk Officer of TXU Corporation from November 2001 to June 2004.
James F Herbert II
Chief Human Resources Officer Senior ManagementMr. James F Herbert II has been the Chief Human Resources Officer of the company since October 2022. Prior to this, he served as the Vice President of Finance and Operations at Capstone IT from 2018 to 2022. Mr. Herbert also served as Assistant Vice President – HR Training and Development, Assistant Vice President - Human Resources at Union Pacific Railroad.
Imre Havasi
Senior Vice President; Head - Trading and Commercial Operations Senior ManagementMr. Imre Havasi served as the Senior Vice President and Head of Trading and Commercial Operations at the company since February 2025. He served as Senior Vice President of Commercial Operations since May 2023. Mr. Havasi worked for 30 years at Cargill Incorporated, holding various leadership positions in Cargill’s Food and Feed businesses.
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