In February 2017, Ms. Duren retired from Union Pacific Corporation, the operator of one of North American’s premier railroad franchises, having served as Executive Vice President, Chief Administrative Officer and Corporate Secretary for four years, after serving as Vice President and General Manager–Chemicals in Marketing & Sales. Since joining Union Pacific in 1985, she held a variety of positions in the Finance and Marketing & Sales departments, including Vice President and General Manager–Agricultural Products. In 2012, Ms. Duren was one of the honorees of the Women’s Center for Advancement Tribute to Women and in 2011 she was awarded the Creighton University College of Business Alumni Merit Award. Prior to her employment at Union Pacific, she was a certified public accountant with Deloitte, Haskins & Sells in Omaha.

Ms. Duren has served as a director of Werner Enterprises, a transportation and logistics company, since May 2017, U.S. Silica Holdings, an industrial minerals company, since November of 2017 and Savage Companies, a privately held transportation, logistics, materials handling, and industrial services company, since September 2021.

Ms. Duren has been active on multiple community boards including the American Red Cross, of which she served as Chair of the Heartland Chapter in 2010 and 2011. In 2014, Ms. Duren was appointed by Omaha Mayor Jean Stothert, reappointed for a second five -year term beginning May 2019 by the Omaha City Council and reappointed for a third five-year term beginning May 2024 to the Metropolitan Entertainment & Convention Authority Board of Directors and is the current Chair of the Board. She also served on the Board of Children’s Hospital and Medical Center where she was Chair from 2019 through 2021. Ms. Duren joined the Peter Kiewit Foundation as a community advisor in December 2018 and became a trustee of the foundation in September 2019.

Ms. Duren holds a bachelor’s degree in Business Administration from Creighton University, and she was appointed to the Board of Trustees of that university in May of 2019.

Ms. Duren and her husband, Drew Collier, reside in Omaha, Nebraska.