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Diana joined the Hertz Farm Management staff in Sept of 1983.  She has had various job descriptions over the years.  Currently she is coordinator of our farm accounting division, overseeing daily transactions and working closely with program development.  

Diana and her husband, Doug, live north of Nevada, IA where they run a farming operation.  Along with row crops they raise Purebred Maine-Anjou cattle and show pigs.  Their children Todd, Amy, and Cory help with operation and livestock.  

Diana has completed the Leadership Nevada course. She served on the Story County 4-H Foundation Board, was a 4-H Leader, an advisor for the Iowa Jr Maine-Anjou Assoc. and serves on the Iowa Swine Jackpot Series Exe Board.

Carrie Seidel joined Hertz Farm Management in April of 2018 as a farm manager in Mason City, IA.  Prior to joining Hertz, she spent 4 years as a District Sales Manager for Wyffels Hybrids.

She graduated from Iowa State University in May of 2014 with a Bachelor’s Degree in Agricultural Studies and a Minor in Agronomy.  While attending college, she was active in various clubs and studied abroad in both Brazil and Australia.  She held multiple internships ranging from crop scouting to agronomy sales. 

Carrie grew up on a dairy farm in Northeast Iowa.  She is married to her husband, Parker, and lives in Dumont, IA on his family’s land.  Both she and her family enjoy spending time outdoors.

She is a licensed Real Estate Agent in both Iowa and Minnesota.  Carrie is also a member of the American Society of Farm Managers and Rural Appraisers, Mason City Rotary Club, and the Agri-Business Committee with the Mason City Chamber of Commerce.  Her accreditations include being a Certified Crop Advisor and an Accredited Farm Manager.

Spencer has served clients with Hertz Farm Management since the spring of 2016. Beginning his career with Hertz in the Cedar Falls, IA office, he relocated to Monticello, IL in the Spring of 2019. He serves as a farm manager, real estate broker, and auctioneer in Central Illinois. Serving clients in Illinois and Indiana. Spencer graduated from Illinois State University with a B.S in Agriculture Business with an emphasis in Farm Management. Spencer was named the 2023 Land Broker of the Year by the Illinois Chapter of Realtors Land Institute.

Spencer brings a great deal of energy and farm experience to Hertz and his clients rooting from his upbringing. Spencer was given the opportunity to challenge himself with a variety of farm experiences through his family's farming operation. Spencer is involved with many professional organizations serving on various boards and committees.  Spencer grew up in Bloomington, Illinois; the heart of Central Illinois agriculture. He enjoys spending time with family, farming, and working with his two bird dogs Rip and Wren.  

Spencer currently resides near Bloomington, IL with his wife.