John Lagemann retired as Senior Vice President, Sales & Marketing for the Agriculture and Turf Division for Regions 3 and 4, a position he held since September 2012. In this position, John was responsible for sales and go-to-market activities in the Americas and Australia. In June 2019 additional responsibilities were added for Region 2 (Europe) to establish and prioritize requirements for key tactical marketing, sales and channel development processes, tools and systems.

Lagemann joined John Deere as a marketing representative at the Kansas City Sales Branch in 1982. He worked with dealers and customers in various field assignments at the Kansas City Sales Branch until 1994. He was named Manager, Factory Marketing at John Deere Harvester Works in 1994 and became manager of John Deere operations in Australia, New Zealand and East Asia in 1999.

Lagemann was named Vice President of Sales for the United States and Canada in 2002. In 2009, he was appointed Vice President, Ag & Turf Sales and Marketing for the United States, Canada, Australia and New Zealand (Region 4).

Lagemann earned his bachelor's degree in feed science and management and his MBA from Kansas State University. He is a board member of the Association of Equipment Manufacturers (AEM) and Chair of the AEM Ag Sector Board and 2018 Vice Chair, a member of the Kansas State Dean's Business Advisory Council, an Advisory Board member of Kansas State Olathe, and a board member of the American Royal Association.