Meet the Team
President & CEO
Mike became the President and CEO of Calcium Products in 2013. Prior to this role, he spent 24 years with John Deere holding positions in engineering, operations, and business. Mike most recently led John Deere’s North American utility tractor business in Augusta, Georgia. He also spent three years in the Netherlands leading John Deere’s European sprayer business and helped secure double-digit growth.
Mike is an Iowa native with experience on his family’s farm. Mike earned an M.B.A. from the University of Chicago in 2002 and a B.S. in Mechanical Engineering from Iowa State University in 1989. Mike and his family live in Ames, Iowa.
Brent Van Ee
Brent brought 19 years of financial experience with him when he joined Calcium Products in 2014. Previously, he worked as a controller for Siegwerk and as a financial consultant at Robert Half Management Resources. He spent six years in financial positions of increasing responsibility at Oldcastle, a manufacturer and distributor of building products, leaving in 2012 as the Midwest Region CFO. Brent’s career started at Koester Construction Company, spending ten years there first as an accountant, then as a systems analyst, and finally as the controller.
He holds a bachelor’s degree in Accounting from Simpson College in Indianola, Iowa. Brent is a native Iowan currently residing in West Des Moines, Iowa.
VP Sales & Marketing
Jeff joined Calcium Products as the Vice President of Sales and Marketing in 2015. Prior to Calcium Products, Jeff developed and grew the Iowa sales territory for Specialty Fertilizer Products (SFP), now Verdesian Life Sciences. He spent ten years at Channel Bio starting first as a district sales manager which led to leadership roles managing all aspects of a sales system including recruitment and coaching of the sales team, marketing, customer service, and distribution. Jeff started his career at FC Coop, now Landus Cooperative in Iowa in 1996 as a feed and livestock marketing specialist.
Jeff has a bachelor’s degree in Agriculture Education from Iowa State University and is an active member of his family farm near Winterset, Iowa.
Andrew Hoiberg, Ph.D.
VP Research & Development
Andrew joined Calcium Products in 2012 after completing his Ph.D. in Horticulture/Soil Science at Iowa State University. Since joining Calcium Products, Andrew has become a recognized expert in the field of soil pH, liming, and sulfur fertility on row crop production in the Midwest. He oversees all aspects of internal and external research, product improvement and development, consultation, technical sales support and training, and variable rate product integration for dealers.
Prior to graduate school, Andrew served as one of the turf managers for the Denver Broncos at Mile High Stadium. He is a native Iowan and currently resides in Ames, Iowa.
Leading our production team is Greg Walstrom, plant manager at Gilmore City. Greg has been with Calcium Products since 2003 and works every day to ensure our operations team works safely, manufactures products to quality specifications, and manufacturers enough product to meet our customers’ growing demand.
Marketing Communications Coordinator
Lacey joined the Calcium Products team as a sales and marketing intern in 2017. Upon graduating from Iowa State University in 2017 with a degree in Agricultural Communications, Lacey was hired on full-time.
She grew up on a farm in central Iowa and now farms with her husband near Gowrie, Iowa.
Customer Service Team
Sales Entry Coordinator
Laurie joined the Calcium Products team in 2022. She graduated from DMACC and Northwest Missouri State and works out of the Ames office on order entry and billing. Laurie currently lives in Story City, Iowa and enjoys spending time with her family and cheering on the Iowa State Cyclones.
Patty has been with Calcium Products since 2022. She graduated from William Penn University and has taken over as our logistics coordinator. Patty can be found sourcing trucks and rail cars out of the office in Ames. In her free Patty enjoys going off-roading with Jeeps, crafting, and visiting wineries. Patty currently resides in Ames, Iowa.
Accounting Clerk – Billing Specialist
Melissa started with Calcium Products in 2022. She graduated from William Penn University and can be found in the Ames office working on billing. In her free time, she enjoys reading, gardening and fishing. Melissa currently resides in Ames, Iowa.
Join the Calcium Products Team
Do you have skills and experience that you think would be a good addition to our team?