Staff Directory

Management
Jim Koerselman

Jim Koerselman

Chairman of the Board

800-543-3626

Joined Demco in1964.
I am the second generation in our family owned business. In the course of 50 years, it's been exciting to see Demco grow from just 10 employees to over 300 employees. I'm enjoying my current role of consulting the 3rd generation.

Robert Koerselman

Robert Koerselman

President

800-543-3626

Joined Demco in 1988.
I started working at Demco in 1988. However, being 3rd generation, Demco has always been a part of my life. I feel very blessed to have worked side by side with my father in our family business. I'm very passionate about innovation in all the industries we serve. By surrounding myself with great people I will continue the strong tradition set before me.

Kevin Ten Haken

Kevin Ten Haken

Executive Vice President & Cost Accounting / Purchasing

800-543-3626

Joined Demco in 1986.
I graduated from Minnesota State University (formerly Mankato State University), BS in Finance/Mgmt.  I initially worked at Citibank NA in Sioux Falls prior to coming  to Demco.  I have been at Demco since 1986 and have been involved in a number of roles prior to being in my current position of Executive VP.  I am actively involved in a number of non-profit organizations in addition to my church.  I enjoy time spent with family and when time permits, golf, motorcycling and gardening, etc

Ken Streff

Ken Streff

Vice President Sales & Marketing

800-543-3626

Joined Demco in 1998
AG Territory manager for Southwest Minnesota, South Dakota, and Northern Nebraska. After four years on the territory he came into the office on a fulltime basis as the VP of sales / marketing.

Benji Vande Griend

Benji Vande Griend

Ag Products Sales Manager

800-543-3626

Joined Demco/Maurer in 2010
Born and raised in Northwest Iowa on a farm. Then into various professional positions in his early career has prepared Benji as the perfect fit for our AG products sales manager. From the very first day Benji has fit into the Demco team always working with each and every team member for the greater good of all. Benji can be found at many industry events across North America working with our dealers, distributors, sales representatives, and co-workers.

Matthew Branum

Matthew Branum

Chief Financial Officer

Joined Demco in 2014.
As Chief Financial Officer, Matthew joined the Demco/Maurer team in May 2014.  He has over 25 years of experience in both public and private industry accounting.  Matthew has experienced success in many area of corporate accounting including: financial and cost accounting, financial state preparation, treasury management, process improvement, federal and state taxes, and budgeting.

Ted Riepma

Ted Riepma

Credit & Office Manager

800-543-3626

Joined Demco in 1991
Raised on a Northwest Iowa farm. Graduated from college with a degree in business administration. Worked 16 years in the banking industry.

Bryan Christoffer

Bryan Christoffer

Operations Manager

800-543-3626

Join Demco in 2012
My love for agriculture came from time on the farm and the travels I had as a young boy, traveling with my father on his implement sales visits to farmers and dealers in Minnesota and Iowa. It is here that I came to appreciate the beauty of a combine in a cornfield on a fall night. I earned my Master’s Degree in Organizational Leadership from Northwestern College. I attribute the success of plant operations to a great team and a solid Lean initiative.

Sales