Kost Materials was founded by the collaboration of Tony Kost and Jeff Eberhardt. Tony and his family name have been synonymous in the area for over 75 years building the Red River Valley. Jeff has been doing this his whole life working in every position for his father, large corporations and ultimately starting KM. With the passing of Tony, his daughter Nancy jumped in to help Jeff and the team of leaders at KM continue their pattern of growth and success in the area.