
Sam Ziegler
Sam Ziegler has a passion for all things related to agriculture. Being a part of providing food, feed, fuel and fiber to families in our area to families abroad is such an amazing profession to be a part of. In this position, Ziegler works with key ag stakeholders building coalitions along with developing and executing key strategic initiatives that are essential components to realize the aspirations of GreenSeam. Sam spent nearly ten years with the Minnesota Soybean Research & Promotion Council and Minnesota Soybean Growers Association and is a fourth generation partner and operator of Ziegler Farms, located near Good Thunder. Sam enjoys being a father and husband, and for fun he likes playing baseball, hanging at the lake or hunting.

Holly Callaghan
Holly is a Minnesota native, born and raised in the suburbs of St. Paul. She grew up around the University of Minnesota Extension campus where she grew to love our lush, productive Minnesota soil. She moved to Mankato in 2020 after graduating from North Central University with a degree in Business. After working in local finance and developing a knowledge of the businesses that proudly call our region home, Holly became passionate about the Greater Mankato economy—particularly agriculture. In her free time, she enjoys trail running, playing in her band, and spending time with her husband & black lab.

Ben Muehlenhardt
Ben’s hometown is Little Falls, Minnesota, but for the last the five years, he has come to love and call the Mankato area home. In a few short months, he will complete his Marketing Management degree at South Central College. He has a passion for graphic design as he is self-taught in Adobe Illustrator and is incredibly excited to refine his skills with this position at Greater Mankato Growth. Ben likes to cook and bake in his spare time, which comes from spending weekends with his grandmother as a child. He also likes to play the guitar, spend time with his girlfriend of four years and their dog, and watch the Minnesota Vikings.