Mark Sigler came to Indiana Farm Bureau in June 1987 as a staff member in the Commodity Division. He was then appointed to head the organization division in September 1989. In December 1993, Sigler was named corporate secretary by IFB President Harry Pearson to replace the retiring Marvin Metzger. After the election of Don Villwock to the office of IFB president in December 2001, Sigler's title was changed to chief operating officer; he was also named treasurer of IFB at that same time.
Sigler has served as a 4-H volunteer and 4-H Association president in Madison County. In 2002 he was elected to a four-year term on the Indiana State Fair Board, representing 19 east-central counties in the fair board’s District 4.
Before coming to Farm Bureau, Sigler worked with Farm Credit Services in Henry and Rush counties. Prior to that, he worked for seven years in the Cooperative Extension Service in Elkhart and Rush counties.
Sigler received his bachelor's degree in agriculture education from Purdue and his master's degree in adult and community education from Ball State University.
He lives with his wife, Dee Dee, near Frankton, Ind. He has two grown children.