Cornerstone Members are made of Kansas’s strongest, most influential businesses. Membership in this elite group has its privileges – invitations to exclusive events and the opportunity to serve on influential committees and councils. The most important benefit of Cornerstone Membership, however, is the fact that you have a seat at the table when public policy that impacts your business is being made. The minimum annual investment for our Cornerstone Membership is $5,000. Below are the Kansas Chamber Cornerstone Members.