Minnesota Media Buying Company
In 1995, Cornerstone Media Group was founded by Mike Clark and Don Epstein. Since then, CMG has grown into a well-respected, thriving media rep firm with a reputation for honesty, integrity, and reliability. Since inception, we’ve never missed a payment to a media client.
In addition to exemplary service to our clients, we pride ourselves on being on the forefront of the industry’s innovation and technology. In 2004, we brought the unblemished success of Cornerstone Media Group to CornerStoreTV.