Lightbank is a financial organization that specializes in making venture capital investments in "disruptive" technology companies in the United States including seed investments, Series A round and late-stage investments. It combines investment with guidance and direct involvement with the companies it invests in. It was founded by Brad Keywell and Eric Lefkofsky. It is headquartered in Chicago and it has made investments in companies in Chicago, New York City, Omaha and the Bay Area.