Our Clients and Partners
At Hartman Cosco, we represent a wide range of clients, from major multi-national corporations to small non-profit
organizations. Regardless of size, each client receives the same dedication, commitment to service, and uncompromising attention to detail that has helped us achieve a track record of successful results for those we serve. Whether you are interested in engaging with state government in Charleston, counties and municipalities, or the federal government in Washington, D.C., our team is well-positioned to help you achieve your policy goals.