Ketchum is a global public relations firm, offering marketing, branding, and corporate communications services in the corporate, healthcare, food and beverage and technology industries. George Ketchum founded the firm as a Pittsburgh-based advertising company in 1923. It later evolved to include a public relations practice. The firm is headquartered New York City and with offices and affiliates in North America, EMEA, Asia Pacific, and Latin America. The agency has been owned by Omnicom Group since 1996. Ketchum merged with Düsseldorf-based Pleon in one of the industry’s largest mergers in 2009. It has been led by Chairman and CEO Rob Flaherty since 2012.