Omnicom Experiential Group is a privately owned company headquartered in the United States. It is a subsidiary of Omnicom Group Inc., a large global marketing and corporate communications company. The Experiential Group focuses on creating and executing live experiences and events for clients, encompassing areas such as brand activations, event marketing, and other forms of experiential marketing. Further details regarding its specific services, client base, and financial performance are not readily available in the provided context.