James River Group Holdings, Ltd. operates as an insurance holding company, delivering specialized insurance and reinsurance offerings across the United States through its subsidiary companies. Its business activities are divided into three main operational units: Excess and Surplus Lines, Specialty Admitted Insurance, and Casualty Reinsurance. The Excess and Surplus Lines division is responsible for underwriting commercial liability and property insurance for non-standard or unique risks, with its coverage extending nationwide across all U.S. states and the District of Columbia. The distribution of these insurance products is primarily handled by wholesale insurance brokers. Conversely, the Specialty Admitted Insurance segment focuses on providing workers' compensation protection. This includes serving industries such as construction trades, healthcare professionals, general goods and services, light manufacturing, specialized transportation, and farming. This unit also engages in fronting and program insurance ventures. Finally, the Casualty Reinsurance segment offers both proportional and working layer casualty reinsurance solutions to a range of third-party clients and other insurance providers. James River Group Holdings, Ltd. was established in 2002 and maintains its corporate headquarters in Pembroke, Bermuda.