The Company, headquartered in El Dorado, Arkansas, was originally incorporated in Louisiana in 1950 as Murphy Corporation. It was reincorporated in Delaware in 1964, at which time it adopted the name Murphy Oil Corporation. But, the Company's roots go back to a lumber and banking business in South Arkansas and, more directly, to 1907, when the first oil production was established in the Caddo Field in North Louisiana. Thereafter, oil and gas were important phases of the business. Until the mid 1930's however, oil and gas remained subordinate to timber operations and banking.

Today, Murphy Oil Corporation is a worldwide oil and gas exploration and production company with refining and marketing operations in the United States and the United Kingdom. The Company's farm, timber and real estate subsidiary was spun-off to shareholders in 1996 and is now known as Deltic Timber Corporation.

Business activities are conducted by wholly-owned subsidiaries while Murphy Oil Corporation acts as a holding company.

Murphy Exploration & Production Company, (Murphy EXPRO) is engaged worldwide in crude oil and natural gas exploration and production. Murphy EXPRO is headquartered in Houston, Texas.

Murphy Oil USA, Inc., (MOUSA) is engaged in refining, marketing and transportation of petroleum products in the United States. It is headquartered in El Dorado at Murphy's corporate offices. MOUSA's refineries are in Meraux, Louisiana, and Superior, Wisconsin.

A division of MOUSA, Murphy USA Marketing Co., operates retail gasoline stations under the Murphy USA® brand across 20 states in the U.S. These are high-volume, low-cost retail gasoline stations, primarily in the parking areas of Wal-Mart Supercenters. The first Murphy USA station was opened in December 1996.

MOUSA also operates a network of 12 Company-owned terminals. These terminals, along with numerous third-party terminals, provide fuel supply to retail and branded wholesale stations throughout 23 states.

Murphy Oil Company, Ltd., (MOCL) is engaged in crude oil and natural gas exploration and production and the extraction and sale of synthetic crude oil. MOCL's headquarters are located in Calgary, Alberta, Canada.

Murphy Eastern Oil Company, (MEOC) provides technical and professional services to certain of Murphy Oil Corporation's subsidiaries engaged in crude oil and natural gas exploration and production in the Eastern Hemisphere, and refining, marketing and transporting of petroleum products in the United Kingdom primarily under the MURCO® brand. The Company owns a 108,000 barrel per day refinery in the Milford Haven, Wales. MEOC is headquartered in St. Albans, Hertfordshire, England.

Murphy Sarawak Oil Co.Ltd., Murphy Sabah Oil Co. Ltd., Murphy Peninsular Malaysia Oil Co. Ltd. In 1999, Murphy opened an office in Kuala Lumpur to oversee its E&P activities in Malaysia. Strategic investments in Malaysia are done through these subsidiaries.