BRK.A

Berkshire Hathaway Inc

Berkshire Hathaway Inc. (“Berkshire,” “Company” or “Registrant”) is a holding company owning subsidiaries engaged in a number of diverse business activities. The most important of these are insurance businesses conducted on both a primary basis and a reinsurance basis. Berkshire also owns and operates a large number of other businesses engaged in a variety of activities, as identified herein. Berkshire is domiciled in the state of Delaware, and its corporate headquarters is located in Omaha, Nebraska.

Berkshire’s operating businesses are managed on an unusually decentralized basis. There are essentially no centralized or integrated business functions (such as sales, marketing, purchasing, legal or human resources) and there is minimal involvement by Berkshire’s corporate headquarters in the day-to-day business activities of the operating businesses. Berkshire’s corporate office management participates in and is ultimately responsible for significant capital allocation decisions, investment activities and the selection of the Chief Executive to head each of the operating businesses.

Insurance and Reinsurance Businesses

Berkshire’s insurance and reinsurance business activities are conducted through approximately 70 domestic and foreign-based insurance entities. Berkshire’s insurance businesses provide insurance and reinsurance of property and casualty risks world-wide and also reinsure life, accident and health risks world-wide.

In primary (or direct) insurance activities, the insurer assumes the risk of loss from persons or organizations that are directly subject to the risks. Such risks may relate to property, casualty (or liability), life, accident, health, financial or other perils that may arise from an insurable event. In reinsurance activities, the reinsurer assumes defined portions of risks that other primary insurers or reinsurers have assumed in their own insuring activities.

Reinsurance contracts are normally classified as treaty or facultative contracts. Treaty reinsurance refers to reinsurance coverage for all or a portion of a specified class of risks ceded by the primary insurer, while facultative reinsurance involves coverage of specific individual risks. Reinsurance contracts are further classified as quota-share or excess. Under quota-share (proportional or pro-rata) reinsurance, the reinsurer shares proportionally in the original premiums, losses and expenses of the primary insurer or reinsurer. Excess (or non-proportional) reinsurance provides for the indemnification of the primary insurer or reinsurer for all or a portion of the loss in excess of an agreed upon amount or “retention.” Both quota-share and excess reinsurance may provide for aggregate limits of indemnification.

Property/Casualty Reinsurance

General Re’s property/casualty reinsurance business in North America is conducted through GRC domiciled in Delaware and licensed in the District of Columbia and all states but Hawaii where it is an accredited reinsurer. Property/casualty operations in North America are headquartered in Stamford, Connecticut, and are also conducted through 16 branch offices in the U.S. and Canada. Reinsurance activities are marketed directly to clients without involving a broker or intermediary. Coverages are written primarily on an excess basis and under treaty and facultative contracts. In 2009, approximately 28% of net written premiums in North America related to casualty reinsurance coverages and 56% related to property reinsurance coverages.

Life/Health Reinsurance

General Re’s North American and international life, health, long-term care and disability reinsurance coverages are written on an individual and group basis. Most of this business is written on a proportional treaty basis, with the exception of the U.S. group health and disability business which is predominately written on an excess treaty basis. Lesser amounts of life and disability business are written on a facultative basis. The life/health business is marketed on a direct basis. In 2009, approximately 42% of life/health net premiums were written in the United States, 29% were written in Western Europe and the remaining 29% were written throughout the rest of the world.

Railroad Business

On February 12, 2010, Berkshire completed its acquisition of Burlington Northern Santa Fe Corporation (“BNSF”). BNSF operates one of the largest railroad systems in North America with approximately 32,000 route miles of track, excluding multiple main tracks, yard tracks and sidings, approximately 23,000 miles of which are owned route miles, including easements, in 28 states and two Canadian provinces. Approximately 9,000 route miles of BNSF’s system consist of trackage rights that permit BNSF to operate its trains with its crews over other railroads’ tracks. BNSF has approximately 35,000 employees.

Finance and Financial Products

Clayton Homes, Inc. (“Clayton”), headquartered near Knoxville, Tennessee, is a vertically integrated manufactured housing company. At December 31, 2009, Clayton operated 36 manufacturing plants in 12 states. Clayton’s homes are marketed in 48 states through a network of 1,503 retailers, including 385 company-owned home centers. Financing is offered to purchasers of Clayton’s manufactured homes as well as those purchasing homes from selected independent retailers, through its finance subsidiaries. Clayton is also currently developing 24 housing subdivisions in eight states.