BERKSHIRE HATHAWAY INC.

1 REPORTB usiness ActivitiesBerkshire HATHAWAY a holding company owning subsidiaries that engage in a number of diversebusiness activities including property and casualty insurance and reinsurance , utilities and energy, freight railtransportation, finance, manufacturing, services and retailing. Included in the group of subsidiaries thatunderwrite property and casualty insurance and reinsurance is GEICO, the third largest private passenger autoinsurer in the United States and two of the largest reinsurers in the world, General Re and the BerkshireHathaway reinsurance Group. Other subsidiaries that underwrite property and casualty insurance includeNational Indemnity Company and affiliated insurance entities, Medical Protective Company, AppliedUnderwriters, Liability Insurance Company, Central States Indemnity Company, Kansas Bankers Surety,Cypress Insurance Company, and several other subsidiaries referred to as the Homestate Companies.

2 MidAmerican Energy Holdings Company ( MidAmerican ) is an international energy holding companyowning a wide variety of operating companies engaged in the generation, transmission and distribution of MidAmerican s operating energy companies are Northern Electric and Yorkshire Electricity;MidAmerican Energy Company; Pacific Power and Rocky Mountain Power; and Kern River Gas TransmissionCompany and Northern Natural Gas. In addition, MidAmerican owns HomeServices of America, a real estatebrokerage firm. Burlington Northern Santa Fe Corporation ( BNSF ), acquired by BERKSHIRE on February 12,2010, operates one of the largest railroad systems in North America.

3 In serving the Midwest, Pacific Northwestand the Western, Southwestern and Southeastern regions and ports of the , BNSF transports a range ofproducts and commodities derived from manufacturing, agricultural and natural resource s finance and financial products businesses primarily engage in proprietary investing strategies(BH Finance), commercial and consumer lending( BERKSHIRE HATHAWAY Credit CorporationandClayton Homes)and transportation equipment and furniture leasing(XTRAandCORT). McLane Companyis a wholesaledistributor of groceries and nonfood items to discount retailers, convenience stores, quick service restaurants Marmon Groupis an international association of approximately 130 manufacturing and servicebusinesses that operate independently within diverse business Industriesis the world s largestmanufacturer of tufted broadloom business activities are conducted through BERKSHIRE s other manufacturing, services and Mooreis a formulator.

4 Manufacturer and retailer of architectural and industrial Manvilleis a leading manufacturer of insulation and building Building Brandsis amanufacturer of face brick and concrete masonry steel connector products andengineering software for the building components of the Loom, Russell, Vanity Fair, Garan,Fechheimer, Brown Shoe GroupandJustin Brandsmanufacture, license and distribute apparel andfootwear under a variety of brand Internationalprovides training to aircraft fractional ownership programs for general aviation Furniture Mart, Home Furnishings, Star FurnitureandJordan s Furnitureare retailers of home ,Helzberg Diamond ShopsandBen Bridge Jewelerare retailers of fine addition, other manufacturing, service and retail businesses include:The Buffalo News,a publisher of adaily and Sunday newspaper;See s Candies,a manufacturer and seller of boxed chocolates and otherconfectionery products;Scott Fetzer,a diversified manufacturer and distributor of commercial and industrialproducts;Albecca,a designer, manufacturer and distributor of high-quality picture framing products.

5 CTBI nternational,a manufacturer of equipment for the livestock and agricultural industries;International DairyQueen,a licensor and service provider to about 5,800 stores that offer prepared dairy treats and food;ThePampered Chef,the premier direct seller of kitchen tools in the ;Forest River,a leading manufacturer ofleisure vehicles in the ;Business Wire,the leading global distributor of corporate news, multimedia andregulatory filings;Iscar Metalworking Companies,an industry leader in the metal cutting tools business;TTI,Inc.,a leading distributor of electronic components andRichline Group,a leading jewelry decisions for the various BERKSHIRE businesses are made by managers of the business decisions and all other capital allocation decisions are made for BERKSHIRE and its subsidiaries byWarren E.

6 Buffett, in consultation with Charles T. Munger. Mr. Buffett is Chairman and Mr. Munger is ViceChairman of BERKSHIRE s Board of Directors.** BERKSHIRE HATHAWAY ANNUAL REPORTTABLE OF CONTENTSB usiness Front CoverCorporate Performance vs. the S&P 2 Chairman s Letter*.. 3 Selected Financial Data For The Past Five 21 Acquisition 22 Management s Report on Internal Control Over Financial 22 Report of Independent Registered Public Accounting 23 Consolidated Financial 24 Management s 61 Owner s 89 Common Stock 95 Operating 96 Directors and Officers of the Back Cover*Copyright 2010 By Warren E.

7 BuffettAll Rights ReservedBerkshire s Corporate Performance vs. the S&P 500 Annual Percentage ChangeYearin Per-ShareBook Value ofBerkshire(1)in S&P 500with DividendsIncluded(2)RelativeResults(1)-( 2) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )( ) ( ) ( ) (.4) ( )( ) ( )Compounded Annual Gain Gain ,057%5,430%Notes:Data are for calendar years with these exceptions: 1965 and 1966, year ended 9/30; 1967, 15 months ended12 in 1979, accounting rules required insurance companies to value the equity securities they hold at marketrather than at the lower of cost or market, which was previously the requirement.

8 In this table, BERKSHIRE s resultsthrough 1978 have been restated to conform to the changed rules. In all other respects, the results are calculated usingthe numbers originally S&P 500 numbers arepre-taxwhereas the BERKSHIRE numbers areafter-tax. If a corporation such as Berkshirewere simply to have owned the S&P 500 and accrued the appropriate taxes, its results would have lagged the S&P 500in years when that index showed a positive return, but would have exceeded the S&P 500 in years when the indexshowed a negative return. Over the years, the tax costs would have caused the aggregate lag to be HATHAWAY the Shareholders of BERKSHIRE HATHAWAY Inc.

9 :Our gain in net worth during 2009 was $ billion, which increased the per-share book value of bothour Class A and Class B stock by Over the last 45 years (that is, since present management took over)book value has grown from $19 to $84,487, a rate of compounded annually.* BERKSHIRE s recent acquisition of Burlington Northern Santa Fe (BNSF) has added at least 65,000shareholders to the 500,000 or so already on our books. It s important to Charlie Munger, my long-time partner,and me thatallof our owners understand BERKSHIRE s operations, goals, limitations and culture. In each annualreport, consequently, we restate the economic principles that guide us.

10 This year these principles appear on pages89-94 and I urge all of you but particularly our new shareholders to read them. BERKSHIRE has adhered to theseprinciples for decades and will continue to do so long after I m this letter we will also review some of the basics of our business, hoping to provide both a freshmanorientation session for our BNSF newcomers and a refresher course for BERKSHIRE We Measure OurselvesOur metrics for evaluating our managerial performance are displayed on the facing page. From the start,Charlie and I have believed in having a rational and unbending standard for measuring what we have or havenot accomplished.