BERKSHIRE HATHAWAY INC.

1 UNITED STATESSECURITIES AND EXCHANGE COMMISSIONW ashington, 20549 FORM 10-KANNUAL REPORTPURSUANT TO SECTION 13 OR 15(d) OF THESECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2016 Commission file number 001-14905 BERKSHIRE HATHAWAY INC.(Exact name of Registrant as specified in its charter)Delaware47-0813844 State or other jurisdiction ofincorporation or organization( EmployerIdentification Number)3555 Farnam Street, Omaha, Nebraska68131(Address of principal executive office)(Zip Code)Registrant s telephone number, including area code (402) 346-1400 Securities registered pursuant to Section 12(b) of the Act.

2 Title of each className of each exchange on which registeredClass A common stock, $ Par ValueNew York Stock ExchangeClass B common stock, $ Par ValueNew York Stock ExchangeSecurities registered pursuant to Section 12(g) of the Act: NONEI ndicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of theSecurities Act. Yes No Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 orSection 15(d) of the Act. Yes No Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or15(d) of the Securities Exchange Act of 1934 during the preceding 12 months, and (2) has been subject to suchfiling requirements for the past 90 days.

3 Yes No Indicate by check mark whether the Registrant has submitted electronically and posted on its corporateWebsite, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 ofRegulations S-T during the preceding 12 months. Yes No Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is notcontained herein, and will not be contained, to the best of Registrant s knowledge, in definitive proxy orinformation statements incorporated by reference in Part III of this Form 10-K or any amendment to thisForm 10-K.

4 Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, anon-accelerated filer, or a smaller reporting company. See the definitions of large accelerated filer, accelerated filer and smaller reporting company in Rule 12b-2 of the Exchange Act.:Large accelerated filer Accelerated filer Non-accelerated filer Smaller reporting company Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the ExchangeAct). Yes No State the aggregate market value of the voting stock held by non-affiliates of the Registrant as of June 30,2016: $278,053,000,000*Indicate number of shares outstanding of each of the Registrant s classes of common stock.

5 February 16, 2017 Class A common stock, $5 par ,680 sharesFebruary 16, 2017 Class B common stock, $ par ,304,592,522 sharesDOCUMENTS INCORPORATED BY REFERENCED ocumentIncorporated InProxy Statement for Registrant s annual Meeting to be held May 6, 2017 Part III* This aggregate value is computed at the last sale price of the common stock on June 30, 2016. It does notinclude the value of Class A common stock (316,766 shares) and Class B common stock (70,408,573 shares)held by Directors and Executive Officers of the Registrant and members of their immediate families, some ofwhom may not constitute affiliates for purpose of the Securities Exchange Act of of ContentsPage IItem 1A.

6 Risk 1B. Unresolved Staff of Safety IIItem for Registrant s Common Equity, Related Security Holder Matters andIssuer Purchases of Equity Financial s Discussion and Analysis of Financial Condition and Results 7A. Quantitative and Qualitative Disclosures About Market Statements and Supplementary Balance Sheets December 31, 2016 and December 31, Statements of Earnings Years Ended December 31, 2016, December 31, 2015, and December 31, Statements of Comprehensive Income Years Ended December 31, 2016, December 31, 2015, and December 31, Statements of Changes in Shareholders Equity Years Ended December 31, 2016, December 31, 2015, and December 31, Statements of Cash Flows Years Ended December 31, 2016, December 31, 2015, and December 31.

7 To Consolidated Financial in and Disagreements with Accountants on Accounting and 108 Item 9A. Controls and 108 Item 9B. Other 108 Part IIIItem 10. Directors, Executive Officers and Corporate 109 Item 11. Executive 109 Item 12. Security Ownership of Certain Beneficial Owners and Management and RelatedStockholder 109 Item 13. Certain Relationships and Related Transactions and Director 109 Item 14. Principal Accountant Fees and 109 Part IVItem 15. Exhibits and Financial Statement 110 Exhibit 115 Part IItem 1.

8 BusinessBerkshire HATHAWAY Inc. ( BERKSHIRE , Company or Registrant ) is a holding company owning subsidiaries engaged ina number of diverse business activities. The most important of these are insurance businesses conducted on both a primary basisand a reinsurance basis, a freight rail transportation business and a group of utility and energy generation and distributionbusinesses. BERKSHIRE also owns and operates a large number of other businesses engaged in a variety of activities, as identifiedherein. BERKSHIRE is domiciled in the state of Delaware, and its corporate headquarters are located in Omaha, s operating businesses are managed on an unusually decentralized basis.

9 There are essentially no centralized orintegrated business functions (such as sales, marketing, purchasing, legal or human resources) and there is minimal involvementby BERKSHIRE s corporate headquarters in the day-to-day business activities of the operating businesses. BERKSHIRE s corporateoffice senior management participates in and is ultimately responsible for significant capital allocation decisions, investmentactivities and the selection of the Chief Executive to head each of the operating businesses. It also is responsible for establishingand monitoring BERKSHIRE s corporate governance practices, including, but not limited to, communicating the appropriate toneat the top messages to its employees and associates, monitoring governance efforts, including those at the operating businesses,and participating in the resolution of governance-related issues as and its consolidated subsidiaries employ approximately 367.

10 700 people and Reinsurance BusinessesBerkshire s insurance and reinsurance business activities are conducted through numerous domestic and foreign-basedinsurance entities. BERKSHIRE s insurance businesses provide insurance and reinsurance of property and casualty risks and alsoreinsure life, accident and health risks direct insurance activities, the insurer assumes the risk of loss from persons or organizations that are directly subject tothe risks. Such risks may relate to property, casualty (or liability), life, accident, health, financial or other perils that may arisefrom an insurable event.