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FORM 10 - Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 ( Mark One ) □ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30 , 2021 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from Commission file number 001-14905 BERKSHIRE HATHAWAY INC . ( Exact name of registrant as specified in its charter ) Delaware ( State or other jurisdiction of incorporation or organization ) Class A Common Stock Class B Common Stock 0.750 % Senior Notes due 2023 1.125 % Senior Notes due 2027 1.625 % Senior Notes due 2035 1.300 % Senior Notes due 2024 2.150 % Senior Notes due 2028 0.625 % Senior Notes due 2023 0.000 % Senior Notes due 2025 2.375 % Senior Notes due 2039 0.500 % Senior Notes due 2041 2.625 % Senior Notes due 2059 Securities registered pursuant to Section 12 ( b ) of the Act : Title of each class 3555 Farnam Street , Omaha , Nebraska 68131 ( Address of principal executive office ) ( Zip Code ) ( 402 ) 346-1400 ( Registrant's telephone number , including area code ) ( Former name , former address and former fiscal year , if changed since last report ) Trading Symbols to BRK.A BRK.B BRK23 BRK27 BRK35 BRK24 BRK28 BRK23A BRK25 BRK39 BRK41 BRK59 47-0813844 ( I.R.S. Employer Identification Number ) Name of each exchange on which registered New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange Indicate by check mark whether the Registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes No Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( §232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes No Number of shares of common stock outstanding as of October 27 , 2021 : Class A Class B - Indicate by check mark whether the Registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , smaller reporting company , or an emerging growth company . See the definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer Non - accelerated filer Accelerated filer Smaller reporting company Emerging growth company If an emerging growth company , indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the Registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes No 区 ooo 619,938 1,303,476,707