UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: September 30, 2006 Check here if Amendment [ ]; Amendment Number: ------- This Amendment (Check only one.): [ ] is a restatement. [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Berkshire Hathaway Inc. Address: 1440 Kiewit Plaza Omaha, NE 68131 Form 13F File Number: 28-4545 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Marc D. Hamburg Title: Vice President Phone: 402-346-1400 Signature, Place, and Date of Signing: (s) Marc D. Hamburg Omaha, NE November 13, 2006 ------------------------------------- ------------- ----------------- [Signature] [City, State] [Date] Report Type (Check only one.): [ ] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) [ ] 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) [X] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).) List of Other Managers Reporting for this Manager: Form 13F File Number Name 28-5194 General Re - New England Asset Management, Inc. Form 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 20 Form 13F Information Table Entry Total: 88 Form 13F Information Table Value Total: $49,657,627 (thousands) Confidential information has been omitted from the form 13F and filed separately with the commission. List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. [If there are no entries in this list, state "NONE" and omit the column headings and list entries.] NO. FORM 13F FILE NUMBER NAME --- -------------------- ---- 1. 28-5678 Berkshire Hathaway Life Insurance Co. of Nebraska 2. 28- BH Columbia Inc. 3. 28-5676 BHG Life Insurance Co. 4. 28-719 Blue Chip Stamps 5. 28-554 Buffett, Warren E. 6. 28-1517 Columbia Insurance Co. 7. 28-2226 Cornhusker Casualty Co. 8. 28- Cypress Insurance Company 9. 28- Fechheimer Brothers Company 10. 28-852 GEICO Corp. 11. 28-101 Government Employees Ins. Corp. 12. 28-1066 National Fire & Marine 13. 28-718 National Indemnity Co. 14. 28-5006 National Liability & Fire Ins. Co. 15. 28- Nebraska Furniture Mart 16. 28-717 OBH Inc. 17. 28-2740 Plaza Investment Managers 18. 28-1357 Wesco Financial Corp. 19. 28-3091 Wesco Financial Ins. Co. 20. 28-3105 Wesco Holdings Midwest, Inc. BERKSHIRE HATHAWAY INC. Form 13F Information Table September 30, 2006 Column 6 Investment Discretion Column 8 Column 4 Column 5 --------------------- Voting Authority Column 2 Column 3 Market Shares or (b) (c) Column 7 ----------------------- Column 1 Title of CUSIP Value Principal (a) Shared- Shared- Other (a) (b) (c) Name of Issuer Class Number (In Thousands) Amount $ Sole Defined Other Managers Sole Shared None -------------- -------- ----------- -------------- ----------- ---- ------- -------- --------------------- ----------- ------ ---- American Express Co. Com 025816 10 9 966,000 17,225,400 X 5, 2, 6, 16 17,225,400 448,339 7,994,634 X 5, 12, 16 7,994,634 6,743,950 120,255,879 X 5, 13, 16 120,255,879 108,969 1,943,100 X 5, 4, 16, 18, 19, 20 1,943,100 78,496 1,399,713 X 5, 15, 16 1,399,713 47,098 839,832 X 5, 9, 16 839,832 109,476 1,952,142 X 5, 16 1,952,142 American Standard Companies Com 029712 10 6 464,301 11,062,700 X 5, 10, 11, 13, 16, 17 11,062,700 Ameriprise Financial, Inc. Com 03076C 10 6 161,574 3,445,080 X 5, 2, 6, 16 3,445,080 74,990 1,598,926 X 5, 12, 16 1,598,926 609,023 12,985,575 X 5, 13, 16 12,985,575 18,226 388,620 X 5, 4, 16, 18, 19, 20 388,620 13,129 279,942 X 5, 15, 16 279,942 7,878 167,966 X 5, 9, 16 167,966 18,311 390,428 X 5, 16 390,428 Anheuser Busch Cos. Inc. Com 035229 10 3 1,730,191 36,417,400 X 5, 13, 16 36,417,400 Block H & R Com 093671 10 5 238,510 10,971,000 X 5, 13, 16 10,971,000 Coca Cola Com 191216 10 0 17,872 400,000 X 5, 16 400,000 79,352 1,776,000 X 5, 14, 16 1,776,000 321,946 7,205,600 X 5, 4, 16, 18, 19, 20 7,205,600 1,793,527 40,141,600 X 5, 2, 6, 16 40,141,600 6,252,769 139,945,600 X 5, 13, 16 139,945,600 408,339 9,139,200 X 5, 12, 16 9,139,200 21,446 480,000 X 5, 15, 16 480,000 40,748 912,000 X 5, 8, 16 912,000 Comcast Corp CLA SPL 20030N 20 0 408,966 11,110,200 X 5, 10, 11, 13, 16, 17 11,110,200 Comdisco Holding Co. Com 200334 10 0 16,744 1,206,369 X 5, 13, 16 1,206,369 4,164 300,028 X 5, 2, 6, 16 300,028 237 17,049 X 5, 12, 16 17,049 ConocoPhillips Com 20825C 10 4 1,067,855 17,938,100 X 5, 13, 16 17,938,100 Costco Wholesale Corp. Com 22160K 10 5 261,019 5,254,000 X 5, 13, 16 5,254,000 First Data Corporation Com 319963 10 4 228,700 10,000,000 X 5, 10, 11, 13, 16, 17 10,000,000 Gannett Inc. Com 364730 10 1 195,927 3,447,600 X 5, 13, 16 3,447,600 General Electric Co. Com 369604 10 3 274,560 7,777,900 X 5 7,777,900 ----------- 23,232,632 ----------- BERKSHIRE HATHAWAY INC. Form 13F Information Table September 30, 2006 Column 6 Investment Discretion Column 8 Column 4 Column 5 --------------------- Voting Authority Column 2 Column 3 Market Shares or (b) (c) Column 7 ----------------------- Column 1 Title of CUSIP Value Principal (a) Shared- Shared- Other (a) (b) (c) Name of Issuer Class Number (In Thousands) Amount $ Sole Defined Other Managers Sole Shared None -------------- -------- ----------- -------------- ----------- ---- ------- -------- --------------------- ----------- ------ ---- Home Depot Inc. Com 437076 10 2 151,645 4,181,000 X 5, 10, 11, 13, 16, 17 4,181,000 Iron Mountain Inc. Com 462846 10 6 259,010 6,031,900 X 5, 10, 11, 13, 16, 17 6,031,900 Johnson & Johnson Com 478160 10 4 280,703 4,322,500 X 5 4,322,500 1,316,094 20,266,300 X 5, 2, 6, 16 20,266,300 Lowes Companies Inc. Com 548661 10 7 196,420 7,000,000 X 5, 10, 11, 13, 16, 17 7,000,000 M & T Bank Corporation Com 55261F 10 4 719,407 5,997,060 X 5, 13, 16 5,997,060 65,498 546,000 X 5, 10, 11, 13, 16, 17 546,000 19,877 165,700 X 5, 12, 16 165,700 Moody's Com 615369 10 5 2,110,506 32,280,600 X 5, 13, 16 32,280,600 1,027,734 15,719,400 X 5, 10, 11, 13, 16, 17 15,719,400 Nike Inc. Com 654106 10 3 350,480 4,000,000 X 5, 10, 11, 13, 16, 17 4,000,000 OSI Restaurant Partners, Inc. Com 67104A 10 1 57,674 1,818,800 X 5, 10, 11, 13, 16, 17 1,818,800 Petrochina Co LTD ADR 71646E 10 0 7,848 72,900 X 5, 13, 16 72,900 63,094 586,100 X 5, 10, 11, 13, 16, 17 586,100 Pier 1 Imports Inc. Com 720279 10 8 24,412 3,290,000 X 5, 10, 11, 13, 16, 17 3,290,000 Proctor & Gamble Co. Com 742718 10 9 3,625,830 58,500,000 X 5, 13, 16 58,500,000 1,256,954 20,280,000 X 5, 2, 6, 16 20,280,000 386,755 6,240,000 X 5, 12, 16 6,240,000 443,436 7,154,500 X 5, 4, 16, 18, 19, 20 7,154,500 48,344 780,000 X 5, 14, 16 780,000 96,689 1,560,000 X 5, 8, 16 1,560,000 339,991 5,485,500 X 5, 10, 11, 13, 16, 17 5,485,500 Sanofi Adventis ADR 80105N 10 5 21,724 488,500 X 5, 10, 11, 13, 16, 17 488,500 Sealed Air Corporation Com 81211K 10 0 36,677 677,700 X 5, 13, 16 677,700 Servicemaster Company Com 81760N 10 9 44,818 3,998,000 X 5, 10, 11, 13, 16, 17 3,998,000 Sun Trusts Banks Inc. Com 867914 10 3 181,190 2,344,600 X 5, 13, 16 2,344,600 66,461 860,000 X 5, 2, 6, 16 860,000 Target Corp Com 87612E 10 6 41,200 745,700 X 5 745,700 Torchmark Corp. Com 891027 10 4 4,894 77,551 X 1, 5, 13, 16 77,551 28,382 449,728 X 5, 2, 6, 16 449,728 104,567 1,656,900 X 5, 13, 16 1,656,900 40,371 639,700 X 5, 12, 16 639,700 Tyco International LTD Com 902124 10 6 279,900 10,000,000 X 5, 10, 11, 13, 16, 17 10,000,000 USG Corporation Com 903293 40 5 785,615 16,700,992 X 5, 13, 16 16,700,992 United Parcel Service Inc. Com 911312 10 6 102,817 1,429,200 X 5 1,429,200 Wal-Mart Stores, Inc. Com 931142 10 3 936,996 18,998,300 X 5, 13, 16 18,998,300 46,657 946,000 X 5, 10, 11, 16, 17 946,000 ----------- 15,570,670 ----------- BERKSHIRE HATHAWAY INC. Form 13F Information Table September 30, 2006 Column 6 Investment Discretion Column 8 Column 4 Column 5 --------------------- Voting Authority Column 2 Column 3 Market Shares or (b) (c) Column 7 ----------------------- Column 1 Title of CUSIP Value Principal (a) Shared- Shared- Other (a) (b) (c) Name of Issuer Class Number (In Thousands) Amount $ Sole Defined Other Managers Sole Shared None -------------- -------- ----------- -------------- ----------- ---- ------- -------- --------------------- ----------- ------ ---- Washington Post Co. Cl B 939640 10 8 659,102 894,304 X 5, 13, 16 894,304 109,305 148,311 X 5, 1, 3, 7, 13, 16 148,311 477,698 648,165 X 5, 12, 16 648,165 27,258 36,985 X 5, 14, 16 36,985 Wells Fargo & Co. Del Com 949746 10 1 1,441,658 39,846,820 X 5, 2, 6, 16 39,846,820 73,922 2,043,200 X 5, 4, 16, 18, 19, 20 2,043,200 1,187,614 32,825,140 X 5, 12, 16 32,825,140 100,870 2,788,000 X 5, 14, 16 2,788,000 185,242 5,120,000 X 5, 16 5,120,000 2,778,939 76,808,720 X 5, 13, 16 76,808,720 43,768 1,209,720 X 5, 15, 16 1,209,720 61,506 1,700,000 X 5, 9, 16 1,700,000 10,854 300,000 X 5, 8, 16 300,000 723,600 20,000,000 X 5, 10, 11, 13, 16, 17 20,000,000 289,440 8,000,000 X 5 8,000,000 Wesco Finl Corp. Com 950817 10 6 2,492,249 5,703,087 X 5, 4, 16 5,703,087 Western Union Com 959802 10 9 191,300 10,000,000 X 5, 10, 11, 13, 16, 17 10,000,000 ----------- 10,854,325 ----------- GRAND TOTAL $49,657,627 ===========