UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: March 31, 2007 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 May 14, 2007 ------------------------------------- ------------- ------------ [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: 19 Form 13F Information Table Entry Total: 99 Form 13F Information Table Value Total: $57,503,864 (thousands) 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.] FORM 13F FILE NO. NUMBER NAME --- ------------- ---- 1. 28-5678 Berkshire Hathaway Life Insurance Co. of Nebraska 2. 28-10388 BH Columbia Inc. 3. 28-719 Blue Chip Stamps 4. 28-554 Buffett, Warren E. 5. 28-1517 Columbia Insurance Co. 6. 28-2226 Cornhusker Casualty Co. 7. 28-06102 Cypress Insurance Company 8. 28-11217 Fechheimer Brothers Company 9. 28- GEC Investment Managers 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. 28-11222 Nebraska Furniture Mart 16. 28-717 OBH Inc. 17. 28-1357 Wesco Financial Corp. 18. 28-3091 Wesco Financial Ins. Co. 19. 28-3105 Wesco Holdings Midwest, Inc. BERKSHIRE HATHAWAY INC. Form 13F Information Table March 31, 2007 COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 --------------------------------------------------------------------------------------------------------------------------------- TITLE OF VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY NAME OF ISSUER CLASS CUSIP [x$1000] PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE --------------------------------------------------------------------------------------------------------------------------------- American Express Co. Com 025816 10 9 971,513 17,225,400 X 4, 2, 5, 16 17,225,400 450,897 7,994,634 X 4, 12, 16 7,994,634 6,782,432 120,255,879 X 4, 13, 16 120,255,879 109,591 1,943,100 X 4, 3, 16, 17, 18, 19 1,943,100 78,944 1,399,713 X 4, 15, 16 1,399,713 47,366 839,832 X 4, 8, 16 839,832 110,101 1,952,142 X 4, 16 1,952,142 American Standard Companies Com 029712 10 6 586,544 11,062,700 X 4, 9, 10, 11, 13, 16 11,062,700 Ameriprise Financial, Inc. Com 03076C 10 6 83,172 1,455,580 X 4, 2, 5, 16 1,455,580 91,363 1,598,926 X 4, 12, 16 1,598,926 22,206 388,620 X 4, 3, 16, 17, 18, 19 388,620 15,996 279,942 X 4, 15, 16 279,942 9,598 167,966 X 4, 8, 16 167,966 22,309 390,428 X 4, 16 390,428 Anheuser Busch Cos. Inc. Com 035229 10 3 1,794,519 35,563,200 X 4, 13, 16 35,563,200 Block H & R Com 093671 10 5 26,233 1,246,800 X 4, 13, 16 1,246,800 Burlington Northern Santa Fe Com 12189T 10 4 806,301 10,024,876 X 4, 13, 16 10,024,876 1,874,051 23,300,400 X 4, 2, 5, 16 23,300,400 106,337 1,322,100 X 4, 12, 16 1,322,100 Coca Cola Com 191216 10 0 19,200 400,000 X 4, 16 400,000 85,248 1,776,000 X 4, 14, 16 1,776,000 345,869 7,205,600 X 4, 3, 16, 17, 18, 19 7,205,600 1,926,797 40,141,600 X 4, 2, 5, 16 40,141,600 6,717,389 139,945,600 X 4, 13, 16 139,945,600 438,682 9,139,200 X 4, 12, 16 9,139,200 23,040 480,000 X 4, 15, 16 480,000 43,776 912,000 X 4, 7, 16 912,000 Comcast Corp CLA SPL 20030N 20 0 305,640 12,000,000 X 4, 9, 10, 11, 13, 16 12,000,000 Comdisco Holding Co. Com 200334 10 0 12,064 1,206,369 X 4, 13, 16 1,206,369 3,000 300,028 X 4, 2, 5, 16 300,028 170 17,049 X 4, 12, 16 17,049 ConocoPhillips Com 20825C 10 4 1,226,069 17,938,100 X 4, 13, 16 17,938,100 Costco Wholesale Corp. Com 22160K 10 5 282,875 5,254,000 X 4, 13, 16 5,254,000 First Data Corporation Com 319963 10 4 269,000 10,000,000 X 4, 9, 10, 11, 13, 16 10,000,000 Gannett Inc. Com 364730 10 1 194,065 3,447,600 X 4, 13, 16 3,447,600 General Electric Co. Com 369604 10 3 275,027 7,777,900 X 4 7,777,900 ----------- 26,157,384 ----------- BERKSHIRE HATHAWAY INC. Form 13F Information Table March 31, 2007 COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 --------------------------------------------------------------------------------------------------------------------------------- TITLE OF VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY NAME OF ISSUER CLASS CUSIP [x$1000] PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE --------------------------------------------------------------------------------------------------------------------------------- Home Depot Inc. Com 437076 10 2 153,610 4,181,000 X 4, 9, 10, 11, 13, 16 4,181,000 Ingersoll-Rd Company LTD. CLA G47766 10 1 27,583 636,600 X 4 636,000 Iron Mountain Inc. Com 462846 10 6 236,420 9,047,850 X 4, 9, 10, 11, 13, 16 9,047,850 Johnson & Johnson Com 478160 10 4 260,474 4,322,500 X 4 4,322,500 1,221,247 20,266,300 X 4, 2, 5, 16 20,266,300 903,273 14,989,600 X 4, 13, 16 14,989,600 547,595 9,087,200 X 4, 12, 16 9,087,200 Lowes Companies Inc. Com 548661 10 7 220,430 7,000,000 X 4, 9, 10, 11, 13, 16 7,000,000 M & T Bank Corporation Com 55261F 10 4 694,639 5,997,060 X 4, 13, 16 5,997,060 63,243 546,000 X 4, 9, 10, 11, 13, 16 546,000 19,193 165,700 X 4, 12, 16 165,700 Moody's Com 615369 10 5 2,003,334 32,280,600 X 4, 13, 16 32,280,600 975,546 15,719,400 X 4, 9, 10, 11, 13, 16 15,719,400 Nike Inc. Com 654106 10 3 425,040 4,000,000 X 4, 9, 10, 11, 13, 16 4,000,000 Norfolk Southern Corp. Com 655844 10 8 26,661 526,900 X 4, 13, 16 526,900 295,297 5,835,900 X 4, 2, 5, 16 5,835,900 Petrochina Co LTD ADR 71646E 10 0 8,536 72,900 X 4, 13, 16 72,900 68,626 586,100 X 4, 9, 10, 11, 13, 16 586,100 Pier 1 Imports Inc. Com 720279 10 8 10,250 1,483,400 X 4, 9, 10, 11, 13, 16 1,483,400 Proctor & Gamble Co. Com 742718 10 9 3,694,860 58,500,000 X 4, 13, 16 58,500,000 1,280,885 20,280,000 X 4, 2, 5, 16 20,280,000 394,118 6,240,000 X 4, 12, 16 6,240,000 451,878 7,154,500 X 4, 3, 16, 17, 18, 19 7,154,500 49,265 780,000 X 4, 14, 16 780,000 98,530 1,560,000 X 4, 7, 16 1,560,000 346,464 5,485,500 X 4, 9, 10, 11, 13, 16 5,485,500 Sanofi Adventis ADR 80105N 10 5 21,255 488,500 X 4, 9, 10, 11, 13, 16 488,500 7,427 170,700 X 4, 13, 16 170,700 7,366 169,300 X 4, 12, 16 169,300 Servicemaster Company Com 81760N 10 9 61,529 3,998,000 X 4, 9, 10, 11, 13, 16 3,998,000 Sun Trusts Banks Inc. Com 867914 10 3 194,696 2,344,600 X 4, 13, 16 2,344,600 71,414 860,000 X 4, 2, 5, 16 860,000 Torchmark Corp. Com 891027 10 4 5,087 77,551 X 1, 4, 13, 16 77,551 29,498 449,728 X 4, 2, 5, 16 449,728 108,676 1,656,900 X 4, 13, 16 1,656,900 41,958 639,700 X 4, 12, 16 639,700 Tyco International LTD Com 902124 10 6 315,500 10,000,000 X 4, 9, 10, 11, 13, 16 10,000,000 ----------- 15,341,403 ----------- BERKSHIRE HATHAWAY INC. Form 13F Information Table March 31, 2007 COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 --------------------------------------------------------------------------------------------------------------------------------- TITLE OF VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY NAME OF ISSUER CLASS CUSIP [x$1000] PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE --------------------------------------------------------------------------------------------------------------------------------- US Bancorp Com 902973 30 4 815,056 23,307,300 X 4, 2, 5, 16 23,307,300 USG Corporation Com 903293 40 5 796,930 17,072,192 X 4, 13, 16 17,072,192 Union Pacific Corp. Com 907818 10 8 1,067,605 10,513,100 X 4, 2, 5, 16 10,513,100 United Parcel Service Inc. Com 911312 10 6 100,187 1,429,200 X 4 1,429,200 United Health Group Inc. Com 91324P 10 2 54,104 1,021,400 X 4, 9, 10, 11, 13, 16 1,021,400 Wal-Mart Stores, Inc. Com 931142 10 3 891,970 18,998,300 X 4, 13, 16 18,998,300 44,415 946,000 X 4, 9, 10, 11, 13, 16 946,000 Washington Post Co. Cl B 939640 10 8 682,801 894,304 X 4, 13, 16 894,304 113,235 148,311 X 4, 5, 1, 6, 13, 16 148,311 494,874 648,165 X 4, 12, 16 648,165 28,238 36,985 X 4, 14, 16 36,985 Wells Fargo & Co. Del Com 949746 10 1 1,549,898 45,015,920 X 4, 2, 5, 16 45,015,920 70,347 2,043,200 X 4, 3, 16, 17, 18, 19 2,043,200 1,319,118 38,313,040 X 4, 12, 16 38,313,040 95,991 2,788,000 X 4, 14, 16 2,788,000 176,282 5,120,000 X 4, 16 5,120,000 3,159,118 91,754,820 X 4, 13, 16 91,754,820 41,651 1,209,720 X 4, 15, 16 1,209,720 58,531 1,700,000 X 5, 8, 16 1,700,000 10,329 300,000 X 4, 7, 16 300,000 688,600 20,000,000 X 4, 9, 10, 11, 13, 16 20,000,000 550,880 16,000,000 X 4, 1, 6, 13, 16 16,000,000 275,440 8,000,000 X 4 8,000,000 Wellpoint Inc. Com 949773V 10 7 79,454 979,700 X 4, 9, 10, 11, 13, 16 979,700 Wesco Finl Corp. Com 950817 10 6 2,623,420 5,703,087 X 4, 3, 16 5,703,087 Western Union Com 959802 10 9 216,603 9,868,000 X 4, 9, 10, 11, 13, 16 9,868,000 ----------- 16,005,077 ----------- GRAND TOTAL $57,503,864 ===========