UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 13F

Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: December 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 February 13, 2008
---------------------------------- ----------------------- -----------------
[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: 21

Form 13F Information Table Entry Total: 106

Form 13F Information Table Value Total: $68,768,137
 (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.] 

NO. FORM 13F FILE 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- Medical Protective Corp.
13. 28-1066 National Fire & Marine
14. 28-718 National Indemnity Co.
15. 28-5006 National Liability & Fire Ins. Co.
16. 28-11222 Nebraska Furniture Mart
17. 28-717 OBH Inc.
18. 28- U.S. Investment Corp.
19. 28-1357 Wesco Financial Corp.
20. 28-3091 Wesco Financial Ins. Co.
21. 28-3105 Wesco Holdings Midwest, Inc.

BERKSHIRE HATHAWAY INC.
Form 13F Information Table
December 31, 2007 

 Column 6
 Column 4 Investment Discretion Column 8
 Column 2 Market Column 5 --------------------- Voting Authority
 Title Column 3 Value Shares or (b) (c) Column 7 --------------------------
Column 1 of CUSIP (In Principal (a) Shared- Shared- Other (a) (b) (c)
Name of Issuer Class Number Thousands) Amount $ Sole Defined Other Managers Sole Shared None
--------------- -------- ------------ ----------- ----------- ---- -------- ------- -------------------- ----------- ------ -------
American
 Express Co. Com 025816 10 9 896,065 17,225,400 X 4, 2, 5, 17 17,225,400
 415,881 7,994,634 X 4, 13, 17 7,994,634
 6,255,711 120,255,879 X 4, 14, 17 120,255,879
 101,080 1,943,100 X 4, 3, 17, 19, 20, 21 1,943,100
 72,813 1,399,713 X 4, 16, 17 1,399,713
 43,688 839,832 X 4, 8, 17 839,832
 101,550 1,952,142 X 4, 17 1,952,142
Ameriprise
 Financial,
 Inc. Com 03076C 10 6 15,428 279,942 X 4, 16, 17 279,942
 21,041 381,800 X 4, 17 381,800
Anheuser
 Busch Cos.
 Inc. Com 035229 10 3 1,861,378 35,371,000 X 4, 14, 17 35,371,000
 10,060 192,200 X 4, 18 192,200
Bank of
 America
 Corp. Com 060505 10 4 375,466 9,100,000 X 4, 9, 10, 11, 14, 17 9,100,000
Burlington
 Northern
 Santa Fe Com 12189T 10 4 5,062,783 60,828,818 X 4, 14, 17 60,828,818
Carmax Inc. Com 143130 10 2 414,750 21,000,000 X 4, 9, 10, 11, 14, 17 21,000,000
Coca Cola Com 191216 10 0 24,548 400,000 X 4, 17 400,000
 108,993 1,776,000 X 4, 15, 17 1,776,000
 442,208 7,205,600 X 4, 3, 17, 19, 20, 21 7,205,600
 2,463,490 40,141,600 X 4, 2, 5, 17 40,141,600
 8,588,461 139,945,600 X 4, 14, 17 139,945,600
 560,873 9,139,200 X 4, 13, 17 9,139,200
 29,458 480,000 X 4, 16, 17 480,000
 55,969 912,000 X 4, 7, 17 912,000
Comcast Corp CLA SPL 20030N 20 0 217,440 12,000,000 X 4, 9, 10, 11, 14, 17 12,000,000
Comdisco
 Holding Co. Com 200334 10 0 11,094 1,217,795 X 4, 13, 17 1,217,795
 2,759 302,862 X 4, 2, 5, 17 302,862
 157 17,209 X 4, 12, 17 17,209
ConocoPhillips Com 20825C 10 4 1,546,018 17,508,700 X 4, 13, 17 17,508,700
Costco
 Wholesale
 Corp. Com 22160K 10 5 366,519 5,254,000 X 4, 13, 17 5,254,000
Gannett Inc. Com 364730 10 1 134,456 3,447,600 X 4, 13, 17 3,447,600
General
 Electric
 Co. Com 369604 10 3 288,321 7,777,900 X 4 7,777,900
GlaxoSmithKline ADR 37733W 10 5 76,114 1,510,500 X 4, 14, 17 1,510,500
Home Depot Inc. Com 437076 10 2 112,636 4,181,000 X 4, 9, 10, 11, 14, 17 4,181,000
Ingersoll-Rd
 Company LTD. CLA G4776G 10 1 29,555 636,600 X 4 636,000
Iron Mountain
 Inc. Com 462846 10 6 172,658 4,663,900 X 4, 9, 10, 11, 14, 17 4,663,900
 ----------
 30,879,421
 ==========

BERKSHIRE HATHAWAY INC.
Form 13F Information Table
December 31, 2007 

 Column 6
 Column 4 Investment Discretion Column 8
 Column 2 Market Column 5 --------------------- Voting Authority
 Title Column 3 Value Shares or (b) (c) Column 7 --------------------------
Column 1 of CUSIP (In Principal (a) Shared- Shared- Other (a) (b) (c)
Name of Issuer Class Number Thousands) Amount $ Sole Defined Other Managers Sole Shared None
--------------- -------- ------------ ----------- ----------- ---- -------- ------- -------------------- ----------- ------ -------
Johnson &
 Johnson Com 478160 10 4 288,311 4,322,500 X 4 4,322,500
 1,351,762 20,266,300 X 4, 2, 5, 17 20,266,300
 1,759,956 26,386,148 X 4, 14, 17 26,386,148
 21,698 325,300 X 4, 3, 17, 19, 20, 21 325,300
 606,116 9,087,200 X 4, 13, 17 9,087,200
 52,826 792,000 X 4, 2, 5, 12, 17 792,000
 38,352 575,000 X 4, 18 575,000
Kraft Foods
 Inc. Com 50075N 10 4 2,757,698 84,514,200 X 4, 14, 17 84,514,200
 966,494 29,619,800 X 4, 2, 5, 17 29,619,800
 326,300 10,000,000 X 4, 3, 17, 19, 20, 21 10,000,000
 8,477 259,800 X 4, 2, 5, 12, 17 259,800
 261,040 8,000,000 X 4 8,000,000
Lowes Companies
 Inc. Com 548661 10 7 158,340 7,000,000 X 4, 9, 10, 11, 14, 17 7,000,000
M & T Bank
 Corporation Com 55261F 10 4 489,180 5,997,060 X 4, 14, 17 5,997,060
 44,537 546,000 X 4, 9, 10, 11, 14, 17 546,000
 13,516 165,700 X 4, 13, 17 165,700
Moody's Com 615369 10 5 1,152,417 32,280,600 X 4, 14, 17 32,280,600
 561,183 15,719,400 X 4, 9, 10, 11, 14, 17 15,719,400
Nike Inc. Com 654106 10 3 490,858 7,641,000 X 4, 9, 10, 11, 14, 17 7,641,000
Norfolk
 Southern
 Corp. Com 655844 10 8 97,500 1,933,000 X 4, 2, 5, 17 1,933,000
Procter &
 Gamble Co. Com 742718 10 9 4,295,070 58,500,000 X 4, 13, 17 58,500,000
 1,597,032 21,752,000 X 4, 2, 5, 17 21,752,000
 458,141 6,240,000 X 4, 13, 17 6,240,000
 525,283 7,154,500 X 4, 3, 17, 19, 20, 21 7,154,500
 57,268 780,000 X 4, 15, 17 780,000
 114,535 1,560,000 X 4, 7, 17 1,560,000
 402,745 5,485,500 X 4, 9, 10, 11, 14, 17 5,485,500
 321,212 4,375,000 X 4 4,375,000
Sanofi Aventis ADR 80105N 10 5 22,241 488,500 X 4, 9, 10, 11, 14, 17 488,500
 116,653 2,562,105 X 4, 14, 17 2,562,105
 7,708 169,300 X 4, 13, 17 169,300
 15,935 350,000 X 4, 2, 5, 12, 17 350,000
Sun Trusts
 Banks Inc. Com 867914 10 3 146,514 2,344,600 X 4, 14, 17 2,344,600
 53,741 860,000 X 4, 2, 5, 17 860,000
Torchmark Corp. Com 891027 10 4 4,694 77,551 X 1, 4, 14, 17 77,551
 27,222 449,728 X 4, 2, 5, 17 449,728
 100,292 1,656,900 X 4, 14, 17 1,656,900
 38,721 639,700 X 4, 13, 17 639,700
 ----------
 19,751,568
 ==========

BERKSHIRE HATHAWAY INC.
Form 13F Information Table
December 31, 2007 

 Column 6
 Column 4 Investment Discretion Column 8
 Column 2 Market Column 5 --------------------- Voting Authority
 Title Column 3 Value Shares or (b) (c) Column 7 --------------------------
Column 1 of CUSIP (In Principal (a) Shared- Shared- Other (a) (b) (c)
Name of Issuer Class Number Thousands) Amount $ Sole Defined Other Managers Sole Shared None
--------------- -------- ------------ ----------- ----------- ---- -------- ------- -------------------- ----------- ------ -------
Trane Inc. Com 892893 10 8 512,054 10,962,400 X 4, 9, 10, 11, 14, 17 10,962,400
US Bancorp Com 902973 30 4 739,774 23,307,300 X 4, 2, 5, 17 23,307,300
 894,225 28,173,426 X 4, 14, 17 28,173,426
 265,505 8,365,000 X 4 8,365,000
 121,158 3,817,200 X 4, 3, 17, 19, 20, 21 3,817,200
 69,003 2,174,000 X 4, 2, 5, 12, 17 2,174,000
 55,386 1,745,000 X 4, 18 1,745,000
USG
 Corporation Com 903293 40 5 611,014 17,072,192 X 4, 14, 17 17,072,192
Union Pacific
 Corp. Com 907818 10 8 559,386 4,453,000 X 4, 2, 5, 17 4,453,000
United Parcel
 Service
 Inc. Com 911312 10 6 101,073 1,429,200 X 4 1,429,200
United Health
 Group Inc. Com 91324P 10 2 349,200 6,000,000 X 4, 9, 10, 11, 14, 17 6,000,000
Wabco Holdings
 Inc. Com 92927K 10 2 135,243 2,700,000 X 4, 9, 10, 11, 14, 17 2,700,000
Wal-Mart
 Stores,
 Inc. Com 931142 10 3 902,989 18,998,300 X 4, 14, 17 18,998,300
 44,963 946,000 X 4, 9, 10, 11, 14, 946,000
 17
Washington
 Post Co. Cl B 939640 10 8 707,779 894,304 X 4, 14, 17 894,304
 117,378 148,311 X 4, 5, 1, 6, 14, 17 148,311
 512,971 648,165 X 4, 13, 17 648,165
 29,271 36,985 X 4, 15, 17 36,985
Wells Fargo &
 Co. Del Com 949746 10 1 1,614,846 53,489,420 X 4, 2, 5, 17 53,489,420
 381,698 12,643,200 X 4, 3, 17, 19, 20, 21 12,643,200
 1,156,671 38,313,040 X 4, 13, 17 38,313,040
 84,170 2,788,000 X 4, 15, 17 2,788,000
 30,190 1,000,000 X 4, 17 1,000,000
 3,882,328 128,596,488 X 4, 14, 17 128,596,488
 36,521 1,209,720 X 4, 16, 17 1,209,720
 51,323 1,700,000 X 4, 8, 17 1,700,000
 24,756 820,000 X 4, 7, 17 820,000
 603,800 20,000,000 X 4, 9, 10, 11, 14, 17 20,000,000
 483,040 16,000,000 X 4, 1, 6, 14, 17 16,000,000
 241,520 8,000,000 X 4 8,000,000
 81,513 2,700,000 X 4, 2, 5, 12, 17 2,700,000
 60,380 2,000,000 X 4, 18 2,000,000
Wellpoint Inc. Com 949773V 10 7 394,785 4,500,000 X 4, 9, 10, 11, 14, 17 4,500,000
Wesco Finl
 Corp. Com 950817 10 6 2,281,235 5,703,087 X 4, 3, 17 5,703,087
 -----------
 18,137,148
 -----------
GRAND TOTAL $68,768,137
 ===========