Document:

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                                                                     EXHIBIT 4.3

THIS DEBT SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A
NOMINEE THEREOF. THIS DEBT SECURITY MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR
A SECURITY REGISTERED, AND NO TRANSFER OF THIS DEBT SECURITY IN WHOLE OR IN PART
MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITARY OR A
NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO BERKSHIRE HATHAWAY
FINANCE CORPORATION OR ITS AGENT FOR REGISTRATION OR TRANSFER, EXCHANGE, OR
PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR
IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND
ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN
AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR
VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED
OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

THIS DEBT SECURITY HAS NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF
1933, AS AMENDED (THE "SECURITIES ACT"), AND MAY NOT BE SOLD OR OTHERWISE
TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION
THEREFROM. EACH PURCHASER OF THE DEBT SECURITY EVIDENCED HEREBY IS NOTIFIED THAT
THE SELLER MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF
THE SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER.

THIS DEBT SECURITY MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED
EXCEPT (A) (1) TO A PERSON WHO THE TRANSFEROR REASONABLY BELIEVES IS A QUALIFIED
INSTITUTIONAL BUYER WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT
ACQUIRING FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL
BUYER IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A, (2) IN AN OFFSHORE
TRANSACTION COMPLYING WITH RULE 903 OR RULE 904 OF REGULATION S UNDER THE
SECURITIES ACT, (3) PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE
SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER (IF AVAILABLE) OR (4) PURSUANT TO
AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT, AND (B) IN
ACCORDANCE WITH ALL APPLICABLE SECURITIES LAWS OF THE STATES OF THE UNITED
STATES AND OTHER JURISDICTIONS.

THIS DEBT SECURITY AND ANY RELATED DOCUMENTATION MAY BE AMENDED OR SUPPLEMENTED
FROM TIME TO TIME TO MODIFY THE RESTRICTIONS ON RESALES AND OTHER TRANSFERS OF
THIS DEBT SECURITY TO REFLECT ANY CHANGE IN APPLICABLE LAW OR REGULATION (OR THE
INTERPRETATION THEREOF) OR IN PRACTICES RELATING TO THE RESALE OR TRANSFER OF
RESTRICTED SECURITIES GENERALLY. THE HOLDER OF THIS DEBT SECURITY SHALL BE
DEEMED BY THE ACCEPTANCE HEREOF TO HAVE AGREED TO ANY SUCH AMENDMENT OR
SUPPLEMENT.

<PAGE>

                     BERKSHIRE HATHAWAY FINANCE CORPORATION

            --------------------------------------------------------

                           4.85% SENIOR NOTES DUE 2015

                                                              CUSIP: 084664 AS 0
                                                              ISIN: US084664AS09

NO.                                                                 $___________
                                        (as revised by the Schedule of Increases
                               and Decreases in Global Security attached hereto)

        BERKSHIRE HATHAWAY FINANCE CORPORATION, a corporation duly organized and
existing under the laws of the State of Delaware (herein called the "Company",
which term includes any successor Person under the Indenture hereinafter
referred to), for value received, hereby promises to pay to CEDE & CO., the
registered Holder hereof, the principal sum of              ($                 )
(as revised by the Schedule of Increases and Decreases in Global Security
attached hereto) on January 15, 2015, and to pay interest thereon from and
including January 11, 2005 or from and including the most recent Interest
Payment Date (as defined below) to which interest has been paid or duly provided
for, semi-annually on January 15 and July 15 in each year, commencing July 15,
2005 (each an "Interest Payment Date"), at the rate of 4.85% per annum (as
adjusted, if at all, pursuant to such Indenture, the "Interest Rate"), until the
principal hereof is paid or made available for payment; provided that any
principal, and any such installment of interest, which is overdue shall bear
interest at the Interest Rate (to the extent that the payment of such interest
shall be legally enforceable), from the dates such amounts are due until they
are paid or made available for payment, and such interest shall be payable on
demand. The interest so payable, and punctually paid or duly provided for, on
any Interest Payment Date will, as provided in such Indenture, be paid to the
Person in whose name this Debt Security (or one or more Predecessor Securities)
is registered at the close of business on the Regular Record Date for such
interest. Any such interest not so punctually paid or duly provided for will
forthwith cease to be payable to the Holder on such Regular Record Date and may
either be paid to the Person in whose name this Debt Security (or one or more
Predecessor Securities) is registered at the close of business on a Special
Record Date for the payment of such Defaulted Interest to be fixed by the
Trustee, notice whereof shall be given to Holders of Debt Securities of this
series not less than 10 days prior to such Special Record Date, or be paid at
any time in any other lawful manner not inconsistent with the requirements of
any securities exchange on which the Debt Securities of this series may be
listed, and upon such notice as may be required by such exchange, all as more
fully provided in such Indenture.

        Payment of the principal of and interest on this Debt Security will be
made at the office or agency of the Company maintained for that purpose in the
City of New York, New York (or, if the Company does not maintain such office or
agency, at the corporate trust office of the Trustee in the City of New York or
if the Trustee does not maintain an office in the City of New York, at the
office of a Paying Agent in the City of New York), in such coin or currency of
the United States of America as at the time of payment is legal tender for
payment of public and private debt; provided, however, that at the option of the
Company payments of principal or interest may be made by check mailed to the
address of the Person entitled thereto as such address shall appear in the
Security Register.

        This Debt Security may be redeemed, in whole or in part, at the option
of the Company, at any time prior to its maturity at a redemption price equal to
the greater of (A) 100% of the principal amount to be redeemed or (B) as
determined by the Quotation Agent, the sum of the

<PAGE>

present values of the remaining scheduled payments of principal and interest on
the portion of this Debt Security being redeemed, not including any portion of
such payments of interest accrued as of the date fixed for redemption,
discounted to the date fixed for redemption on a semi-annual basis assuming a
360-day year consisting of twelve 30-day months, at the Adjusted Treasury Rate
plus twelve and a half (12.5) basis points, plus, in each case, accrued interest
on the portion of this Debt Security being redeemed to the date fixed for
redemption.

        The Quotation Agent will select a Comparable Treasury Issue, and the
Reference Dealers will provide the Company and the Trustee with the Reference
Dealer Quotations. The Company will calculate the Comparable Treasury Price.

        "Adjusted Treasury Rate" means, for any date fixed for redemption, the
rate per year equal to the semi-annual equivalent yield to maturity of the
Comparable Treasury Issue assuming a price for the Comparable Treasury Issue
equal to the Comparable Treasury Price for the date fixed for redemption, in
each case expressed as a percentage of its principal amount.

        "Comparable Treasury Issue" means, for any date fixed for redemption,
the U.S. Treasury security selected by the Quotation Agent which has a maturity
comparable to the remaining maturity of this Debt Security as of the date fixed
for redemption, which would be used in accordance with customary financial
practice to price new issues of corporate debt securities with a maturity
comparable to the remaining maturity of this Debt Security as of the date fixed
for redemption.

        "Comparable Treasury Price" means, for any Comparable Treasury Issue,
the price after eliminating the highest and the lowest Reference Dealer
Quotations and then calculating the average of the remaining Reference Dealer
Quotations; provided, however, if the Company obtains fewer than three Reference
Dealer Quotations, the Company will, when calculating the Comparable Treasury
Price, calculate the average of all the Reference Dealer Quotations and not
eliminate any such quotations.

        "Quotation Agent" means Goldman, Sachs & Co. or its successor.

        "Reference Dealers" means Goldman, Sachs & Co. or its successor and two
or more other primary U.S. Government securities dealers in the City of New York
appointed by the Company, provided, however, that if Goldman, Sachs & Co. or its
successor ceases to be a primary U.S. Government securities dealer, the Company
will appoint another primary U.S. Government securities dealer as a substitute.

        "Reference Dealer Quotations" means, for any Comparable Treasury Issue,
the average of the bid and asked prices for such Comparable Treasury Issue
(expressed in each case as a percentage of its principal amount) quoted in
writing by the Reference Dealers to the Company and the Trustee as of 5:00 p.m.
(EST) on the third business day before the relevant date fixed for redemption.

        "Regular Record Date" means, with respect to any Interest Payment Date,
January 1 or July 1, as the case may be, immediately preceding such Interest
Payment Date.

        The Company may elect to effect a redemption in accordance with these
provisions at any time and on any date. However, the Company must give the
Holders of this Debt Security notice, as provided in the Indenture, of the
redemption not less than 30 days or more than 60 days before the date fixed for
redemption. If the Company elects to redeem fewer than the full principal amount
of this Debt Security, the Trustee will select the amount to be redeemed on a
pro rata basis, by lot or by such other method of random selection, if any, that
the Trustee deems fair and appropriate.

<PAGE>

        Reference is hereby made to the further provisions of this Debt Security
set forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

        Unless the certificate of authentication hereon has been executed by the
Trustee referred to on the reverse hereof by manual signature, this Debt
Security shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.

<PAGE>

IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed.

Dated: January 11, 2005           BERKSHIRE HATHAWAY FINANCE CORPORATION

                                  By: _________________________
                                  Name: Marc D. Hamburg
                                  Title: President

Attest:

_______________________________
Name: Jo Ellen Rieck
Title: Secretary

<PAGE>

                           [REVERSE OF DEBT SECURITY]

        This Debt Security is one of a duly authorized series of notes of the
Company (herein called the "Debt Securities"), issued and to be issued in one or
more series under an Indenture, dated as of December 22, 2003 (herein called the
"Base Indenture", and as supplemented by (i) the Officers' Certificate, dated as
of December 22, 2003, (ii) the Officers' Certificate, dated as of May 7, 2004,
(iii) the Officers' Certificate, dated as of July 19, 2004, (iv) the Officers'
Certificate, dated as of September 20, 2004, (v) the Officer's Certificate,
dated as of October 28, 2004 and (vi) the Officer's Certificate, dated as of
January 11, 2005, together with the Base Indenture, called the "Indenture"),
among the Company, as issuer, Berkshire Hathaway Inc., as guarantor (herein the
"Guarantor" which term includes any successor Guarantor under the Indenture) and
J.P. Morgan Trust Company, National Association, as Trustee (herein called the
"Trustee", which term includes any successor trustee under the Indenture), and
reference is hereby made to the Indenture for a statement of the respective
rights, limitations of rights, duties and immunities thereunder of the Company,
the Guarantor, the Trustee and the Holders of the Debt Securities and of the
terms upon which the Debt Securities are, and are to be, authenticated and
delivered. This Debt Security is one of the series of Debt Securities, which
series consists of the (i) Floating Rate Senior Notes due 2008, (ii) 4.125%
Senior Notes due 2010 and (iii) 4.85% Senior Notes due 2015.

        This Debt Security does not have the benefit of any sinking fund
obligation.

        The Indenture contains provisions for defeasance at any time of the
entire Indebtedness of this Debt Security or of certain restrictive covenants
and Events of Default with respect to this Debt Security, in each case upon
compliance with certain conditions set forth in the Indenture.

        If an Event of Default with respect to the Debt Securities of this
series shall occur and be continuing, the principal of the Debt Securities of
this series may be declared due and payable in the manner and with the effect
provided in the Indenture.

        The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and/or the Guarantor and the rights of the Holders of the Debt
Securities and/or the Guarantees of each series to be affected under the
Indenture at any time by the Company, the Guarantor and the Trustee with the
consent of the Holders of a majority in principal amount of the Debt Securities
at the time Outstanding of each series to be affected. The Indenture also
contains provisions permitting the Holders of specified percentages in principal
amount of the Debt Securities of each series at the time Outstanding, on behalf
of the Holders of all Debt Securities of such series, to waive compliance by the
Company and/or the Guarantor with certain provisions of the Indenture and
certain past defaults under the Indenture and their consequences. Any such
consent or waiver by the Holder of this Debt Security shall be conclusive and
binding upon such Holder and upon all future Holders of this Debt Security and
of any Debt Security issued upon the registration of transfer hereof or in
exchange herefor or in lieu hereof, whether or not notation of such consent or
waiver is made upon this Debt Security.

        As provided in and subject to the provisions of the Indenture, the
Holder of this Debt Security shall not have the right to institute any
proceeding with respect to the Indenture or for the appointment of a receiver or
trustee or for any other remedy thereunder, unless such Holder shall have
previously given the Trustee written notice of a continuing Event of Default
with respect to the Debt Securities of this series, the Holders of not less than
25% in principal amount of the Debt Securities of this series at the time
Outstanding shall have made written request to the

<PAGE>

Trustee to institute proceedings in respect of such Event of Default as Trustee
and offered the Trustee indemnity or security reasonably satisfactory to it, and
the Trustee shall not have received from the Holders of a majority in principal
amount of Debt Securities of this series at the time Outstanding a direction
inconsistent with such request, and shall have failed to institute any such
proceeding, for 60 days after receipt of such notice, request and offer of
indemnity. The foregoing shall not apply to any suit instituted by the Holder of
this Debt Security for the enforcement of any payment of principal hereof or any
premium or interest hereon on or after the respective due dates expressed
herein.

        No reference herein to the Indenture and no provision of this Debt
Security or of the Indenture shall alter or impair the obligation of the
Company, which is absolute and unconditional, to pay the principal of and any
interest on this Debt Security at the times, place and rate, and in the coin or
currency, herein prescribed.

        As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Debt Security is registrable in the Security
Register, upon surrender of this Debt Security for registration of transfer at
the office or agency of the Company in any place where the principal of and any
premium and interest on this Debt Security are payable, duly endorsed by, or
accompanied by a written instrument of transfer in form satisfactory to the
Company and the Security Registrar duly executed by, the Holder hereof or its
attorney duly authorized in writing, and thereupon one or more new Debt
Securities of this series and of like tenor, of authorized denominations and for
the same aggregate principal amount, will be issued to the designated transferee
or transferees.

        The Indenture and this Debt Security are governed by the laws of the
State of New York, without regard to conflicts of laws provisions thereof.

        The Debt Securities of this series are issuable in registered form
without coupons in minimum denominations of $2,000 and integral multiples of
$1,000 in excess thereof. As provided in the Indenture and subject to certain
limitations therein set forth, Debt Securities of this series are exchangeable
for a like aggregate principal amount of Debt Securities of this series and of
like tenor of a different authorized denomination, as requested by the Holder
surrendering the same.

        No service charge shall be made for any such registration of transfer or
exchange, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

        Prior to due presentment of this Debt Security for registration of
transfer, the Company, the Guarantor, the Trustee and any agent thereof may
treat the Person in whose name this Debt Security is registered as the owner
hereof for all purposes, whether or not this Debt Security be overdue, and none
of the Company, the Guarantor, the Trustee or any such agent shall be affected
by notice to the contrary.

        All terms used in this Debt Security which are not defined herein and
are defined in the Indenture shall have the meanings assigned to them in the
Indenture.

<PAGE>

                                  GUARANTEE OF
                             BERKSHIRE HATHAWAY INC.

        FOR VALUE RECEIVED, Berkshire Hathaway Inc., a Delaware corporation (the
"Guarantor"), hereby absolutely, unconditionally and irrevocably guarantees to
the holders (the "Holders") of any security authenticated and delivered (each a
"Security") by J.P. Morgan Trust Company, National Association, as trustee (the
"Trustee") under that certain Indenture, dated as of December 22, 2003 (the
"Indenture"), among the Trustee, the Guarantor and Berkshire Hathaway Finance
Corporation, a Delaware corporation ("Issuer"), the full and prompt payment when
due (whether at stated maturity, by acceleration or otherwise) of all present
and future payment obligations of the Issuer pursuant to the terms of such
Security and/or the Indenture, whether direct or indirect, absolute or
contingent, and whether for principal, interest, fees, expenses, indemnification
or otherwise (collectively, the "Obligations"). Nothing herein shall be deemed
to guarantee any obligation of the Issuer other than the Obligations. Nothing
herein shall be deemed to guarantee any obligation of any person or entity other
than the Issuer.

        The Guarantor's obligations hereunder shall be unconditional and
absolute, and shall not be released, discharged or otherwise affected by (i) the
existence, validity, enforceability, perfection or extent of any collateral
therefor, (ii) any lack of validity or enforceability of any provision of the
Security or the Indenture, (iii) any liquidation, bankruptcy, insolvency,
reorganization or other similar proceeding affecting the Issuer or its assets,
or (iv) any other circumstance relating to the Obligations that might otherwise
constitute a legal or equitable discharge of, or defense to, the Guarantor. The
Guarantor agrees that the Holders and/or the Trustee may resort to the
Guarantor, as primary obligor and not merely as surety, for payment of any of
the Obligations whether or not the Holders or the Trustee shall have proceeded
against the Issuer or any other obligor principally or secondarily obligated
with respect to any of the Obligations. Neither the Holders nor the Trustee
shall be obligated to file any claim relating to any of the Obligations in the
event that the Issuer becomes subject to a bankruptcy, reorganization or similar
proceeding, and the failure of the Holders or the Trustee to so file shall not
affect the Guarantor's obligations hereunder. In the event that any payment to
the Holders by the Issuer in respect of any Obligations is rescinded or must
otherwise be returned for any reason whatsoever, the Guarantor shall remain
liable hereunder with respect to such Obligations as if such payment had not
been made.

        The Guarantor agrees that, subject to the Indenture, the Holders and/or
the Trustee may at any time and from time to time, either before or after the
maturity thereof, without notice to or further consent of the Guarantor, extend
the time of payment of, exchange or surrender any collateral for, or renew any
of the Obligations, and may also make any agreement with the Issuer or with any
other party to or person liable on any of the Obligations or interested therein,
for the extension, renewal, payment, compromise, discharge or release thereof,
in whole or in part, or for any modification of the terms thereof or of any
agreement between the Holders, the Trustee and the Issuer or any such other
party or person, and that none of the foregoing shall in any way impair or
affect this Guarantee. The Guarantor hereby unconditionally and irrevocably
waives, to the fullest extent permitted by law, (a) notice of the acceptance of
this Guarantee and of the Obligations, presentment, demand for payment, notice
of dishonor and protest, (b) any requirement that any Holder exhaust any right
or take any action against the Issuer, and (c) any right to revoke this
Guarantee.

<PAGE>

        The Guarantor agrees to pay on demand all fees and out-of-pocket
expenses incurred by the Holders or the Trustee in any way relating to the
enforcement or protection of the rights of the Holders and/or the Trustee
hereunder.

        Upon payment of any of the Obligations, the Guarantor shall be
subrogated to the rights of the Holders and/or the Trustee against the Issuer
with respect to such Obligations, and the Holders and the Trustee agree to take
such steps, at the Guarantor's expense, as the Guarantor may reasonably request
to implement such subrogation; provided, however, that the Guarantor shall not
be entitled to enforce, or to receive any payments arising out of or based upon,
such right of subrogation during any period in which any amount payable by the
Issuer under the Security or the Indenture is overdue or unpaid.

        No failure on the part of the Holders or the Trustee to exercise, and no
delay in exercising, any right, remedy or power hereunder shall operate as a
waiver thereof, nor shall any single or partial exercise by the Holders or the
Trustee of any right, remedy or power hereunder preclude any other or future
exercise of any right, remedy or power. Each and every right, remedy and power
hereby granted to the Holders or the Trustee or allowed any of them by law or
other agreement shall be cumulative and not exclusive of any other, and may be
exercised by the Holders or the Trustee at any time or from time to time.

        The Guarantor hereby represents and warrants that:

(a) the Guarantor is duly organized, validly existing and in good standing as a
    corporation under the laws of the State of Delaware and has full corporate
    power to execute, deliver and perform this Guarantee;

(b) the execution, delivery and performance of this Guarantee have been and
    remain duly authorized by all necessary corporate action and do not
    contravene any provision of the Guarantor's certificate of incorporation or
    by-laws, as amended to date, or any law, regulation, rule, decree, order,
    judgment or contractual restriction binding on the Guarantor or its assets;

(c) all consents, licenses, clearances, authorizations and approvals of, and
    registrations and declarations with, any governmental authority or
    regulatory body necessary for the due execution, delivery and performance of
    this Guarantee have been obtained and remain in full force and effect and
    all conditions thereof have been duly complied with, and no other action by,
    and no notice to or filing with, any governmental authority or regulatory
    body is required in connection with the execution, delivery or performance
    of this Guarantee;

(d) this Guarantee constitutes a legal, valid and binding obligation of the
    Guarantor enforceable against the Guarantor in accordance with its terms,
    subject to bankruptcy, insolvency, reorganization, moratorium and other laws
    of general applicability relating to or affecting creditors' rights and to
    general equity principles; and

(e) there are no actions, suits or arbitration proceedings pending or, to the
    knowledge of the Guarantor, threatened against it, at law or in equity,
    which, individually or in the aggregate, if adversely determined, would
    materially adversely affect the financial condition of the Guarantor or
    materially impair its ability to perform its obligations under this
    Guarantee.

        The Guarantor may not assign its obligations hereunder to any person
    (except as permitted by the Indenture) without the prior written consent of
    the Holders or the Trustee.

<PAGE>

        All payments by the Guarantor to the Holders or the Trustee shall be
made in accordance with the provisions of the Indenture and the Security;
provided, however, that payment of any fees or expenses pursuant to the fourth
paragraph hereof shall be made by wire transfer of immediately available funds
to an account at a commercial bank in the United States specified to the
Guarantor at least ten (10) days in advance of any demand for payment by the
Holders or the Trustee.

        All notices or demands on the Guarantor shall be deemed effective when
received, shall be in writing and shall be delivered by hand or by registered
mail, or by facsimile transmission promptly confirmed by registered mail,
addressed to the Guarantor at:

               Berkshire Hathaway Inc.
               1440 Kiewit Plaza
               Omaha, NE 68131
               Attention:  Chief Financial Officer
               Facsimile:  (402) 346-3375

or to such other addresses or facsimile numbers as the Guarantor shall have
notified the Holders or the Trustee in a written notice delivered in accordance
with the Indenture.

        This Guarantee shall remain in full force and effect and shall be
binding on the Guarantor, its successors and assigns until all of the
Obligations have been satisfied in full.

        This Guarantee shall be governed by, and construed in accordance with,
the laws of the State of New York applicable to contracts made and to be
performed solely within such State.

        No amendment or waiver of any provision of this Guarantee shall in any
event be effective unless the same shall be in writing and signed by the Trustee
and the Guarantor.

        If for any reason any provision or provisions hereof are determined to
be invalid and contrary to any existing or future law, such invalidity shall
not, to the fullest extent permitted by law, impair the operation of or effect
of those portions of this Guarantee that are valid.

        THE GUARANTOR WAIVES ANY RIGHT IT MAY HAVE TO A JURY TRIAL IN CONNECTION
WITH ANY ACTION, SUIT OR PROCEEDING ARISING OUT OF OR RELATED IN ANY WAY TO THIS
GUARANTEE.

<PAGE>

Dated: January 11, 2005                        BERKSHIRE HATHAWAY INC.

                                               By:________________________
                                                  Name:  Marc D. Hamburg
                                                  Title: Chief Financial Officer

<PAGE>

              SCHEDULE OF INCREASES OR DECREASES IN GLOBAL SECURITY

        The following increases or decreases in this Debt Security have been
made:

<TABLE>
<CAPTION>
                                                 Principal amount
                 Amount of        Amount of        of this Debt        Signature of
                decrease in      increase in         Security           authorized
                 principal        principal       following such       signatory of
    Date of   amount of this    amount of this      decrease or         Trustee or
   exchange    Debt Security    Debt Security        increase       Security Custodian
<S>           <C>               <C>              <C>                <C>

-----------   ---------------   ---------------  -----------------  --------------------
</TABLE>

<PAGE>

                                   ASSIGNMENT

        FOR VALUE RECEIVED, the undersigned assigns and transfers this Debt
Security to:

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
        (Insert assignee's social security or tax identification number)

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------
                    (Insert address and zip code of assignee)

and irrevocably appoints _______ as agent to transfer this Debt Security on the
Security Register. The agent may substitute another to act for him or her.

       Dated:                         Signature:

                                      Signature Guarantee:

  (Sign exactly as your name appears on the other side of this Debt Security)

        Signatures must be guaranteed by an "eligible guarantor institution"
meeting the requirements of the Security Registrar, which requirements include
membership or participation in the Security Transfer Agent Medallion Program
("STAMP") or such other "signature guarantee program" as may be determined by
the Security Registrar in addition to, or in substitution for, STAMP, all in
accordance with the Securities Exchange Act of 1934, as amended.<PAGE>
                                                                     EXHIBIT 4.4

THIS DEBT SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A
NOMINEE THEREOF. THIS DEBT SECURITY MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR
A SECURITY REGISTERED, AND NO TRANSFER OF THIS DEBT SECURITY IN WHOLE OR IN PART
MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITARY OR A
NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO BERKSHIRE HATHAWAY
FINANCE CORPORATION OR ITS AGENT FOR REGISTRATION OR TRANSFER, EXCHANGE, OR
PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR
IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND
ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN
AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR
VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED
OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

THIS DEBT SECURITY HAS NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF
1933, AS AMENDED (THE "SECURITIES ACT"), AND MAY NOT BE SOLD OR OTHERWISE
TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN APPLICABLE EXEMPTION
THEREFROM. EACH PURCHASER OF THE DEBT SECURITY EVIDENCED HEREBY IS NOTIFIED THAT
THE SELLER MAY BE RELYING ON THE EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF
THE SECURITIES ACT PROVIDED BY RULE 144A THEREUNDER.

THIS DEBT SECURITY MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED
EXCEPT (A) (1) TO A PERSON WHO THE TRANSFEROR REASONABLY BELIEVES IS A QUALIFIED
INSTITUTIONAL BUYER WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT
ACQUIRING FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL
BUYER IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A, (2) IN AN OFFSHORE
TRANSACTION COMPLYING WITH RULE 903 OR RULE 904 OF REGULATION S UNDER THE
SECURITIES ACT, (3) PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE
SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER (IF AVAILABLE) OR (4) PURSUANT TO
AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT, AND (B) IN
ACCORDANCE WITH ALL APPLICABLE SECURITIES LAWS OF THE STATES OF THE UNITED
STATES AND OTHER JURISDICTIONS.

THIS DEBT SECURITY AND ANY RELATED DOCUMENTATION MAY BE AMENDED OR SUPPLEMENTED
FROM TIME TO TIME TO MODIFY THE RESTRICTIONS ON RESALES AND OTHER TRANSFERS OF
THIS DEBT SECURITY TO REFLECT ANY CHANGE IN APPLICABLE LAW OR REGULATION (OR THE
INTERPRETATION THEREOF) OR IN PRACTICES RELATING TO THE RESALE OR TRANSFER OF
RESTRICTED SECURITIES GENERALLY. THE HOLDER OF THIS DEBT SECURITY SHALL BE
DEEMED BY THE ACCEPTANCE HEREOF TO HAVE AGREED TO ANY SUCH AMENDMENT OR
SUPPLEMENT.

<PAGE>

                     BERKSHIRE HATHAWAY FINANCE CORPORATION

                 -----------------------------------------------

                       FLOATING RATE SENIOR NOTES DUE 2008

                                                              CUSIP: 084664 AN 1
                                                              ISIN: US084664AN12

NO.                                                              $______________
                                        (as revised by the Schedule of Increases
                               and Decreases in Global Security attached hereto)

        BERKSHIRE HATHAWAY FINANCE CORPORATION, a corporation duly organized and
existing under the laws of the State of Delaware (herein called the "Company",
which term includes any successor Person under the Indenture hereinafter
referred to), for value received, hereby promises to pay to CEDE & CO., the
registered Holder hereof, the principal sum of             ($         ) (as
revised by the Schedule of Increases and Decreases in Global Security attached
hereto) on January 11, 2008 (the "Stated Maturity Date), and to pay interest
thereon in arrears at a rate per annum equal to 2.66% (the "Initial Interest
Rate") from, and including, January 11, 2005 to, but excluding, April 11, 2005
and thereafter, except as specified herein, at a rate per annum equal to LIBOR
(as determined on each Interest Determination Date in accordance with the
provisions below under the heading "Determination of LIBOR") plus 0.05% (the
"Interest Rate") until the principal hereof is paid or made available for
payment; provided that any principal, and any such installment of interest,
which is overdue shall bear interest at the Interest Rate (as it shall be
adjusted on each Interest Payment Date and to the extent that the payment of
such interest shall be legally enforceable), from the dates such amounts are due
until they are paid or made available for payment, and such interest shall be
payable on demand. The Company will make payments of such interest quarterly in
arrears on January 11, April 11, July 11 and October 11 of each year (each, an
"Interest Payment Date"), commencing on April 11, 2005, and on the Stated
Maturity Date; provided, however, that if an Interest Payment Date other than
the Stated Maturity Date would fall on a day that is not a Business Day (as
defined below), such Interest Payment Date shall be postponed to the next
Business Day with the same force and effect as if made on such Interest Payment
Date (and without any interest or other payment in respect of such delay),
except if such next Business Day falls in the next calendar month, in which case
such Interest Payment Date shall be the immediately preceding Business Day;
provided, further, that if the Stated Maturity Date falls on a day that is not a
Business Day, payment of principal, premium, if any, and/or interest to be made
on the Stated Maturity Date shall be made on the next Business Day with the same
force and effect as if made on the Stated Maturity Date (without any interest or
other payment in respect of such delay). For purposes of this Note, "Business
Day" means any day, other than a Saturday or Sunday, that is not a day on which
banking institutions in the Borough of Manhattan, City of New York are
authorized or required by law, regulation or executive order to close; and
provided, further, the day must also be a London Business Day. "London Business
Day" means any day on which dealings in deposits in U.S. Dollars are transacted
in the London interbank market. The interest so payable, and punctually paid or
duly provided for, on any Interest Payment Date will, as provided in such
Indenture, be paid to the Person in whose name this Debt Security (or one or
more Predecessor Securities) is registered at the close of business on each
respective January 1, April 1, July 1 or October 1 immediately preceding such
Interest Payment Date, whether or not a Business Day (each such date being
referred to herein as a "Regular Record Date"). Any such interest not so
punctually paid or duly provided for will forthwith cease to be payable to the
Holder on such Regular Record Date and may either be paid to the Person in whose
name this Debt Security (or one or more Predecessor Securities) is registered at
the close of business on a Special Record Date for the payment of such

<PAGE>

Defaulted Interest to be fixed by the Trustee, notice whereof shall be
given to Holders of Debt Securities of this series not less than 10 days prior
to such Special Record Date, or be paid at any time in any other lawful manner
not inconsistent with the requirements of any securities exchange on which the
Debt Securities of this series may be listed, and upon such notice as may be
required by such exchange, all as more fully provided in such Indenture

        Payment of the principal of and interest on this Debt Security will be
made at the office or agency of the Company maintained for that purpose in the
City of New York, New York (or, if the Company does not maintain such office or
agency, at the corporate trust office of the Trustee in the City of New York or
if the Trustee does not maintain an office in the City of New York, at the
office of a Paying Agent in the City of New York), in such coin or currency of
the United States of America as at the time of payment is legal tender for
payment of public and private debt; provided, however, that at the option of the
Company payments of principal or interest may be made by check mailed to the
address of the Person entitled thereto as such address shall appear in the
Security Register.

        The interest payable hereon on each Interest Payment Date or the Stated
Maturity Date, as the case may be, will include interest accrued from, and
including, the most recent Interest Payment Date to which interest has been paid
or duly provided for, or, if no interest has been paid or duly provided for,
from and including January 11, 2005, as the case may be, to, but excluding, such
Interest Payment Date or the Stated Maturity Date, as the case may be (each, an
"Interest Period"). Accrued interest on this Debt Security will be calculated by
multiplying the outstanding principal amount hereof by an accrued interest
factor. Such accrued interest factor will be computed by adding the interest
factors calculated for each day in the Interest Period for which accrued
interest is being paid. The interest factor for each such day is computed by
dividing the Interest Rate applicable to such day by 360. The Interest Rate in
effect on any Interest Payment Date will be the Interest Rate as reset in
accordance herewith on that date. The Interest Rate applicable to any other day
is the Interest Rate as reset on the immediately preceding Interest Payment
Date, or if none, the Initial Interest Rate.

        This Note will bear interest at the Interest Rate (i.e. LIBOR plus
0.05%) by reference to LIBOR determined in accordance with the provisions set
forth below. Commencing with April 11, 2005 and thereafter on each succeeding
Interest Payment Date specified above, the rate at which interest on this Note
is payable shall be reset as of each such Interest Payment Date; provided,
however, that the Interest Rate in effect for the period from, and including,
January 11, 2005 to, but excluding, April 11, 2005 (i.e. the first Interest
Payment Date) will be the Initial Interest Rate.

        Except as set forth in the immediately preceding paragraph, the Interest
Rate applicable to an Interest Period commencing on any Interest Payment Date
will be determined by reference to LIBOR (determined in accordance with the
provisions set forth below) as of the particular "Interest Determination Date"
for such period, which will be the second London Business Day preceding the
related Interest Payment Date commencing such Interest Period. Notwithstanding
the foregoing, the Interest Rate hereon shall in no event be higher than the
maximum rate permitted by New York law as the same may be modified by United
States law of general application.

        Subject to applicable provisions of law and except as specified herein,
the Calculation Agent will, as of each applicable Interest Determination Date,
calculate the Interest Rate payable during each applicable Interest Period in
accordance with the provisions specified below.

        Unless otherwise specified, all percentages resulting from any
calculation of the rate of interest on this Note will be rounded, if necessary,
to the nearest one hundred-thousandth of a percentage point, (with .000005%
rounded up to .00001%), and all U.S. dollar amounts used in or resulting from
such calculation on this Note will be rounded to the nearest cent (with one-half
cent rounded upward).

<PAGE>

        Determination of LIBOR. "LIBOR" as of each Interest Determination Date
for each applicable Interest Period will be: (i) the rate for deposits in U.S.
Dollars for a period of three months, commencing on the related Interest Payment
Date commencing the applicable Interest Period, that appears on Page 3750, or
any successor page, on Moneyline Telerate Inc., or any successor service, at
approximately 11:00 a.m., London time, on the applicable Interest Determination
Date or (ii) if no such rate appears, then the calculation agent will request
the principal London offices of each of four major reference banks in the London
interbank market, as selected by the Calculation Agent after consultation with
Berkshire Hathaway Inc., to provide the Calculation Agent with its offered
quotation for deposits in U.S. dollars for a period of three months, commencing
on the related Interest Payment Date commencing the applicable Interest Period,
to prime banks in the London interbank market at approximately 11:00 a.m.,
London time, on that Interest Determination Date and in a principal amount that
is representative of a single transaction in U.S. dollars in that market at that
time (the quotations referred to in this clause (ii) shall be referred to as
"Offered Quotations"). If at least two Offered Quotations are provided as
requested, LIBOR determined by the Calculation Agent on that Interest
Determination Date will be the arithmetic mean of those quotations. If fewer
than two Offered Quotations are provided as requested, LIBOR determined by the
Calculation Agent on that Interest Determination Date will be the arithmetic
mean of the rates quoted at approximately 11:00 a.m., New York time, on that
Interest Determination Date, by three major banks in New York City, as selected
by the Calculation Agent after consultation with Berkshire Hathaway Inc. for
loans in U.S. dollars to leading European banks, for a period of three months,
commencing on the related Interest Payment Date commencing the applicable
Interest Period, and in a principal amount that is representative of a single
transaction in U.S. dollars in that market at that time. If the banks so
selected by the Calculation Agent are not quoting as set forth above, LIBOR for
the Interest Period to which that Interest Determination Date relates will
remain LIBOR for the immediately preceding Interest Period, or, if there was no
preceding Interest Period, the rate of interest payable will be the Initial
Interest Rate.

        J.P. Morgan Trust Company, National Association will be the Calculation
Agent.

        Reference is hereby made to the further provisions of this Debt Security
set forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

        Unless the certificate of authentication hereon has been executed by the
Trustee referred to on the reverse hereof by manual signature, this Debt
Security shall not be entitled to any benefit under the Indenture or be valid or
obligatory for any purpose.

<PAGE>

IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed.

Dated: January 11, 2005                   BERKSHIRE HATHAWAY FINANCE CORPORATION

                                          By: _________________________
                                          Name: Marc D. Hamburg
                                          Title: President

Attest:

_______________________________
Name: Jo Ellen Rieck
Title: Secretary

<PAGE>

                           [REVERSE OF DEBT SECURITY]

        This Debt Security is one of a duly authorized series of notes of the
Company (herein called the "Debt Securities"), issued and to be issued in one or
more series under an Indenture, dated as of December 22, 2003 (herein called the
"Base Indenture", and as supplemented by (i) the Officers' Certificate, dated as
of December 22, 2003, (ii) the Officers' Certificate, dated as of May 7, 2004,
(iii) the Officers' Certificate, dated as of July 19, 2004, (iv) the Officers'
Certificate, dated as of September 20, 2004, (v) the Officer's Certificate,
dated as of October 28, 2004 and (vi) the Officer's Certificate, dated as of
January 11, 2005, together with the Base Indenture, called the "Indenture"),
among the Company, as issuer, Berkshire Hathaway Inc., as guarantor (herein the
"Guarantor" which term includes any successor Guarantor under the Indenture) and
J.P. Morgan Trust Company, National Association, as Trustee (herein called the
"Trustee", which term includes any successor trustee under the Indenture), and
reference is hereby made to the Indenture for a statement of the respective
rights, limitations of rights, duties and immunities thereunder of the Company,
the Guarantor, the Trustee and the Holders of the Debt Securities and of the
terms upon which the Debt Securities are, and are to be, authenticated and
delivered. This Debt Security is one of the series of Debt Securities, which
series consists of the (i) Floating Rate Senior Notes due 2008, (ii) 4.125%
Senior Notes due 2010 and (iii) 4.85% Senior Notes due 2015.

        This Debt Security does not have the benefit of any sinking fund
obligation.

        The Indenture contains provisions for defeasance at any time of the
entire Indebtedness of this Debt Security or of certain restrictive covenants
and Events of Default with respect to this Debt Security, in each case upon
compliance with certain conditions set forth in the Indenture.

        If an Event of Default with respect to the Debt Securities of this
series shall occur and be continuing, the principal of the Debt Securities of
this series may be declared due and payable in the manner and with the effect
provided in the Indenture.

        The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and/or the Guarantor and the rights of the Holders of the Debt
Securities and/or the Guarantees of each series to be affected under the
Indenture at any time by the Company, the Guarantor and the Trustee with the
consent of the Holders of a majority in principal amount of the Debt Securities
at the time Outstanding of each series to be affected. The Indenture also
contains provisions permitting the Holders of specified percentages in principal
amount of the Debt Securities of each series at the time Outstanding, on behalf
of the Holders of all Debt Securities of such series, to waive compliance by the
Company and/or the Guarantor with certain provisions of the Indenture and
certain past defaults under the Indenture and their consequences. Any such
consent or waiver by the Holder of this Debt Security shall be conclusive and
binding upon such Holder and upon all future Holders of this Debt Security and
of any Debt Security issued upon the registration of transfer hereof or in
exchange herefor or in lieu hereof, whether or not notation of such consent or
waiver is made upon this Debt Security.

        As provided in and subject to the provisions of the Indenture, the
Holder of this Debt Security shall not have the right to institute any
proceeding with respect to the Indenture or for the appointment of a receiver or
trustee or for any other remedy thereunder, unless such Holder shall have
previously given the Trustee written notice of a continuing Event of Default
with

<PAGE>

respect to the Debt Securities of this series, the Holders of not less than 25%
in principal amount of the Debt Securities of this series at the time
Outstanding shall have made written request to the Trustee to institute
proceedings in respect of such Event of Default as Trustee and offered the
Trustee indemnity or security reasonably satisfactory to it, and the Trustee
shall not have received from the Holders of a majority in principal amount of
Debt Securities of this series at the time Outstanding a direction inconsistent
with such request, and shall have failed to institute any such proceeding, for
60 days after receipt of such notice, request and offer of indemnity. The
foregoing shall not apply to any suit instituted by the Holder of this Debt
Security for the enforcement of any payment of principal hereof or any premium
or interest hereon on or after the respective due dates expressed herein.

        No reference herein to the Indenture and no provision of this Debt
Security or of the Indenture shall alter or impair the obligation of the
Company, which is absolute and unconditional, to pay the principal of and any
interest on this Debt Security at the times, place and rate, and in the coin or
currency, herein prescribed.

        As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Debt Security is registrable in the Security
Register, upon surrender of this Debt Security for registration of transfer at
the office or agency of the Company in any place where the principal of and any
premium and interest on this Debt Security are payable, duly endorsed by, or
accompanied by a written instrument of transfer in form satisfactory to the
Company and the Security Registrar duly executed by, the Holder hereof or its
attorney duly authorized in writing, and thereupon one or more new Debt
Securities of this series and of like tenor, of authorized denominations and for
the same aggregate principal amount, will be issued to the designated transferee
or transferees.

        The Indenture and this Debt Security are governed by the laws of the
State of New York, without regard to conflicts of laws provisions thereof.

        The Debt Securities of this series are issuable in registered form
without coupons in minimum denominations of $2,000 and integral multiples of
$1,000 in excess thereof. As provided in the Indenture and subject to certain
limitations therein set forth, Debt Securities of this series are exchangeable
for a like aggregate principal amount of Debt Securities of this series and of
like tenor of a different authorized denomination, as requested by the Holder
surrendering the same.

        No service charge shall be made for any such registration of transfer or
exchange, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

        Prior to due presentment of this Debt Security for registration of
transfer, the Company, the Guarantor, the Trustee and any agent thereof may
treat the Person in whose name this Debt Security is registered as the owner
hereof for all purposes, whether or not this Debt Security be overdue, and none
of the Company, the Guarantor, the Trustee or any such agent shall be affected
by notice to the contrary.

        All terms used in this Debt Security which are not defined herein and
are defined in the Indenture shall have the meanings assigned to them in the
Indenture.

<PAGE>

                                  GUARANTEE OF
                             BERKSHIRE HATHAWAY INC.

        FOR VALUE RECEIVED, Berkshire Hathaway Inc., a Delaware corporation (the
"Guarantor"), hereby absolutely, unconditionally and irrevocably guarantees to
the holders (the "Holders") of any security authenticated and delivered (each a
"Security") by J.P. Morgan Trust Company, National Association, as trustee (the
"Trustee") under that certain Indenture, dated as of December 22, 2003 (the
"Indenture"), among the Trustee, the Guarantor and Berkshire Hathaway Finance
Corporation, a Delaware corporation ("Issuer"), the full and prompt payment when
due (whether at stated maturity, by acceleration or otherwise) of all present
and future payment obligations of the Issuer pursuant to the terms of such
Security and/or the Indenture, whether direct or indirect, absolute or
contingent, and whether for principal, interest, fees, expenses, indemnification
or otherwise (collectively, the "Obligations"). Nothing herein shall be deemed
to guarantee any obligation of the Issuer other than the Obligations. Nothing
herein shall be deemed to guarantee any obligation of any person or entity other
than the Issuer.

        The Guarantor's obligations hereunder shall be unconditional and
absolute, and shall not be released, discharged or otherwise affected by (i) the
existence, validity, enforceability, perfection or extent of any collateral
therefor, (ii) any lack of validity or enforceability of any provision of the
Security or the Indenture, (iii) any liquidation, bankruptcy, insolvency,
reorganization or other similar proceeding affecting the Issuer or its assets,
or (iv) any other circumstance relating to the Obligations that might otherwise
constitute a legal or equitable discharge of, or defense to, the Guarantor. The
Guarantor agrees that the Holders and/or the Trustee may resort to the
Guarantor, as primary obligor and not merely as surety, for payment of any of
the Obligations whether or not the Holders or the Trustee shall have proceeded
against the Issuer or any other obligor principally or secondarily obligated
with respect to any of the Obligations. Neither the Holders nor the Trustee
shall be obligated to file any claim relating to any of the Obligations in the
event that the Issuer becomes subject to a bankruptcy, reorganization or similar
proceeding, and the failure of the Holders or the Trustee to so file shall not
affect the Guarantor's obligations hereunder. In the event that any payment to
the Holders by the Issuer in respect of any Obligations is rescinded or must
otherwise be returned for any reason whatsoever, the Guarantor shall remain
liable hereunder with respect to such Obligations as if such payment had not
been made.

        The Guarantor agrees that, subject to the Indenture, the Holders and/or
the Trustee may at any time and from time to time, either before or after the
maturity thereof, without notice to or further consent of the Guarantor, extend
the time of payment of, exchange or surrender any collateral for, or renew any
of the Obligations, and may also make any agreement with the Issuer or with any
other party to or person liable on any of the Obligations or interested therein,
for the extension, renewal, payment, compromise, discharge or release thereof,
in whole or in part, or for any modification of the terms thereof or of any
agreement between the Holders, the Trustee and the Issuer or any such other
party or person, and that none of the foregoing shall in any way impair or
affect this Guarantee. The Guarantor hereby unconditionally and irrevocably
waives, to the fullest extent permitted by law, (a) notice of the acceptance of
this Guarantee and of the Obligations, presentment, demand for payment, notice
of dishonor and protest, (b) any requirement that any Holder exhaust any right
or take any action against the Issuer, and (c) any right to revoke this
Guarantee.

        The Guarantor agrees to pay on demand all fees and out-of-pocket
expenses incurred by the Holders or the Trustee in any way relating to the
enforcement or protection of the rights of the Holders and/or the Trustee
hereunder.

<PAGE>

        Upon payment of any of the Obligations, the Guarantor shall be
subrogated to the rights of the Holders and/or the Trustee against the Issuer
with respect to such Obligations, and the Holders and the Trustee agree to take
such steps, at the Guarantor's expense, as the Guarantor may reasonably request
to implement such subrogation; provided, however, that the Guarantor shall not
be entitled to enforce, or to receive any payments arising out of or based upon,
such right of subrogation during any period in which any amount payable by the
Issuer under the Security or the Indenture is overdue or unpaid.

        No failure on the part of the Holders or the Trustee to exercise, and no
delay in exercising, any right, remedy or power hereunder shall operate as a
waiver thereof, nor shall any single or partial exercise by the Holders or the
Trustee of any right, remedy or power hereunder preclude any other or future
exercise of any right, remedy or power. Each and every right, remedy and power
hereby granted to the Holders or the Trustee or allowed any of them by law or
other agreement shall be cumulative and not exclusive of any other, and may be
exercised by the Holders or the Trustee at any time or from time to time.

        The Guarantor hereby represents and warrants that:

(a) the Guarantor is duly organized, validly existing and in good standing as a
corporation under the laws of the State of Delaware and has full corporate power
to execute, deliver and perform this Guarantee;

(b) the execution, delivery and performance of this Guarantee have been and
remain duly authorized by all necessary corporate action and do not contravene
any provision of the Guarantor's certificate of incorporation or by-laws, as
amended to date, or any law, regulation, rule, decree, order, judgment or
contractual restriction binding on the Guarantor or its assets;

(c) all consents, licenses, clearances, authorizations and approvals of, and
registrations and declarations with, any governmental authority or regulatory
body necessary for the due execution, delivery and performance of this Guarantee
have been obtained and remain in full force and effect and all conditions
thereof have been duly complied with, and no other action by, and no notice to
or filing with, any governmental authority or regulatory body is required in
connection with the execution, delivery or performance of this Guarantee;

(d) this Guarantee constitutes a legal, valid and binding obligation of the
Guarantor enforceable against the Guarantor in accordance with its terms,
subject to bankruptcy, insolvency, reorganization, moratorium and other laws of
general applicability relating to or affecting creditors' rights and to general
equity principles; and

(e) there are no actions, suits or arbitration proceedings pending or, to the
knowledge of the Guarantor, threatened against it, at law or in equity, which,
individually or in the aggregate, if adversely determined, would materially
adversely affect the financial condition of the Guarantor or materially impair
its ability to perform its obligations under this Guarantee.

        The Guarantor may not assign its obligations hereunder to any person
(except as permitted by the Indenture) without the prior written consent of the
Holders or the Trustee.

        All payments by the Guarantor to the Holders or the Trustee shall be
made in accordance with the provisions of the Indenture and the Security;
provided, however, that payment of any fees or expenses pursuant to the fourth
paragraph hereof shall be made by wire transfer of immediately available funds
to an account at a commercial bank in the United States specified to

<PAGE>

the Guarantor at least ten (10) days in advance of any demand for payment by the
Holders or the Trustee.

        All notices or demands on the Guarantor shall be deemed effective when
received, shall be in writing and shall be delivered by hand or by registered
mail, or by facsimile transmission promptly confirmed by registered mail,
addressed to the Guarantor at:

               Berkshire Hathaway Inc.
               1440 Kiewit Plaza
               Omaha, NE 68131
               Attention:  Chief Financial Officer
               Facsimile:  (402) 346-3375

or to such other addresses or facsimile numbers as the Guarantor shall have
notified the Holders or the Trustee in a written notice delivered in accordance
with the Indenture.

        This Guarantee shall remain in full force and effect and shall be
binding on the Guarantor, its successors and assigns until all of the
Obligations have been satisfied in full.

        This Guarantee shall be governed by, and construed in accordance with,
the laws of the State of New York applicable to contracts made and to be
performed solely within such State.

        No amendment or waiver of any provision of this Guarantee shall in any
event be effective unless the same shall be in writing and signed by the Trustee
and the Guarantor.

        If for any reason any provision or provisions hereof are determined to
be invalid and contrary to any existing or future law, such invalidity shall
not, to the fullest extent permitted by law, impair the operation of or effect
of those portions of this Guarantee that are valid.

        THE GUARANTOR WAIVES ANY RIGHT IT MAY HAVE TO A JURY TRIAL IN CONNECTION
WITH ANY ACTION, SUIT OR PROCEEDING ARISING OUT OF OR RELATED IN ANY WAY TO THIS
GUARANTEE.

<PAGE>

Dated: January 11, 2005                        BERKSHIRE HATHAWAY INC.

                                               By:________________________
                                                  Name:  Marc D. Hamburg
                                                  Title: Chief Financial Officer

<PAGE>

                    SCHEDULE OF INCREASES OR DECREASES IN GLOBAL SECURITY

        The following increases or decreases in this Debt Security have been
made:

<TABLE>
<CAPTION>
                                                 Principal amount
                 Amount of        Amount of        of this Debt        Signature of
                decrease in      increase in         Security           authorized
                 principal        principal       following such       signatory of
    Date of   amount of this    amount of this      decrease or         Trustee or
   exchange    Debt Security    Debt Security        increase       Security Custodian
<S>           <C>               <C>              <C>                <C>

-----------   ---------------   --------------   ----------------   ------------------
</TABLE>

<PAGE>

                                   ASSIGNMENT

        FOR VALUE RECEIVED, the undersigned assigns and transfers this Debt
Security to:

    ----------------------------------------------------------------------------

    ----------------------------------------------------------------------------
        (Insert assignee's social security or tax identification number)

    ----------------------------------------------------------------------------

    ----------------------------------------------------------------------------

    ----------------------------------------------------------------------------
                    (Insert address and zip code of assignee)

and irrevocably appoints _______ as agent to transfer this Debt Security on the
Security Register. The agent may substitute another to act for him or her.

        Dated:                            Signature:

                                          Signature Guarantee:

   (Sign exactly as your name appears on the other side of this Debt Security)

        Signatures must be guaranteed by an "eligible guarantor institution"
meeting the requirements of the Security Registrar, which requirements include
membership or participation in the Security Transfer Agent Medallion Program
("STAMP") or such other "signature guarantee program" as may be determined by
the Security Registrar in addition to, or in substitution for, STAMP, all in
accordance with the Securities Exchange Act of 1934, as amended.

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