Document:

Form of Floating Rate Senior Note

 EXHIBIT 4.3 
 Floating Rate Senior Notes due 2012 
 CERTIFICATE OF
AUTHENTICATION 
 This is one of the Securities of the series designated therein referred to in the within-mentioned Indenture. 
  

			
	 THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
 as Trustee,

		
	By:	 	 
		 	Name:
		 	Title:

 Dated: January 13, 2010 

 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. 

 BERKSHIRE HATHAWAY FINANCE CORPORATION 
 ************************** 
 Floating Rate Senior Notes due 2012 
 CUSIP: 084664BM2 
 ISIN: US084664BM20 
  

				
	 No. 1
	  	$	250,000,000
	 (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 Two-Hundred Fifty Million Dollars ($250,000,000) (as revised by the Schedule of Increases and Decreases in Global Security attached hereto) on January 13, 2012 (the “Stated Maturity Date”),
and to pay interest thereon in arrears at a rate per annum equal to 0.376% (the “Initial Interest Rate”) from, and including, January 13, 2010, to, but excluding, April 13, 2010, 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 0.125% (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 13, April 13, July 13 and October 13 of each year (each, an “Interest Payment Date”), commencing on April 13, 2010, 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 will be postponed to the next Business Day and interest will accrue to but excluding
the date interest is paid. However, if the postponement would cause the day to fall in the next calendar month, 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, Sunday or other day that, in New York City, banking institutions generally are authorized
or obligated by law 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 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 13, 2010, 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 0.125%) by reference to LIBOR
determined in accordance with the provisions set forth below. Commencing with April 13, 2010 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 13, 2010 to, but excluding, April 13, 2010 (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) 
 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 applicable Interest Payment Date, that appears on the Reuters Screen LIBOR01 Page, 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. 
 The Bank of New York Mellon Trust Company, N.A. 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. 

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

 

									
	Dated: January 13, 2010	 		 	BERKSHIRE HATHAWAY FINANCE CORPORATION
					
		 		 		 	By:	 	 
		 		 		 		 	Name: Marc D. Hamburg
		 		 		 		 	Title: President
			
	Attest:	 		 	
				
	 	 		 		 	
	 Name: Daniel J. Jaksich
	 		 		 	
	 Title: Assistant Secretary
	 		 		 	

 [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 the Officers’ Certificate dated January 6, 2010 (the “Officers’ Certificate”), 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 The Bank of New York Mellon Trust Company, N.A., as
successor to 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. 
 In accordance with resolutions attached to the Officers’ Certificate, the following paragraph shall replace
Section 501(5) of the Base Indenture for all purposes relating to the Debt Securities: 
 (5) a default
under any bond, debenture, note or other evidence of Indebtedness for money borrowed by the Company, the Guarantor or any Consolidated Subsidiary (including a default with respect to Securities of any series other than that series) having an
aggregate principal amount outstanding of at least $1,000,000,000, or under any mortgage, indenture or instrument (including this Indenture or any Guarantee) under which there may be issued or by which there may be secured or evidenced any
Indebtedness for money borrowed by the Company, the Guarantor or any Consolidated Subsidiary having an aggregate principal amount outstanding of at least $1,000,000,000, whether such Indebtedness now exists or shall hereafter be created, which
default (A) shall constitute a failure to pay any portion of the principal of such Indebtedness when due and payable after the expiration of any applicable grace period with respect thereto or (B) shall have resulted in such Indebtedness
becoming or being declared due and payable prior to the date on which it would otherwise have become due and payable, without, in the case of Clause (A), such Indebtedness having been discharged or without, in the case of Clause (B), such
Indebtedness having been discharged or such acceleration having been rescinded or annulled, in each such case within a period of 15 days after there shall have been given, by registered or certified mail, to the Company and the Guarantor by the
Trustee or to the Company, the Guarantor and the Trustee by the Holders of at least 25% in principal amount of the Outstanding Securities of that series a written notice specifying such default and requiring the Company or the Guarantor, as the case
may be, to cause such Indebtedness to be discharged or cause such acceleration to be rescinded or annulled, as the case may be, and stating that such notice is a “Notice of Default” hereunder; or 
 This Debt Security does not have the benefit of any sinking fund obligation. 
 This Debt Security is not redeemable prior to the Stated Maturity Date. 
 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 51% 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 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. 

 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 The Bank of New York Mellon Trust Company, N.A., as successor to 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. 

 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 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. 
 3555 Farnam Street 
 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. 

									
	Dated: January 13, 2010	 		 	BERKSHIRE HATHAWAY INC.
					
		 		 		 	By:	 	 
		 		 		 		 	Name: Marc D. Hamburg
		 		 		 		 	Title: Chief Financial Officer

 SCHEDULE OF INCREASES OR DECREASES IN GLOBAL SECURITY 
  
 The following increases or decreases in this Debt Security have been
made: 
  

									
	 Date of exchange
	 	 Amount of decrease in
principal amount of this
Debt
Security
	 	 Amount of increase in
principal amount of this
Debt
Security
	 	 Principal amount of this Debt
Security following
such
decrease or increase
	 	 Signature of authorized
signatory of Trustee
or
Security Custodian

 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.Employment Letter - Jon Cohen

 Exhibit 10.1 
 

 
 27 OCTOBER 2009 
 JON COHEN 
 537 LENAPE CIRCLE

 LANGHORNE, PA 19047 
 DEAR JON, 
 WE ARE PLEASED TO
PRESENT THE FOLLOWING OFFER OF EMPLOYMENT. THIS LETTER WILL SUMMARIZE AND
CONFIRM THE DETAILS OF OUR OFFER TO YOU OF EMPLOYMENT BY LIGHTING
SCIENCE GROUP CORPORATION (THE “COMPANY”). 
 START DATE. YOUR EMPLOYMENT BY THE COMPANY WILL COMMENCE ON
02 NOVEMBER 2009 AND THE CONTRACTOR SERVICES AGREEMENT BETWEEN YOU AND THE
COMPANY EFFECTIVE AS OF 31 AUGUST 2009 SHALL BE DEEMED TO BE TERMINATED
AS OF 31 OCTOBER 2009. 
 POSITION,
RESPONSIBILITIES & DUTIES. YOUR INITIAL TITLE WILL BE VICE PRESIDENT &
CHIEF ACCOUNTING OFFICER. YOU WILL INITIALLY REPORT TO KATY REYNOLDS, SENIOR
VICE PRESIDENT, STRATEGY & FINANCE. YOUR RESPONSIBILITIES AND DUTIES WILL BE
AS THE COMPANY MAY SPECIFY. YOU ARE EXPECTED TO DEVOTE YOUR FULL
TIME PROFESSIONAL EFFORTS TO THE FULFILLMENT OF YOUR RESPONSIBILITIES AND DUTIES.

 BASE COMPENSATION. YOUR ANNUAL
SALARY WILL BE ONE HUNDRED SIXTY FIVE THOUSAND UNITED STATES DOLLARS
(US$165,000.00), LESS STANDARD PAYROLL DEDUCTIONS AND ALL REQUIRED WITHHOLDINGS, AND PAID
IN ACCORDANCE WITH THE COMPANY’S PAYROLL POLICIES. 
 RELOCATION PAYMENT. YOU WILL BE
ELIGIBLE TO RECEIVE A RELOCATION BONUS OF THIRTY THOUSAND UNITED STATES
DOLLARS (US$30,000.00) LESS REQUIRED WITHHOLDINGS, AT THE TIME OF RELOCATION. IF YOU
VOLUNTARILY TERMINATE YOUR EMPLOYMENT WITH THE COMPANY OR ARE TERMINATED FOR
CAUSE WITHIN TWO YEARS OF YOUR DATE OF HIRE, YOU WILL BE
REQUIRED TO REIMBURSE THE COMPANY FOR ONE HUNDRED PERCENT (100%) OF THE
RELOCATION BONUS. 
 

 

 PERFORMANCE BONUS.
BEGINNING WITH THE CALENDAR YEAR 2010, YOU WILL BE ELIGIBLE TO PARTICIPATE
IN THE COMPANY’S PERFORMANCE BONUS PLAN(S) UP TO THIRTY PERCENT
(30%) OF YOUR BASE SALARY, BASED ON A COMBINATION OF COMPANY PERFORMANCE
AND PERSONAL ACHIEVEMENTS AS DETERMINED BY YOUR MANAGER. 
 LONG TERM INCENTIVE PLAN. YOU
WILL BE ELIGIBLE TO PARTICIPATE IN THE COMPANY’S LONG TERM
INCENTIVE PLANS FOR EXECUTIVES. 
 INITIAL
STOCK & OPTION GRANTS. AS PART OF THE COMPANY’S LONG
TERM INCENTIVE PLAN, YOU HAVE BEEN ISSUED ONE HUNDRED THOUSAND (100,000) STOCK
OPTIONS SUBJECT TO THE LIGHTING SCIENCE GROUP CORPORATION AMENDED AND RESTATED
EQUITY-BASED COMPENSATION PLAN NONQUALIFIED STOCK OPTION AGREEMENT. 
 BENEFITS. THE COMPANY CURRENTLY OFFERS
A SUITE OF BENEFITS FOR YOU AND YOUR QUALIFIED DEPENDENTS INCLUDING
MEDICAL, DENTAL, VISION AND LIFE INSURANCE OPTIONS, EFFECTIVE FIRST DAY OF
EMPLOYMENT. ADDITIONALLY, YOU ARE ELIGIBLE FOR PAID SICK TIME OFF AND
PAID HOLIDAYS. YOU WILL INITIALLY BE ELIGIBLE FOR TWENTY (20) DAYS OF
PAID VACATION PER YEAR OF EMPLOYMENT. ADDITIONAL DETAILS REGARDING BENEFITS WILL
BE PROVIDED BY THE COMPANY’S HUMAN RESOURCES DEPARTMENT IN DUE
COURSE. BENEFITS SHALL CEASE IMMEDIATELY UPON THE TERMINATION OF YOUR EMPLOYMENT
BY THE COMPANY EXCEPT AS PROVIDED BY LAW OR AS THE
COMPANY’S POLICIES MAY ALLOW. 
 REQUIRED DOCUMENTATION. TO COMPLY WITH THE GOVERNMENT-MANDATED CONFIRMATION
OF EMPLOYMENT ELIGIBILITY, YOU WILL BE REQUIRED TO COMPLETE AN I-9 EMPLOYMENT
ELIGIBILITY VERIFICATION FORM. 
 AT WILL
EMPLOYMENT. PLEASE UNDERSTAND THE COMPANY IS AN EMPLOYMENT-AT-WILL
COMPANY. THIS MEANS THAT YOU OR THE COMPANY MAY TERMINATE YOUR
EMPLOYMENT AT ANY TIME, FOR ANY REASON OR FOR NO REASON, WITH
OR WITHOUT NOTICE. ACCORDINGLY, THIS LETTER IS NOT A CONTRACT OR
COMMITMENT FOR CONTINUED EMPLOYMENT. THE COMPANY ALSO RESERVES THE RIGHT TO
AMEND ITS BENEFITS, PLANS OR PROGRAMS AT ANY TIME. 
 SEVERANCE. IF YOU ARE TERMINATED
FOR REASONS OTHER THAN “CAUSE,” YOU WILL RECEIVE A MINIMUM SEVERANCE
PAYMENT EQUIVALENT TO FOUR (4) WEEKS OF BASE SALARY PAID OVER TIME
IN ACCORDANCE WITH THE COMPANY’S PAYROLL PRACTICES AND POLICIES. THE
SEVERANCE PAYMENT WILL BE CONDITIONAL UPON YOUR FIRST EXECUTING AND NOT
REVOKING A VALID WAIVER AND RELEASE OF ALL CLAIMS THAT YOU MAY
HAVE AGAINST THE COMPANY. TERMINATION FOR “CAUSE” WILL ELIMINATE ELIGIBILITY
FOR A SEVERANCE PAYMENT. “CAUSE” MEANS: (A) A WILLFUL BREACH OF
YOUR OBLIGATIONS UNDER THIS AGREEMENT, WHICH BREACH YOU FAIL TO CURE,
IF CURABLE, WITHIN (30) DAYS AFTER RECEIPT OF A WRITTEN NOTICE OF
SUCH BREACH; (B) GROSS NEGLIGENCE IN THE PERFORMANCE OR INTENTIONAL
NON-PERFORMANCE OF YOUR MATERIAL DUTIES TO THE COMPANY OR ANY OF
ITS AFFILIATES; (C)

  

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COMMISSION OF A FELONY OR A CRIME OF MORAL
TURPITUDE; (D) COMMISSION OF A MATERIAL ACT OF DECEIT, FRAUD, PERJURY
OR EMBEZZLEMENT THAT INVOLVES OR DIRECTLY OR INDIRECTLY CAUSES HARM TO
THE COMPANY OR ANY OF ITS AFFILIATES; OR (E) REPEATEDLY (I.E.,
ON MORE THAN ONE OCCASION) BEING UNDER THE INFLUENCE OF DRUGS OR
ALCOHOL (OTHER THAN OVER-THE-COUNTER OR PRESCRIPTION MEDICINE OR OTHER
MEDICALLY-RELATED DRUGS TO THE EXTENT THEY ARE TAKEN IN ACCORDANCE
WITH THEIR DIRECTIONS OR UNDER THE SUPERVISION OF A PHYSICIAN) DURING
THE PERFORMANCE OF YOUR DUTIES FOR THE COMPANY OR ANY OF ITS
AFFILIATES, OR, WHILE UNDER THE INFLUENCE OF SUCH DRUGS OR ALCOHOL,
ENGAGING IN GROSSLY INAPPROPRIATE CONDUCT DURING THE PERFORMANCE OF YOUR DUTIES
FOR THE COMPANY OR ANY OF ITS AFFILIATES. 
 RESIGNATION NOTICE. IF YOU ELECT TO VOLUNTARILY RESIGN
FROM THE COMPANY, YOU AGREE TO PROVIDE THE COMPANY WITH AT LEAST
FOUR (4) WEEKS’ NOTICE BEFORE THE EFFECTIVE DATE. NOTWITHSTANDING THE FOREGOING,
THE COMPANY RETAINS THE OPTION OF TERMINATING YOU UPON SUCH NOTICE OR
BEFORE THE END OF THE NOTICE PERIOD. IF YOU ELECT TO VOLUNTARILY
RESIGN, YOU WILL NOT BE ELIGIBLE FOR A SEVERANCE PAYMENT. 
 ADDITIONAL TERMS & CONDITIONS OF
EMPLOYMENT. THE COMPANY REQUIRES ITS EMPLOYEES TO SIGN AND COMPLY
WITH ADDITIONAL TERMS AND CONDITIONS OF EMPLOYMENT CONCERNING CONFIDENTIALITY, ASSIGNMENT
OF INVENTIONS AND WORKS OF AUTHORSHIP, NON-COMPETITION, AND NON-RECRUITMENT.
THE ADDITIONAL TERMS AND CONDITIONS OF EMPLOYMENT WILL BE PRESENTED TO
YOU FOR YOUR REVIEW, CONSIDERATION AND SIGNATURE IN DUE COURSE AND
MUST BE SIGNED BY WITHIN TEN (10) DAYS OF RECEIPT BY YOU. 
 IF YOU WISH TO ACCEPT EMPLOYMENT UNDER
THE TERMS DESCRIBED ABOVE, PLEASE SIGN AND DATE A COPY OF THIS
LETTER AND RETURN THE SIGNED AND DATED COPY TO ME NO LATER
THAN 30 OCTOBER 2009. 
 BY SIGNING THIS LETTER,
YOU ACKNOWLEDGE THAT THIS OFFER LETTER SUPERSEDES ANY OTHER OFFER, AGREEMENT,
OR PROMISES MADE TO YOU BY ANYONE, WHETHER ORAL OR WRITTEN,
SPECIFICALLY CONCERNING THE OFFER OF EMPLOYMENT BY THE COMPANY, AND WITH
THE EXCEPTION OF THE DETERMINATION OF THE NUMBER OF SHARES AND
OPTIONS AS NOTED ABOVE, THIS LETTER COMPRISES THE COMPLETE AGREEMENT BETWEEN
YOU AND THE COMPANY CONCERNING THE OFFER OF EMPLOYMENT BY THE
COMPANY. 
 IF YOU HAVE ANY QUESTIONS
REGARDING THIS OFFER, PLEASE DO NOT HESITATE TO CONTACT ME OR KATY
REYNOLDS. 
 I LOOK FORWARD TO YOUR FAVORABLE
REPLY AND TO A PRODUCTIVE AND ENJOYABLE WORK RELATIONSHIP. 
  

					
	SINCERELY,	 		 	Agreed & Accepted:
			
	 	 		 	/s/ Jon Cohen
		 		 	JON COHEN
	BRUCE KRANGEL	 		 	
	DIRECTOR, HR	 		 	DATE: 10/27/2009

  

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