SC 13D/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934
(Amendment No. 17)*

Berkshire Hathaway Inc.

(Name of Issuer)

Class B common stock, $0.0033 Par Value

(Title of Class of Securities)

084670702

(CUSIP Number)

Mike Rodden, Esq.

Rumei Mistry, Esq.

2365 Carillon Point

Kirkland, WA  98033

(425) 889-7900

(Name, Address and Telephone Number of Persons
Authorized to Receive Notices and Communications)

December 11, 2013

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. o

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No.   084670702

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Cascade Investment, L.L.C.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			o
		(b)			x
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization State of Washington
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 6,075,000(1)
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 6,075,000(1)
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 6,075,000(1)
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 0.5%
	14.	Type of Reporting Person (See Instructions) OO

(1) Cascade Investment, L.L.C. (“Cascade”) holds 4,050 shares of Berkshire Hathaway Inc. (the “Issuer”) Class A common stock (“Class A Shares”), each of which is convertible, at the option of the holder, into 1,500 shares of the Issuer’s Class B common stock (“Class B Shares”).  The number of Class B Shares above assumes the conversion of the 4,050 Class A Shares held by Cascade into 6,075,000 Class B Shares.  All shares of common stock held by Cascade may be deemed to be beneficially owned by William H. Gates III as the sole member of Cascade.

2

CUSIP No.   084670702

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Bill & Melinda Gates Foundation Trust
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			o
		(b)			x
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) OO
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization State of Washington
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power -0-
			8.	Shared Voting Power 83,056,704(1)
			9.	Sole Dispositive Power -0-
			10.	Shared Dispositive Power 83,056,704(1)
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 83,056,704(1)
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 7.1%
	14.	Type of Reporting Person (See Instructions) OO

(1) For purposes of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, all common stock beneficially owned by Bill & Melinda Gates Foundation Trust (the “Trust”) may be deemed to be beneficially owned by William H. Gates III and Melinda French Gates, as Co-Trustees of the Trust.

3

CUSIP No.   084670702

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) William H. Gates III
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			o
		(b)			x
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC, OO
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization United States of America
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 6,525,000(1)
			8.	Shared Voting Power 83,056,704(2)
			9.	Sole Dispositive Power 6,525,000(1)
			10.	Shared Dispositive Power 83,056,704(2)
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 89,581,704(1)(2)
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 7.7%
	14.	Type of Reporting Person (See Instructions) IN

(1) William H. Gates III beneficially owns 300 shares of Berkshire Hathaway Inc. (the “Issuer”) Class A common stock (“Class A Shares”) directly and an additional 4,050 Class A Shares through Cascade Investment, L.L.C. (“Cascade”), a limited liability company solely owned by Mr. Gates.  Each Class A Share is convertible, at the option of the holder, into 1,500 shares of the Issuer’s Class B common stock (“Class B Shares”).  The number of Class B Shares shown above assumes the conversion of the 300 Class A Shares held directly by Mr. Gates into 450,000 Class B Shares and the conversion of the 4,050 Class A Shares held by Cascade into 6,075,000 Class B Shares.

(2) Bill & Melinda Gates Foundation Trust (the “Trust”) beneficially owns 83,056,704 shares of the Issuer’s Class B Shares.  For purposes of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, all Class B Shares beneficially owned by the Trust may be deemed to be beneficially owned by William H. Gates III and Melinda French Gates, as Co-Trustees of the Trust.

4

CUSIP No.   084670702

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Melinda French Gates
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			o
		(b)			x
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) OO
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization United States of America
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power -0-
			8.	Shared Voting Power 83,056,704(1)
			9.	Sole Dispositive Power -0-
			10.	Shared Dispositive Power 83,056,704(1)
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 83,056,704(1)
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 7.1%
	14.	Type of Reporting Person (See Instructions) IN

(1) Bill & Melinda Gates Foundation Trust (the “Trust”) beneficially owns 83,056,704 shares of Berkshire Hathaway Inc. Class B common stock (“Class B Shares”).  For purposes of Rule 13d-3 under the Securities Exchange Act of 1934, as amended, all Class B Shares beneficially owned by the Trust may be deemed to be beneficially owned by William H. Gates III and Melinda French Gates, as Co-Trustees of the Trust.

5

EXPLANATORY STATEMENT

This Amendment No. 17 to Schedule 13D (“Amendment”) relates to the Class B common stock, $0.0033 Par Value (“Class B Shares”) of Berkshire Hathaway Inc. (the “Issuer”).  Cascade Investment, L.L.C. (“Cascade”), Bill & Melinda Gates Foundation Trust (the “Trust”), William H. Gates III and Melinda French Gates (collectively, the “Reporting Persons”) jointly file this Amendment to amend and supplement the Items set forth below of the Reporting Persons’ Schedule 13D previously filed with the Securities and Exchange Commission on August 24, 2006, as amended on July 17, 2007, March 20, 2008, July 3, 2008, March 6, 2009, July 2, 2009, March 2, 2010, March 19, 2010, July 2, 2010, November 12, 2010, March 18, 2011, July 7, 2011, January 13, 2012, July 6, 2012, November 19, 2012, March 28, 2013 and July 10, 2013.

Item 5.

Interest in Securities of the Issuer.

(a)See Items 11 and 13 of the cover pages to this Amendment for the aggregate number and percentage of Class B Shares beneficially owned by each of the Reporting Persons. (b)See Items 7 through 10 of the cover pages to this Amendment for the number of Class B Shares beneficially owned by each of the Reporting Persons as to which there is sole or shared power to vote or to direct the vote and sole or shared power to dispose or to direct the disposition. (c)During the period October 14 through December 11, 2013, the Trust sold 3,358,300 Class B Shares, as set forth in Exhibit 99.1 hereto, pursuant to the Trust’s Rule 10b5-1 sales plan.  The sales were made to facilitate compliance with federal excise tax rules limiting excess business holdings by private foundations. (d)None. (e)Not applicable.

Item 7.	Material to be Filed as Exhibits.
Exhibit 99.1    Sale transactions during the period October 14 through December 11, 2013

6

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date:   December 13, 2013

	CASCADE INVESTMENT, L.L.C.(1)
	By:	*
		Name:	Alan Heuberger(2)
		Title:	Attorney-in-fact for Michael Larson,
			Business Manager(3)
	BILL & MELINDA GATES FOUNDATION TRUST(1)
	By:	*
		Name:	Alan Heuberger(4)
		Title:	Attorney-in-fact for each of the Co-Trustees, William H. Gates III and Melinda French Gates
	WILLIAM H. GATES III(1)
	By:	*
		Name:	Alan Heuberger(4)(5)
		Title:	Attorney-in-fact
	MELINDA FRENCH GATES(1)
	By:	*
		Name:	Alan Heuberger(4)
		Title:	Attorney-in-fact
*By:	/s/ Alan Heuberger
	Alan Heuberger

(1)This Amendment is being filed jointly by the Reporting Persons pursuant to the Joint Filing Agreement dated August 24, 2006 and included with the signature page to the Reporting Persons’ Schedule 13D with respect to the Issuer filed on August 24, 2006, SEC File No. 005-55113, and incorporated by reference herein.

(2)Duly authorized under Special Limited Power of Attorney appointing Alan Heuberger attorney-in-fact, dated October 12, 2013, by and on behalf of Michael Larson, filed as Exhibit 99.1 to Amendment No. 9 to Cascade’s Schedule 13D with respect to Western Asset/Claymore Inflation-Linked Opportunities & Income Fund on December 11, 2013, SEC File No. 005-81261, and incorporated by reference herein.

(3)Michael Larson is the chief investment officer to William H. Gates III and the Business Manager of Cascade.  He is responsible for all of Mr. Gates’ non-Microsoft investments as well as all of the investments of the Bill & Melinda Gates Foundation Trust.

(4)Duly authorized under Special Limited Power of Attorney appointing Alan Heuberger attorney-in-fact, dated August 12, 2008, by and on behalf of William H. Gates III and Melinda French Gates as Co-Trustees, filed as Exhibit 99.5 to Cascade’s Schedule 13D with respect to Grupo Televisa, S.A.B. on May 7, 2009, SEC File No. 005-60431 and incorporated by reference herein.

(5)Duly authorized under Special Limited Power of Attorney appointing Alan Heuberger attorney-in-fact, dated August 12, 2008, by and on behalf of William H. Gates III, filed as Exhibit 99.2 to Amendment No. 1 to Cascade’s Schedule 13D with respect to Otter Tail Corporation on April 15, 2009, SEC File No. 005-06638 and incorporated by reference herein.

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EX-99.1

Exhibit 99.1

The table below specifies the date, quantity, weighted-average sale price and range of price per share of Class B common stock of Berkshire Hathaway Inc. sold by Bill & Melinda Gates Foundation Trust (the “Trust”) during the period October 14 through December 11, 2013.  The Trust undertakes to provide upon request by the staff of the Securities and Exchange Commission full information regarding the number of shares sold at each separate price.  All of the transactions were effected on the New York Stock Exchange or through Electronic Communication Networks.

Date of Transaction	Number of Shares of Common Stock Sold	Weighted-Average Price Paid Per Share ($)	Range of Price Paid Per Share ($)
12/11/2013	77,000	114.7450	114.2800 - 115.2500
12/11/2013	1,100	115.7111	115.7100 - 115.7150
12/10/2013	72,890	116.0202	115.6300 - 116.6200
12/10/2013	5,210	116.8321	116.6300 - 117.0700
12/9/2013	78,100	117.2027	116.8600 - 117.4500
12/6/2013	78,100	116.1662	115.7600 - 116.5800
12/5/2013	78,100	115.1014	114.8900 - 115.5300
12/4/2013	78,100	115.2503	114.5800 - 115.5600
12/3/2013	78,100	114.4608	114.0650 - 115.0000
12/2/2013	48,180	115.6135	115.1300 - 116.1250
12/2/2013	29,920	116.3189	116.1300 - 116.5500
11/29/2013	78,100	116.6680	116.1300 - 116.9700
11/27/2013	78,100	116.4910	115.9700 - 116.9200
11/26/2013	75,221	116.5474	115.8100 - 116.8050
11/26/2013	2,879	116.8164	116.8100 - 116.8300
11/25/2013	55,815	115.8821	115.4000 - 116.3900
11/25/2013	22,285	116.7294	116.4000 - 117.2300
11/22/2013	78,100	117.0911	116.7600 - 117.3100
11/21/2013	33,497	115.8923	115.1900 - 116.1850
11/21/2013	44,603	116.3137	116.1900 - 116.4600
11/20/2013	67,092	115.0572	114.5600 - 115.5550
11/20/2013	11,008	115.6082	115.5600 - 115.7700
11/19/2013	78,100	115.7446	115.4900 - 116.1600
11/18/2013	78,100	116.0697	115.7050 - 116.4500
11/15/2013	78,100	115.9537	115.3500 - 116.1900
11/14/2013	78,100	115.3426	114.7300 - 115.6600
11/13/2013	78,100	114.5143	114.0150 - 114.8600
11/12/2013	69,905	114.2276	114.0200 - 115.0100
11/12/2013	8,195	115.1359	115.0200 - 115.2400
11/11/2013	78,100	115.4876	115.2800 - 115.8900
11/8/2013	9,200	114.3650	113.8000 - 114.7700
11/8/2013	68,800	115.2586	114.8100 - 115.7900
11/8/2013	100	115.8000	115.8000 - 115.8000
11/7/2013	56,288	114.3962	113.9200 - 114.9150
11/7/2013	21,812	115.0696	114.9200 - 115.3300
11/6/2013	78,100	114.9060	114.6000 - 115.1000
11/5/2013	78,100	114.7680	114.3500 - 115.0900
11/4/2013	77,000	114.7681	114.5150 - 115.3550
11/4/2013	1,100	115.7041	115.7000 - 115.7200
11/1/2013	78,100	115.3835	114.9850 - 115.8900
10/31/2013	78,100	115.6348	115.3800 - 115.9300
10/30/2013	70,395	116.7830	116.3800 - 117.3700
10/30/2013	7,705	117.5109	117.3800 - 117.5700
10/29/2013	78,100	116.9476	116.7700 - 117.2550
10/28/2013	78,100	116.9082	116.6700 - 117.1300
10/25/2013	78,100	116.7618	116.5250 - 117.0800
10/24/2013	78,100	116.8387	116.6150 - 117.3100
10/23/2013	78,100	116.5578	116.3300 - 117.1600
10/22/2013	78,100	117.4079	117.0450 - 117.6050
10/21/2013	78,100	116.7163	116.4300 - 116.8500
10/18/2013	78,100	117.0363	116.8100 - 117.4250
10/17/2013	78,100	116.7481	116.4300 - 117.2500
10/16/2013	16,240	115.8803	115.0950 - 116.0900
10/16/2013	61,860	116.4520	116.1000 - 116.7600
10/15/2013	75,300	115.0278	114.5700 - 115.5600
10/15/2013	2,800	115.6438	115.5700 - 115.7200
10/14/2013	29,300	115.0190	114.4900 - 115.4800
10/14/2013	48,800	115.7376	115.4900 - 116.0100