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 past sixty days.  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 affected on the New York Stock Exchange or through Electronic Communication Networks.

Trade Date	Quantity Sold	Weighted-Average Price Per Share Sold ($)	Range of Price ($)
5/9/2011	47,400	80.8775	80.3000 – 81.2950
5/9/2011	7,600	81.3388	81.3000 – 81.4100
5/10/2011	55,000	80.9865	80.6100 – 81.2500
5/11/2011	55,000	80.2197	80.0000 – 80.7700
5/12/2011	49,500	80.4482	79.8900 – 80.8850
5/12/2011	5,500	80.9525	80.8900 – 81.0550
5/13/2011	52,000	79.7330	79.6100 – 80.1500
5/13/2011	3,000	80.8467	80.7400 – 81.0000
5/16/2011	55,000	79.6408	79.2700 – 80.1600
5/17/2011	55,000	78.9240	78.5750 – 79.2800
5/18/2011	55,000	79.3440	78.9800 – 79.6500
5/19/2011	55,000	79.1847	78.9150 – 79.6700
5/20/2011	55,000	79.0396	78.6550 – 79.5650
5/23/2011	58,105	78.0376	77.7000 – 78.3200
5/24/2011	57,000	77.8701	77.6600 – 78.1900
5/25/2011	52,000	77.8503	77.3000 – 78.2950
5/25/2011	8,000	78.3753	78.3000 – 78.5000
5/26/2011	49,000	78.0358	77.5200 – 78.5000
5/26/2011	6,000	78.6406	78.5400 – 78.6750
5/27/2011	55,000	77.9529	77.7200 – 78.4350
5/31/2011	65,000	78.6966	78.3500 – 79.0000
6/1/2011	47,600	77.5994	77.0550 – 78.0450
6/1/2011	7,400	78.3361	78.0550 – 78.8100
6/2/2011	65,000	77.3031	77.0150 – 77.7500
6/3/2011	65,000	76.4385	76.1550 – 76.8550
6/6/2011	65,000	75.6459	75.2250 – 76.0000
6/7/2011	65,000	75.4517	74.8800 – 75.8700
6/8/2011	65,000	74.6131	74.2850 – 75.0700
6/9/2011	65,000	75.0724	74.4200 – 75.4000
6/10/2011	65,000	74.1964	73.7450 – 74.6400
6/13/2011	65,000	74.2307	73.8500 – 74.4900
6/14/2011	65,000	75.3210	74.8600 – 75.7300
6/15/2011	61,300	73.8309	73.2600 – 74.2500

Trade Date	Quantity Sold	Weighted-Average Price Per Share Sold ($)	Range of Price ($)
6/15/2011	3,700	74.2876	74.2700 – 74.3500
6/16/2011	42,300	74.6659	73.9100 – 74.9050
6/16/2011	22,700	74.9771	74.9100 – 75.0650
6/17/2011	65,000	75.6143	75.1950 – 75.7950
6/20/2011	70,000	76.0456	75.5600 – 76.4300
6/21/2011	70,000	76.4584	76.1700 – 76.7200
6/22/2011	70,000	76.1061	75.9600 – 76.4000
6/23/2011	58,134	74.9188	74.4800 – 75.4600
6/23/2011	11,866	75.5977	75.4800 – 75.7200
6/24/2011	69,700	75.0281	74.7000 – 75.6950
6/24/2011	300	75.7083	75.7000 – 75.7250
6/27/2011	70,000	75.9567	75.6200 – 76.3300
6/28/2011	70,000	76.1429	75.9300 – 76.4000
6/29/2011	75,000	76.7588	76.4000 – 77.0500
6/30/2011	74,895	77.2834	76.9600 – 77.4800
7/1/2011	43,832	77.7584	76.9500 – 77.9450
7/1/2011	31,168	78.0533	77.9500 – 78.1900
7/5/2011	75,000	77.3424	76.9850 – 77.5450
7/6/2011	75,000	76.3940	76.1950 – 76.6400