EXHIBIT 99.1

The table below specifies the date of the transaction, number of shares, weighted-average price per share and range of price per share of the Class B common stock of Berkshire Hathaway Inc. sold by the Bill & Melinda Gates Foundation Trust (the “Trust”) during the period from May 21, 2018, through July 20, 2018.  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 transactions were effected in the open market.

		Weighted Average Price	Range of Price per Share ($)
Date of Transaction	Number of Shares Sold	per Share ($)	Low	High
July 20, 2018	75,600	196.8624	196.4700	197.4500
July 20, 2018	3,700	197.5619	197.4900	197.6400
July 19, 2018	40,748	197.7339	197.3200	198.3100
July 19, 2018	26,979	198.7909	198.3200	199.3100
July 19, 2018	6,578	199.6547	199.3400	200.0600
July 19, 2018	4,995	200.6074	200.3600	200.8900
July 18, 2018	5,520	195.7602	195.4000	196.3700
July 18, 2018	3,400	197.0150	196.4000	197.3800
July 18, 2018	17,713	197.9750	197.4200	198.3900
July 18, 2018	2,100	199.0586	198.4000	199.3900
July 18, 2018	25,638	200.0923	199.4100	200.3950
July 18, 2018	24,929	200.5912	200.4000	200.9500
July 17, 2018	74,920	190.8793	190.3400	191.3200
July 17, 2018	4,380	191.7380	191.3400	191.9900
July 16, 2018	33,092	191.4960	190.7000	191.6900
July 16, 2018	46,208	191.8618	191.7000	192.1500
July 13, 2018	44,443	189.6538	189.2100	190.0700
July 13, 2018	34,307	190.8972	190.3600	191.1900
July 13, 2018	550	191.2364	191.2100	191.2500
July 12, 2018	74,254	189.5026	188.9500	189.9400
July 12, 2018	5,046	190.1812	189.9500	190.9100
July 11, 2018	27,591	189.4503	188.8100	189.8000
July 11, 2018	51,709	190.0551	189.8100	190.5700
July 10, 2018	64,711	189.7968	189.1700	190.1600
July 10, 2018	14,589	190.2911	190.1700	190.5600
July 9, 2018	24,236	188.6052	188.0700	189.0600
July 9, 2018	55,064	189.3966	189.0700	189.6700
July 6, 2018	28,975	187.3112	186.5900	187.5800
July 6, 2018	49,925	188.0965	187.5900	188.5800
July 6, 2018	400	188.6400	188.6000	188.6700
July 5, 2018	62,857	186.8942	186.2400	187.2300
July 5, 2018	16,443	187.3441	187.2400	187.5500
July 3, 2018	28,942	186.5199	185.8100	186.8000
July 3, 2018	30,303	187.2684	186.8100	187.8000
July 3, 2018	20,055	188.2667	187.8500	188.7200
July 2, 2018	33,266	186.8002	186.0700	187.0600
July 2, 2018	45,934	187.3905	187.0700	188.0600
July 2, 2018	100	188.0800	188.0800	188.0800
June 29, 2018	9,813	187.5197	186.8300	187.8200
June 29, 2018	60,611	188.4202	187.8400	188.8200
June 29, 2018	9,276	188.9276	188.8300	189.2400
June 28, 2018	24,106	185.7052	185.1800	186.1700
June 28, 2018	25,966	186.7038	186.1800	187.1700
June 28, 2018	28,028	187.4594	187.1800	187.8650
June 27, 2018	26,694	185.3621	184.7500	185.7400

		Weighted Average Price	Range of Price per Share ($)
Date of Transaction	Number of Shares Sold	per Share ($)	Low	High
June 27, 2018	18,218	186.2154	185.7500	186.7400
June 27, 2018	32,459	187.2207	186.7500	187.7400
June 27, 2018	729	187.8101	187.7500	187.8700
June 26, 2018	35,469	186.5153	185.8100	186.8000
June 26, 2018	42,631	187.0492	186.8100	187.6200
June 25, 2018	21,270	185.7531	185.1900	186.1800
June 25, 2018	33,751	186.6755	186.1900	187.1800
June 25, 2018	19,601	187.4795	187.1900	188.1800
June 25, 2018	3,478	188.4510	188.2700	188.6500
June 22, 2018	64,985	189.6287	188.9900	189.9800
June 22, 2018	13,115	190.0467	189.9900	190.2400
June 21, 2018	64,206	188.4880	188.0000	188.9950
June 21, 2018	13,894	189.2750	189.0000	189.8000
June 20, 2018	74,008	189.7327	189.2800	190.2750
June 20, 2018	4,092	190.4961	190.2800	190.7300
June 19, 2018	31,153	189.9979	189.3700	190.3600
June 19, 2018	46,947	190.7012	190.3700	191.1200
June 18, 2018	61,557	190.6415	189.9500	190.9400
June 18, 2018	16,543	191.1185	190.9500	191.3400
June 15, 2018	19,329	191.2178	190.5500	191.5450
June 15, 2018	58,771	191.7815	191.5500	192.4000
June 14, 2018	55,845	192.4931	192.0600	193.0500
June 14, 2018	11,307	193.7531	193.1000	194.0500
June 14, 2018	10,948	194.3538	194.0600	195.0000
June 13, 2018	54,630	194.9176	194.2700	195.2650
June 13, 2018	23,470	195.4624	195.2700	195.9900
June 12, 2018	71,797	195.1711	194.7300	195.7200
June 12, 2018	6,303	195.8394	195.7300	195.9800
June 11, 2018	70,138	195.8774	195.3600	196.3500
June 11, 2018	7,962	196.5040	196.3600	196.7400
June 8, 2018	12,673	194.9699	194.3400	195.3350
June 8, 2018	65,127	195.7547	195.3400	196.3200
June 8, 2018	300	196.3467	196.3400	196.3600
June 7, 2018	37,507	194.4715	193.7800	194.7700
June 7, 2018	40,593	195.2394	194.7800	195.6500
June 6, 2018	12,504	192.4900	191.7350	192.7300
June 6, 2018	60,186	193.4090	192.7350	193.7300
June 6, 2018	5,410	193.7788	193.7400	193.9000
June 5, 2018	76,499	190.7084	190.1800	191.1700
June 5, 2018	1,601	191.2069	191.1800	191.2900
June 4, 2018	46,838	191.7296	191.3000	192.2900
June 4, 2018	30,962	192.8579	192.3000	193.2800
June 4, 2018	300	193.3765	193.3500	193.3900
June 1, 2018	65,842	191.9947	191.6100	192.5900
June 1, 2018	12,258	193.0485	192.6400	193.3700
May 31, 2018	28,360	192.2034	191.4900	192.4800
May 31, 2018	48,446	192.9088	192.4900	193.4800
May 31, 2018	1,294	193.5585	193.4900	193.6800
May 30, 2018	24,947	191.8367	191.3400	192.3300
May 30, 2018	11,671	192.7884	192.3400	193.3300
May 30, 2018	25,488	193.9412	193.3600	194.3300
May 30, 2018	15,994	194.6159	194.3400	194.8900
May 29, 2018	27,450	189.1537	188.6500	189.6400
May 29, 2018	16,247	189.8862	189.6500	190.6400
May 29, 2018	21,706	191.3449	190.7600	191.6400
May 29, 2018	10,597	191.9477	191.6500	192.5200

		Weighted Average Price	Range of Price per Share ($)
Date of Transaction	Number of Shares Sold	per Share ($)	Low	High
May 29, 2018	2,100	192.9954	192.9000	193.0000
May 25, 2018	66,268	193.7485	193.2500	194.2400
May 25, 2018	11,832	194.4439	194.2600	194.7100
May 24, 2018	56,342	194.6752	193.9300	194.9250
May 24, 2018	21,078	195.1620	194.9300	195.9250
May 24, 2018	680	195.9881	195.9300	196.1100
May 23, 2018	63,487	195.3940	194.9900	195.9700
May 23, 2018	13,313	196.4912	195.9900	196.9750
May 23, 2018	1,300	197.2012	197.0000	197.4900
May 22, 2018	54,840	198.0030	197.2700	198.2650
May 22, 2018	23,260	198.4776	198.2700	198.8500
May 21, 2018	29,073	197.7334	197.0400	198.0350
May 21, 2018	49,027	198.2701	198.0400	198.6000