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 July 30, 2018, through September 28, 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	Range of Price per Share ($)
Date of Transaction	Number of Shares Sold	Price per Share ($)	Low	High
September 28, 2018	15,169	214.5605	213.9300	214.9250
September 28, 2018	66,131	215.3133	214.9300	215.7900
September 28, 2018	2,100	216.0183	216.0000	216.1400
September 27, 2018	7,475	215.8069	215.2800	216.2700
September 27, 2018	65,652	216.8532	216.2900	217.2600
September 27, 2018	6,173	217.4234	217.2800	217.6500
September 26, 2018	11,518	216.3582	215.8000	216.7600
September 26, 2018	56,111	217.3815	216.8000	217.7950
September 26, 2018	11,671	217.9556	217.8000	218.3800
September 25, 2018	76,997	217.9735	217.4300	218.4150
September 25, 2018	2,303	218.4855	218.4300	218.5600
September 24, 2018	47,831	218.3065	217.9300	218.9250
September 24, 2018	24,835	219.3120	218.9300	219.9100
September 24, 2018	6,634	220.1783	219.9300	220.6300
September 21, 2018	40,838	220.8781	220.2900	221.2800
September 21, 2018	8,862	221.5793	221.2900	222.2700
September 21, 2018	29,600	222.3702	222.3000	222.5100
September 20, 2018	62,692	222.0672	221.3700	222.3600
September 20, 2018	16,608	222.5653	222.3700	222.9900
September 19, 2018	2,700	218.3259	217.7200	218.6900
September 19, 2018	5,755	219.4356	218.7600	219.7150
September 19, 2018	39,612	220.0715	219.7200	220.7100
September 19, 2018	31,233	221.0244	220.7200	221.3100
September 18, 2018	22,667	217.0074	216.5800	217.5750
September 18, 2018	56,633	218.1090	217.5800	218.4600
September 17, 2018	76,382	216.2052	215.7600	216.7400
September 17, 2018	2,918	216.8920	216.7600	217.1000
September 14, 2018	79,300	215.8166	215.3700	216.3600
September 13, 2018	73,892	214.8727	214.2000	215.1950
September 13, 2018	5,408	215.2520	215.2000	215.3900
September 12, 2018	77,000	214.8800	214.2100	215.2050
September 12, 2018	2,300	215.2484	215.2100	215.3700
September 11, 2018	12,892	213.3167	212.8200	213.7900
September 11, 2018	11,692	214.3955	213.8200	214.8050
September 11, 2018	54,616	215.3623	214.8200	215.7800
September 11, 2018	100	215.8600	215.8600	215.8600
September 10, 2018	46,599	215.1076	214.4500	215.4450
September 10, 2018	32,701	215.8109	215.4500	216.2500
September 7, 2018	18,331	213.2426	212.5000	213.4900
September 7, 2018	60,969	213.9669	213.5000	214.4500
September 6, 2018	55,789	212.2197	211.6100	212.6000
September 6, 2018	23,511	213.0796	212.6100	213.3900
September 5, 2018	2,900	210.4690	209.8300	210.8100
September 5, 2018	55,864	211.4691	210.8500	211.8250
September 5, 2018	20,536	211.9791	211.8300	212.2700
September 4, 2018	45,072	208.5577	208.0650	209.0500
September 4, 2018	34,228	209.4607	209.1300	209.7600
August 31, 2018	56,274	208.6407	208.1500	209.1400
August 31, 2018	23,026	209.6254	209.1550	209.9900
August 30, 2018	66,254	210.3489	209.7400	210.7350
August 30, 2018	13,046	210.9047	210.7400	211.2200

		Weighted Average	Range of Price per Share ($)
Date of Transaction	Number of Shares Sold	Price per Share ($)	Low	High
August 29, 2018	76,467	210.8120	210.2000	211.1950
August 29, 2018	2,833	211.2211	211.2000	211.2700
August 28, 2018	75,740	210.6786	210.1400	211.1350
August 28, 2018	3,560	211.1607	211.1400	211.2000
August 27, 2018	8,300	209.0671	208.5600	209.5500
August 27, 2018	63,849	210.1777	209.5600	210.5550
August 27, 2018	7,151	210.5920	210.5600	210.7200
August 24, 2018	79,300	207.8056	207.3500	208.1300
August 23, 2018	78,800	207.1288	206.7000	207.6900
August 23, 2018	500	207.7380	207.7000	207.7900
August 22, 2018	79,300	207.3221	207.0200	207.8200
August 21, 2018	33	206.7000	206.7000	206.7000
August 21, 2018	17,672	208.5212	208.2600	208.6950
August 21, 2018	61,595	208.9487	208.7000	209.3500
August 20, 2018	73,099	208.5241	208.0300	209.0200
August 20, 2018	6,201	209.2292	209.0300	209.5200
August 17, 2018	43,457	207.4874	206.9500	207.9400
August 17, 2018	35,843	208.1154	207.9500	208.4100
August 16, 2018	8,373	205.2094	204.6500	205.6200
August 16, 2018	17,634	206.1533	205.6500	206.6200
August 16, 2018	53,293	207.1537	206.6500	207.5900
August 15, 2018	43,286	204.3155	203.6000	204.5900
August 15, 2018	36,014	204.8855	204.6000	205.3800
August 14, 2018	61,744	205.6850	204.9750	205.9700
August 14, 2018	17,556	206.1158	205.9800	206.4500
August 13, 2018	54,412	205.5267	205.0700	206.0600
August 13, 2018	24,888	206.6439	206.0800	207.0100
August 10, 2018	44,549	206.2267	205.6200	206.6150
August 10, 2018	34,651	206.8946	206.6200	207.6000
August 10, 2018	100	207.7000	207.7000	207.7000
August 9, 2018	79,300	209.1605	208.8200	209.6400
August 8, 2018	73,100	208.9577	208.4700	209.4600
August 8, 2018	6,200	209.5507	209.4700	209.7000
August 7, 2018	6,876	207.9425	207.2400	208.2300
August 7, 2018	33,639	208.7870	208.2400	209.2300
August 7, 2018	38,785	209.5102	209.2400	209.9400
August 6, 2018	7,000	205.4179	205.0000	205.9700
August 6, 2018	41,134	206.5080	206.1000	206.9900
August 6, 2018	30,866	207.5528	207.0000	207.9700
August 6, 2018	300	208.0533	208.0100	208.0900
August 3, 2018	33,572	198.7427	198.1600	199.1500
August 3, 2018	39,767	199.8439	199.1600	200.1500
August 3, 2018	5,961	200.2184	200.1600	200.3400
August 2, 2018	32,001	197.3140	196.7900	197.7700
August 2, 2018	47,299	198.2650	197.7900	198.7100
August 1, 2018	38,867	197.9889	197.3500	198.3450
August 1, 2018	36,922	198.8044	198.3500	199.3400
August 1, 2018	3,511	199.4545	199.3500	199.6400
July 31, 2018	61,642	197.6491	197.1000	198.0900
July 31, 2018	15,058	198.4119	198.1000	199.0800
July 31, 2018	2,600	199.2162	199.1300	199.5000
July 30, 2018	20,025	198.4951	197.8000	198.7900
July 30, 2018	57,824	199.1254	198.8000	199.7900
July 30, 2018	1,451	199.8407	199.8000	199.9100