X0303 4 2009-10-15 0001067983 BERKSHIRE HATHAWAY INC BRK.B 0001166559 BILL & MELINDA GATES FOUNDATION TRUST 1551 EASTLAKE AVENUE E. SEATTLE WA 98102 1 Class B Common Stock 2009-10-15 4 S 0 10 3343.02 D 1620948 D Class B Common Stock 2009-10-15 4 S 0 11 3345.77 D 1620937 D Class B Common Stock 2009-10-15 4 S 0 67 3345.05 D 1620870 D Class B Common Stock 2009-10-15 4 S 0 90 3343 D 1620780 D Class B Common Stock 2009-10-15 4 S 0 100 3357 D 1620680 D Class B Common Stock 2009-10-15 4 S 0 100 3356.6 D 1620580 D Class B Common Stock 2009-10-15 4 S 0 100 3352 D 1620480 D Class B Common Stock 2009-10-15 4 S 0 100 3344.5 D 1620380 D Class B Common Stock 2009-10-15 4 S 0 100 3343.01 D 1620280 D Class B Common Stock 2009-10-15 4 S 0 100 3342 D 1620180 D Class B Common Stock 2009-10-15 4 S 0 100 3338.78 D 1620080 D Class B Common Stock 2009-10-15 4 S 0 200 3350 D 1619880 D The sales reported in this filing were made pursuant to Bill & Melinda Gates Foundation Trust's 10b5-1 sales plan to facilitate compliance with federal excise tax rules limiting excess business holdings by private foundations. Bill & Melinda Gates Foundation Trust By: /s/ Alan Heuberger, Attorney-in-Fact for each of the Co-Trustees, William H. Gates III and Melinda French Gates 2009-10-16