X0202 4 2005-12-27 0 0001067983 BERKSHIRE HATHAWAY INC BRK/A 0000902012 GATES WILLIAM H III ONE MICROSOFT WAY REDMOND WA 98052 1 0 0 0 Class A Common Stock 2005-12-27 4 P 0 10 88940.10 A Class B Common Stock 300 3730 I By Limited Liability Company Class A Common Stock 2005-12-27 4 P 0 10 88900.00 A Class B Common Stock 300 3740 I By Limited Liability Company Class A Common Stock 2005-12-27 4 P 0 10 88800.00 A Class B Common Stock 300 3750 I By Limited Liability Company Class A Common Stock 2005-12-27 4 P 0 10 88700.00 A Class B Common Stock 300 3760 I By Limited Liability Company Class A Common Stock 2005-12-27 4 P 0 20 88600.00 A Class B Common Stock 600 3780 I By Limited Liability Company Class A Common Stock 2005-12-27 4 P 0 10 88550.00 A Class B Common Stock 300 3790 I By Limited Liability Company Class A Common Stock 2005-12-27 4 P 0 20 88500.00 A Class B Common Stock 600 3810 I By Limited Liability Company Class A Common Stock 2005-12-27 4 P 0 10 88490.00 A Class B Common Stock 300 3820 I By Limited Liability Company Class A Common Stock Class B Common Stock 9000 300 D Each share of Class A Common Stock is convertible at any time at the option of the holder into 30 shares of Class B Common Stock. + Duly authorized under Special Power of Attorney appointing Michael Larson attorney-in-fact, dated February 4, 2005, by and on behalf of William H. Gates III, filed as Exhibit 99.3 to Cascade Investment. L.L.C.'s Amendment No. 5 to Schedule 13G with respect to Canadian National Railway Company on February 11, 2005, SEC File No. 005-48661, and incorporated by reference herein. Michael Larson+, on behalf of William H. Gates III. 2005-12-29