BERKSHIRE HATHAWAY INC DEL

Ticker: BRK/B CUSIP: 084670702 Class: Common Stock

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AM's Holding History (CIK: 0001132716)

Note: Option positions (PUT/CALL) are excluded.

Q2 2015

Shares 8,828 Value ($000) $1,202,000 Avg Close $142.63 Range $136.08 - $148.57

Q1 2015

Shares 4,428 Value ($000) $639,000 Avg Close $147.14 Range $142.50 - $151.69

Q4 2014

Shares 3,267 Value ($000) $491,000 Avg Close $144.37 Range $132.03 - $152.94

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2015	8,828	$1,202,000	$142.63	$136.08 - $148.57
Q1 2015	4,428	$639,000	$147.14	$142.50 - $151.69
Q4 2014	3,267	$491,000	$144.37	$132.03 - $152.94