BERKSHIRE HATHAWAY INC DEL

Ticker: BRK/A CUSIP: 084670108 Class: CL A

Columbia Asset Management's Holding History (CIK: 0001585047)

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

Q2 2017

Shares 30,811 Value ($000) $5,218 Avg Close $249666.89 Range $242180.00 - $257945.00

Q1 2017

Shares 30,356 Value ($000) $5,059 Avg Close $250864.50 Range $237984.00 - $266445.00

Q3 2016

Shares 30,287 Value ($000) $4,375 Avg Close $219349.66 Range $211500.00 - $226490.00

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2017	30,811	$5,218	$249666.89	$242180.00 - $257945.00
Q1 2017	30,356	$5,059	$250864.50	$237984.00 - $266445.00
Q3 2016	30,287	$4,375	$219349.66	$211500.00 - $226490.00