BERKSHIRE HATHAWAY INC DEL

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

MASSACHUSETTS MUTUAL LIFE INSURANCE CO's Holding History (CIK: 0000225602)

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

Q3 2013

Shares 8,789 Value ($000) $997 Avg Close $115.36 Range $110.72 - $119.30

Q2 2013

Shares 5,441 Value ($000) $609 Avg Close $110.02 Range $102.69 - $115.98

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2013	8,789	$997	$115.36	$110.72 - $119.30
Q2 2013	5,441	$609	$110.02	$102.69 - $115.98