BERKSHIRE HATHAWAY INC DEL

CUSIP: 84670702 Class: Common

GREAT LAKES ADVISORS, LLC's Holding History (CIK: 0001078013)

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

Q4 2013
Shares 5,402 Value ($000) $640 Avg Close — Range —
Q2 2013
Shares 5,635 Value ($000) $631 Avg Close — Range —