BRISTOW GROUP INC

CUSIP: 110394AC7 Class: NOTE 3.000% 6/1

HighTower Advisors, LLC's Holding History (CIK: 0001462245)

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

Q4 2013
Shares 12,000 Value ($000) $15 Avg Close — Range —
Q3 2013
Shares 24,000 Value ($000) $29 Avg Close — Range —
Q2 2013
Shares 24,000 Value ($000) $28 Avg Close — Range —