BRISTOW GROUP INC

CUSIP: 110394103 Class: COM

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

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

Q4 2017
Shares 8,981 Value ($000) $121 Avg Close — Range —
Q3 2017
Shares 15,144 Value ($000) $141 Avg Close — Range —
Q2 2017
Shares 16,310 Value ($000) $126 Avg Close — Range —