GULFMARK OFFSHORE INC

CUSIP: 402629208 Class: COMMON STOCK

Tower Research Capital LLC (TRC)'s Holding History (CIK: 0001533421)

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

Q4 2016
Shares 1,159 Value ($000) $2 Avg Close — Range —
Q3 2016
Shares 430 Value ($000) $1 Avg Close — Range —
Q2 2016
Shares 10,227 Value ($000) $32 Avg Close — Range —
Q1 2016
Shares 300 Value ($000) $2 Avg Close — Range —
Q3 2015
Shares 685 Value ($000) $4 Avg Close — Range —
Q2 2015
Shares 774 Value ($000) $9 Avg Close — Range —
Q1 2015
Shares 14,940 Value ($000) $195 Avg Close — Range —
Q4 2014
Shares 140 Value ($000) $3 Avg Close — Range —
Q3 2014
Shares 603 Value ($000) $19 Avg Close — Range —
Q2 2014
Shares 38 Value ($000) $2 Avg Close — Range —
Q1 2014
Shares 34 Value ($000) $2 Avg Close — Range —
Q4 2013
Shares 1,072 Value ($000) $51 Avg Close — Range —
Q3 2013
Shares 4,136 Value ($000) $211 Avg Close — Range —