GULFMARK OFFSHORE INC

CUSIP: 402629208 Class: COMMON STOCK

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q1 2017
Shares 5,726 Value ($000) $2 Avg Close — Range —
Q4 2016
Shares 1,751 Value ($000) $3 Avg Close — Range —
Q3 2016
Shares 751 Value ($000) $1 Avg Close — Range —
Q1 2016
Shares 4,274 Value ($000) $26 Avg Close — Range —
Q4 2015
Shares 46,337 Value ($000) $216 Avg Close — Range —
Q3 2015
Shares 6,376 Value ($000) $38 Avg Close — Range —
Q2 2015
Shares 5,146 Value ($000) $59 Avg Close — Range —
Q1 2015
Shares 8,332 Value ($000) $108 Avg Close — Range —
Q4 2014
Shares 7,807 Value ($000) $191 Avg Close — Range —