GULFMARK OFFSHORE INC

CUSIP: 402629208 Class: COMMON STOCK

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q1 2017
Shares 720,212 Value ($000) $252 Avg Close — Range —
Q4 2016
Shares 1,355,629 Value ($000) $2,372 Avg Close — Range —
Q3 2016
Shares 1,605,833 Value ($000) $2,698 Avg Close — Range —
Q2 2016
Shares 1,814,375 Value ($000) $5,679 Avg Close — Range —
Q1 2016
Shares 1,900,620 Value ($000) $11,726 Avg Close — Range —
Q4 2015
Shares 1,930,321 Value ($000) $9,015 Avg Close — Range —
Q3 2015
Shares 2,068,252 Value ($000) $12,637 Avg Close — Range —
Q2 2015
Shares 2,172,277 Value ($000) $25,199 Avg Close — Range —
Q1 2015
Shares 2,197,423 Value ($000) $28,655 Avg Close — Range —
Q4 2014
Shares 2,221,375 Value ($000) $54,246 Avg Close — Range —
Q3 2014
Shares 2,264,542 Value ($000) $70,996 Avg Close — Range —
Q2 2014
Shares 2,273,735 Value ($000) $102,727 Avg Close — Range —
Q1 2014
Shares 2,223,437 Value ($000) $99,920 Avg Close — Range —
Q4 2013
Shares 2,223,933 Value ($000) $104,813 Avg Close — Range —
Q3 2013
Shares 2,142,379 Value ($000) $109,025 Avg Close — Range —
Q2 2013
Shares 2,088,093 Value ($000) $94,153 Avg Close — Range —