GULFMARK OFFSHORE INC

CUSIP: 402629505 Class: COM

Calamos Advisors LLC's Holding History (CIK: 0001316507)

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

Q3 2018
Shares 31,716 Value ($000) $1,183 Avg Close — Range —
Q2 2018
Shares 44,916 Value ($000) $1,505 Avg Close — Range —
Q1 2018
Shares 134,106 Value ($000) $3,890 Avg Close — Range —
Q4 2017
Shares 144,113 Value ($000) $4,106 Avg Close — Range —