GRAN TIERRA ENERGY INC

CUSIP: 38500T101 Class: COM

Boston Partners's Holding History (CIK: 0001386060)

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

Q2 2015
Shares 323,629 Value ($000) $964 Avg Close — Range —
Q1 2015
Shares 716,852 Value ($000) $1,957 Avg Close — Range —
Q4 2014
Shares 580,334 Value ($000) $2,234 Avg Close — Range —
Q3 2014
Shares 580,334 Value ($000) $3,215 Avg Close — Range —