GRAN TIERRA ENERGY INC

CUSIP: 38500T101 Class: COM

CENTRAL TRUST Co's Holding History (CIK: 0000044365)

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

Q3 2015
Shares 2,321 Value ($000) $5 Avg Close — Range —
Q2 2015
Shares 2,321 Value ($000) $7 Avg Close — Range —
Q1 2015
Shares 2,321 Value ($000) $6 Avg Close — Range —
Q4 2014
Shares 3,217 Value ($000) $12 Avg Close — Range —
Q3 2014
Shares 3,440 Value ($000) $19 Avg Close — Range —
Q2 2014
Shares 3,450 Value ($000) $28 Avg Close — Range —
Q1 2014
Shares 3,450 Value ($000) $26 Avg Close — Range —
Q4 2013
Shares 2,022 Value ($000) $15 Avg Close — Range —