ECOPETROL S A

Ticker: EC CUSIP: 279158109 Class: ADR

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q4 2013
Shares 16,400 Value ($000) $631 Avg Close — Range —
Q2 2013
Shares 16,400 Value ($000) $690 Avg Close — Range —