| Symbol | Name | Country | Exchange |
|---|---|---|---|
| FECCF | Frontera Energy Corp. | US | OTC |
| GASXF | NG Energy International Corp | US | OTC |
| FEC | Frontera Energy Corporation | CA | TSX |
| GTE | Gran Tierra Energy Inc. | CA | TSX |
| NSE | New Stratus Energy Inc | CA | TSXV |
| GTE | Gran Tierra Energy Inc. | UK | LSE |
| GXCN | CGX Energy Inc. | DE | F |