| Symbol | Name | Country | Exchange |
|---|---|---|---|
| DWSN | Dawson Geophysical Company | US | NASDAQ |
| DUG | DUG Technology Ltd | AU | ASX |
| CGGYY | CGG | US | OTC |
| CGPVF | CGG | US | OTC |
| FSEI | First Seismic Corp | US | OTC |
| PLSDF | Pulse Seismic Inc | US | OTC |
| TGSGY | TGS-NOPEC Geophysical Company ASA | US | OTC |
| TXLZF | Tesla Expl Ltd | US | OTC |
| GDGE | CGG SA | DE | F |
| 300767 | Yunnan QuakeSafe Seismic Isolation Technologies Co Ltd Class A | CN | SHE |