| Symbol | Name | Country | Exchange |
|---|---|---|---|
| CETEF | Cathedral Energy Svc | US | OTC |
| WFTUF | Weatherford International Plc Warrants[13/12/202 | US | OTC |
| PTH | Primetech SA | PL | WAR |
| 0WE | WEATHERFORD INTL DL -001 | DE | F |
| 5M8 | Mammoth Energy Services Inc | DE | F |
| KX4A | KLX Energy Services Holdings Inc | DE | F |
| PE1 | Patterson-UTI Energy Inc | DE | F |
| ESI | Ensign Energy Services Inc | CA | TO |