| 1 | Painted Pegasus Petroleum LLC | | Oil & Gas Operator | Jul 2024 |
| 2 | Paladin Energy Partners LLC | | Oil & Gas Operator | Dec 2006 |
| 3 | Pancanadian Energy Resources Inc | | Oil & Gas Operator | Dec 2004 |
| 4 | Pape Oilfield Service Inc | | Oil & Gas Operator | Jul 2018 |
| 5 | Par Pacific Holdings Inc | | Oil & Gas Operator | Apr 2015 |
| 6 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 7 | PDC Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Jul 2025 |
| 8 | Peterson Energy Operating Inc | | Oil & Gas Operator | Aug 2025 |
| 9 | Petro Operating Company LLC | | Oil & Gas Operator | Jul 2025 |
| 10 | Petro-Canada Resources (USA) Inc | Denver, CO 80202-472 | Oil & Gas Operator | Feb 2010 |
| 11 | Petroshare Corporation | | Oil & Gas Operator | Jan 2024 |
| 12 | Piland Resources | | Oil & Gas Operator | Mar 2022 |
| 13 | Poncho Production Co | | Oil & Gas Operator | Jan 2022 |
| 14 | Pozo Resources, Inc | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 15 | Prima Exploration, Inc. | Denver, CO 80206 | Oil & Gas Operator | Aug 2025 |
| 16 | Private Oil Industries Inc | | Oil & Gas Operator | Feb 2004 |
| 17 | Providence Operating LLC Dba Poco Operating | | Oil & Gas Operator | Jul 2025 |