| 101 | Mead Oil LLC | | Oil & Gas Operator | Dec 2025 |
| 102 | Medina Res Dev Co LLC | | Oil & Gas Operator | May 2026 |
| 103 | Missing Moon Oil Inc | Knox, PA 16232-4507 | Oil & Gas Operator | Dec 2025 |
| 104 | Mitch Well Energy Inc | | Oil & Gas Operator | Dec 2012 |
| 105 | Monroe Res LTD | Fairport, NY 14450-3218 | Gas Operator | Dec 2004 |
| 106 | Natl Fuel Gas Supply Corp | Williamsville, NY 14221-5887 | Oil & Gas Operator | Dec 2009 |
| 107 | Nea Cross Inc | | Gas Operator | Dec 1991 |
| 108 | Norbert J Baumgart | | Oil & Gas Operator | Dec 2009 |
| 109 | Nornew Inc | Houston, TX 77063-2140 | Oil & Gas Operator | Dec 2008 |
| 110 | Nucomer Energy LLC | Erie, PA 16510 | Oil & Gas Operator | May 2026 |
| 111 | Old MTN Gas Co Inc | Pleasantville, PA 16341-0329 | Oil & Gas Operator | Dec 2020 |
| 112 | Open Flow Gas Supply Corp | | Oil & Gas Operator | Dec 2025 |
| 113 | Otter Exploration Inc | Warren, PA 16365-9689 | Oil & Gas Operator | Dec 2021 |
| 114 | Ows Acquisition Co LLC | Louisville, OH 44641 | Oil & Gas Operator | Dec 2025 |
| 115 | Ows Energy LLC | Carlton, PA 16311-1605 | Oil & Gas Operator | Jun 2026 |
| 116 | Oz Gas LTD | Tidioute, PA 16351-2648 | Oil & Gas Operator | Dec 2016 |
| 117 | Pa Gen Energy Co LLC | Warren, PA 16365-2510 | Oil & Gas Operator | Jun 2026 |
| 118 | Pa Gen Energy Corp | Warren, PA 16365-2510 | Oil & Gas Operator | Dec 2002 |
| 119 | Pennfield Energy LLC | Erie, PA 16510-4760 | Oil & Gas Operator | Dec 2021 |
| 120 | Pennhills Resources LLC | MT. Jewett, PA 16740 | Oil & Gas Operator | Jun 2026 |
| 121 | Pennzoil Prod Co | | Oil & Gas Operator | Dec 2000 |
| 122 | Petro Ventures Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2019 |
| 123 | Phoenix Energy LLC | Warren, PA 16365-2302 | Oil & Gas Operator | Dec 2025 |
| 124 | Pierce & Petersen | | Oil & Gas Operator | Dec 2025 |
| 125 | Pierce James E | Warren, PA 16365-0627 | Oil & Gas Operator | Dec 2011 |
| 126 | Pine Ridge Energy | Sugar Grove, PA 16350-6934 | Oil & Gas Operator | Dec 2025 |
| 127 | Pine Valley Resources Inc | West Seneca, NY 14224-2244 | Oil & Gas Operator | Dec 1991 |
| 128 | Pleasant Oil & Gas | Clarendon, PA 16313-4532 | Oil & Gas Operator | Dec 2025 |
| 129 | PPP Future Dev Inc | Alexander, NY 14005 | Oil & Gas Operator | Dec 2025 |
| 130 | Puma Energy Inc | | Gas Operator | Dec 1999 |
| 131 | Quaker State Corporation | Houston, TX 77002-2806 | Oil & Gas Operator | Dec 2013 |
| 132 | R & N Resources LLC | Bear Lake, PA 16402-2926 | Oil & Gas Operator | Dec 2025 |
| 133 | R Joseph & Shelby J Maney | Warren, PA 16365-3670 | Oil & Gas Operator | Dec 2025 |
| 134 | Range Opr Co | | Oil & Gas Operator | Dec 1999 |
| 135 | Range Resources Appalachia LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Jun 2026 |
| 136 | RC Southwell Oil LLC | Warren, PA 16365-3686 | Oil & Gas Operator | Dec 2025 |
| 137 | Re Gas Dev LLC | State College, PA 16801-7085 | Oil & Gas Operator | Sep 2018 |
| 138 | Resource Energy Inc | Uniontown, OH 44685 | Gas Operator | Dec 2007 |
| 139 | Rex Energy Operating Corp. | State College, PA 16801 | Oil & Gas Operator | Jun 2012 |
| 140 | Rhoades Oil Co | Tulsa, OK 74136-5575 | Oil & Gas Operator | Aug 2013 |
| 141 | Richard H Burkland | Lemont Furnace, PA 15456-0073 | Oil & Gas Operator | Dec 2012 |
| 142 | Rick & Sons Oil LLC | Warren, PA 16365-3561 | Oil & Gas Operator | Dec 2025 |
| 143 | Ristau Ricky J | Warren, PA 16365-3560 | Oil & Gas Operator | Dec 2025 |
| 144 | Roger K Dunham | Sheffield, PA 16347-0145 | Oil Operator | Dec 2016 |
| 145 | Roulette Oil & Gas LLC | Shinglehouse, PA 16748-3406 | Oil & Gas Operator | Jun 2026 |
| 146 | Russ Holden Well SVC | Sheffield, PA 16347-2904 | Oil & Gas Operator | Dec 2025 |
| 147 | S & T SVC & Supply Inc | Pleasantville, PA 16341-2817 | Oil & Gas Operator | Dec 2025 |
| 148 | Schreiner Oil & Gas Inc | Prescott, AZ 86303 | Oil & Gas Operator | Dec 2023 |
| 149 | Seneca Resources Co LLC | Cranberry Township, PA 16066 | Oil & Gas Operator | Jun 2026 |
| 150 | September Corp | Titusville, PA 16354-6833 | Oil & Gas Operator | Dec 2025 |
| 151 | Shelex Drilling Inc | Lexington, KY 40523 | Oil & Gas Operator | Dec 2025 |
| 152 | SLT Production LLC | Sheffield, PA 16347-0547 | Oil & Gas Operator | Dec 2025 |
| 153 | Snyder Bros Inc | Kittanning, PA 16201 | Oil & Gas Operator | Jun 2026 |
| 154 | Somerset Oil & Gas Company | Portland, TX 78374 | Oil & Gas Operator | Dec 2006 |
| 155 | Southwell Russell C | Warren, PA 16365-3686 | Oil & Gas Operator | Dec 2022 |
| 156 | Southwell William R | Warren, PA 16365-1259 | Oil & Gas Operator | Dec 2017 |
| 157 | Stedman Energy Inc | Chautauqua, NY 14722 | Oil & Gas Operator | Dec 2025 |
| 158 | Sterling Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2015 |
| 159 | Stonehaven Energy MGT Co LLC | | Oil & Gas Operator | Dec 2019 |
| 160 | Stryker Energy LLC | Mayfield VIllag, OH 44143 | Oil & Gas Operator | Dec 2018 |
| 161 | Sullivan & Clark | Youngsville, PA 16371-0194 | Oil & Gas Operator | Dec 1998 |
| 162 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 163 | Sylvan Energy, LLC | Pittsburgh, PA 15211 | Oil & Gas Operator | Sep 2026 |
| 164 | Synd Enterprises Inc | Lakewood, NY 14750-9613 | Oil & Gas Operator | Dec 2006 |
| 165 | Tachoir Resources Inc | | Oil & Gas Operator | Dec 2025 |
| 166 | Tatonka Oil Co LLC | Columbus, OH 43201-3684 | Oil & Gas Operator | Dec 2025 |
| 167 | Terry D Coan | Youngsville, PA 16371-3608 | Oil & Gas Operator | Dec 2021 |
| 168 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 169 | Timberline Energy Inc | Franklin, PA 16323-0269 | Oil & Gas Operator | Dec 2025 |
| 170 | Titusville Oil & Gas Assoc Inc | Pleasantville, PA 16341-1705 | Oil Operator | Dec 2025 |
| 171 | TNT Oil Co. | Hamlin, TX 79520 | Oil & Gas Operator | Sep 2026 |
| 172 | Trimont Energy LLC | Pittsburgh, PA 15211-1205 | Oil & Gas Operator | Dec 2016 |
| 173 | Trinity Energy Corp | Gibsonia, PA 15044-9106 | Oil & Gas Operator | Dec 2007 |
| 174 | Trinity Mineral Partners LLC | Pittsburgh, PA 15238-2718 | Oil & Gas Operator | Dec 2025 |
| 175 | Universal Resources Holdings Inc | Dunkirk, NY 14048 | Oil & Gas Operator | Dec 2025 |
| 176 | Us Energy Dev Corp | Getzville, NY 14068-1558 | Oil & Gas Operator | Dec 2021 |
| 177 | Us Energy Exploration Corp | Rural Valley, PA 16249 | Oil & Gas Operator | May 2026 |
| 178 | Vanderhoof Energy Prod LLC | Russell, PA 16345 | Oil & Gas Operator | Dec 2025 |
| 179 | Vineyard Oil & Gas Co | North East, PA 16428 | Oil & Gas Operator | Dec 2023 |
| 180 | Waste TRMT Corp | Washington, PA 15301-0558 | Oil & Gas Operator | Dec 2024 |
| 181 | Weldbank Energy Corp | Warren, PA 16365-5114 | Oil & Gas Operator | Dec 2025 |
| 182 | Werner Oil Farm | | Oil & Gas Operator | Dec 2025 |
| 183 | Whilton Brooks | | Oil & Gas Operator | Dec 2025 |
| 184 | Wilkes Energy Inc | Akron, OH 44308 | Oil & Gas Operator | Dec 2022 |
| 185 | William M Mauersberg | Sigel, PA 15860-2402 | Oil & Gas Operator | Dec 2025 |
| 186 | William Southwell & Son Oil LLC | Warren, PA 16365 | Oil & Gas Operator | Dec 2025 |
| 187 | Wilmoth Interests, Inc. | Marion Center, PA 15759 | Oil & Gas Operator | May 2026 |
| 188 | Yeagle George W | Warren, PA 16365-0924 | Oil Operator | Dec 2010 |