| 1 | C & C Producing LLC | Creston, OH 44217 | Oil & Gas Operator | Dec 2024 |
| 2 | C & D Oil & Gas LLC | Dorset, OH 44032 | Oil & Gas Operator | Dec 2024 |
| 3 | C & N Oil & Gas Company | Albany, OH 45710 | Oil & Gas Operator | Dec 2012 |
| 4 | C & S Energy Corp | Liverpool, NY 13088 | Oil & Gas Operator | Dec 1986 |
| 5 | C & T Energy Of East Canton Inc | East Canton, OH 44730 | Oil & Gas Operator | Dec 2024 |
| 6 | C & V Oil And Gas | Marietta, OH 45750 | Oil & Gas Operator | Dec 2011 |
| 7 | C G O Inc | Wheeling, WV 26003 | Oil & Gas Operator | Dec 2024 |
| 8 | C T R Resources Inc | Alliance, OH 44601 | Oil & Gas Operator | Dec 2013 |
| 9 | Ca-Dora Inc | Waterford, OH 45786 | Oil & Gas Operator | Dec 1984 |
| 10 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Aug 2025 |
| 11 | Callander & Kimbrel Inc | Cerluean, KY 42215 | Oil & Gas Operator | Dec 1989 |
| 12 | Cam Consultants Inc | Akron, OH 44309 | Oil & Gas Operator | Dec 2023 |
| 13 | Cambrian Hunter Inc | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2024 |
| 14 | Cameron & Kincaid | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1986 |
| 15 | Cameron Brothers | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1995 |
| 16 | Cameron Production Co Inc | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2024 |
| 17 | Cameron Properties | Columbus, OH 43220 | Oil & Gas Operator | Dec 1996 |
| 18 | Camphire George E. | Danville, OH 43014 | Oil & Gas Operator | Dec 2024 |
| 19 | Canaan Producing LLC | Burbank, OH 44214 | Oil & Gas Operator | Dec 2024 |
| 20 | Canest, LLC | Lake Oswego, OR 97035 | Gas Operator | Dec 2006 |
| 21 | Canfield Oil & Gas Co | Allentown, PA 18103-9667 | Oil & Gas Operator | Dec 2024 |
| 22 | Capstone Oil Producing LLC | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2024 |
| 23 | Carey Resources Inc | Great Neck, NY 11023 | Oil & Gas Operator | Dec 1988 |
| 24 | Carl E Smith Petroleum Inc | Dallas, TX 75234-6057 | Oil & Gas Operator | Dec 2019 |
| 25 | Carless Resources Inc | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1997 |
| 26 | Carlton Oil Corp | Newport, OH 45768 | Oil & Gas Operator | Dec 2013 |
| 27 | Carper Ruth A& Henthorn Jr W D | Pataskala, OH 43062 | Oil & Gas Operator | Dec 2024 |
| 28 | Carper Well Service Inc. | Reno, OH 45773 | Oil & Gas Operator | Dec 2023 |
| 29 | Carrizo (Utica) LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 30 | Carroll Resources | Loudonville, OH 44842 | Oil & Gas Operator | Dec 1998 |
| 31 | Carter Oil And Gas Inc | Richmond, VA 23219 | Oil & Gas Operator | Dec 2011 |
| 32 | Carter Resources | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2005 |
| 33 | Cascade Petroleum Inc | North Canton, OH 44720-4244 | Oil & Gas Operator | Dec 1992 |
| 34 | Cavendish Petro Of Oh Inc | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1989 |
| 35 | Cedar Valley Energy Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2021 |
| 36 | Cemco Operating Inc | Bartlet, OH 45713 | Oil & Gas Operator | Dec 2005 |
| 37 | Central Energy Co Inc | Newark, OH 43055 | Oil & Gas Operator | Dec 1998 |
| 38 | Central Oil Field Supply | Lancaster, OH 43130 | Oil & Gas Operator | Dec 1991 |
| 39 | Century Well Service | Cumberland, WV 26047 | Oil & Gas Operator | Dec 2006 |
| 40 | Cgas Exploration | Charleston, WV 25301 | Oil & Gas Operator | Dec 2006 |
| 41 | Chamberlain Dba/Old South Oil | Marietta, OH 45750 | Oil & Gas Operator | Dec 2008 |
| 42 | Champion-Park Gas Corporation | Warren, OH 44483 | Oil & Gas Operator | Dec 2023 |
| 43 | Chapman Gary W | MT Perry, OH 43760 | Oil Operator | Dec 2024 |
| 44 | Chesapeake Appalachia, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Sep 2025 |
| 45 | Chesapeake Exploration LLC | Oklahoma City, OK 731540496 | Oil & Gas Operator | Jul 2020 |
| 46 | Chevron Appalachia, LLC | Corapolis, PA 15108 | Oil & Gas Operator | Jul 2020 |
| 47 | Chipper Energy LLC | Magnolia, OH 44643 | Oil & Gas Operator | Dec 2024 |
| 48 | Chris Oil Co | Cambridge, OH 43725 | Oil & Gas Operator | Nov 2008 |
| 49 | Christa Oil Co | Cumberland, OH 43732 | Oil & Gas Operator | Nov 1999 |
| 50 | Christman Rosalie | Woodsfield, OH 43793 | Oil & Gas Operator | Dec 2024 |
| 51 | Chuck Henry Energy LLC | Wellsville, NY 14895 | Oil Operator | Dec 2024 |
| 52 | Chute Ray C | Logan, OH 43138 | Oil & Gas Operator | Dec 2014 |
| 53 | Circleville Gas Co | Westerville, OH 43081 | Oil & Gas Operator | Dec 2004 |
| 54 | Citation Energy Company | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 55 | City Of Akron | Akron, OH 44308 | Oil & Gas Operator | Dec 2024 |
| 56 | City Of Cuyahoga Falls | Cuyahoga Falls, OH 44221 | Oil & Gas Operator | Dec 2024 |
| 57 | Clarence K Tussel Jr LTD | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2024 |
| 58 | Clay Oil & Gas Co | Zanesville, OH 43701 | Oil Operator | Dec 1991 |
| 59 | Clear Creek Oil Co | Nova, OH 44859 | Oil & Gas Operator | Dec 2018 |
| 60 | Cleary Jon C | Lancaster, OH 43130 | Gas Operator | Dec 2022 |
| 61 | Clinton Gas Marketing Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 1988 |
| 62 | Clinton Petroleum Co Inc | Randolph, OH 44265 | Oil & Gas Operator | Dec 2009 |
| 63 | Clymar, Inc | New Lexington, OH 43764 | Oil & Gas Operator | Dec 1996 |
| 64 | CNG Producing Company | New Orleans, LA 70112 | Oil & Gas Operator | Dec 2015 |
| 65 | CNX Gas Company LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Sep 2025 |
| 66 | Coal Gas Transportation LLC | Cadiz, OH 43907 | Gas Operator | Dec 2016 |
| 67 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2025 |
| 68 | Cobra Resources LLC | N Jackson, OH 44451 | Oil & Gas Operator | Dec 2024 |
| 69 | Collins-McGregor Operating Company | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 70 | Columbia Gas Transmission, LLC | Charleston, WV 25314 | Oil & Gas Operator | Dec 2021 |
| 71 | Columbus Oilfield Exploration Company | Columbus, OH 43220 | Oil & Gas Operator | Dec 2013 |
| 72 | Comgas Inc | Hebron, OH 43025-9716 | Oil & Gas Operator | Dec 1988 |
| 73 | Commerce Energy Co | Cleveland, OH 44115 | Oil & Gas Operator | Dec 1987 |
| 74 | Commerce Oil & Gas Co | Rocky River, OH 44116 | Oil & Gas Operator | Dec 1996 |
| 75 | Compro Services Inc | Williamstown, WV 26187 | Oil & Gas Operator | Dec 1985 |
| 76 | Conley Energy Co LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2020 |
| 77 | Connoil LLC | Grove City, OH 43123 | Oil & Gas Operator | Dec 2024 |
| 78 | Consolidated Petrol Corp | Columbus, OH 43215 | Oil & Gas Operator | Dec 1995 |
| 79 | Consolidated Res Of Amer | Cincinnati, OH 45208 | Oil & Gas Operator | Dec 1996 |
| 80 | Consortium Energy LLC | Tallmadge, OH 44278 | Oil & Gas Operator | Dec 2024 |
| 81 | Constitution Investment Co LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 82 | Constitution Petroleum | Salt Lake City, UT 84124-1110 | Oil & Gas Operator | Dec 2008 |
| 83 | Corner Operating Company, Inc | New York, NY 10165 | Oil & Gas Operator | Dec 1999 |
| 84 | Corning Oil Co Inc | Sonora, OH 43785 | Oil & Gas Operator | Dec 2002 |
| 85 | Cortland Energy Co Inc | Worthington, OH 43085 | Oil & Gas Operator | Dec 2024 |
| 86 | Cosgriff Joe | Detroit, MI 48208 | Oil & Gas Operator | Dec 1998 |
| 87 | Coshocton Pipe Co | Columbus, OH 43229 | Oil & Gas Operator | Dec 1989 |
| 88 | Cosper Well/H Cosper | Logan, OH 43138 | Oil & Gas Operator | Dec 1996 |
| 89 | Covenant Oil Company | Houma, LA 70360 | Oil & Gas Operator | Dec 2015 |
| 90 | Creighton Rick D | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2016 |
| 91 | Crest Petroleum | Newark, OH 43055 | Oil & Gas Operator | Nov 1993 |
| 92 | Crissinger Robert A Inc | Strongsville, OH 44136 | Oil & Gas Operator | Dec 2003 |
| 93 | Cruise Energy Inc | Ravenna, OH 44266 | Oil & Gas Operator | Dec 2024 |
| 94 | Csapo Limited | Creston, OH 44217 | Oil & Gas Operator | Dec 2012 |
| 95 | CSD IV Oil LLC | Columbus, OH 43209 | Oil Operator | Dec 2024 |
| 96 | Cumberland Exploration | Cleveland, OH 44111 | Oil & Gas Operator | Dec 1985 |
| 97 | Cur-Ric Petrol & Gas Corp | Las Vegas, NV 89120-4003 | Oil Operator | Dec 1985 |
| 98 | Curry R D Production Co | Memphis, TN 38103 | Oil & Gas Operator | Dec 1986 |
| 99 | Cutter Exploration Inc | Oviedo, FL 32765 | Oil & Gas Operator | Dec 2024 |
| 100 | Cutter Oil Company | West Salem, OH 44287 | Oil & Gas Operator | Dec 2018 |