| 1 | Y D F Inc | Oklahoma City, OK 73128 | Oil & Gas Operator | May 2026 |
| 2 | Y Oil Company Inc. | Cameron, TX 76520 | Oil & Gas Operator | Aug 2026 |
| 3 | Yager Company | Hutchinson, KS 67502 | Oil & Gas Operator | Dec 2000 |
| 4 | Yale Oil Association | Oklahoma City, OK 73105 | Gas Operator | Oct 2013 |
| 5 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | May 2026 |
| 6 | Yanahosa, Inc. | Kountze, TX 77625 | Oil Operator | Aug 2026 |
| 7 | Yarberry Oil Company | Wichita Falls, TX 76308-5120 | Oil & Gas Operator | Apr 2015 |
| 8 | Yarberry Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Aug 2026 |
| 9 | Yarberry, E. E. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2015 |
| 10 | Yarborough Oil & Gas L.P. | Midland, TX 79701 | Oil & Gas Operator | Oct 2000 |
| 11 | Yarborough, W. B. | Midland, TX 79701 | Oil & Gas Operator | Nov 1995 |
| 12 | Yarbrough Oil LP | Eunice, NM 88231 | Oil & Gas Operator | Sep 2025 |
| 13 | Yarbrough R E | Lago VIsta, TX 78645-0005 | Oil & Gas Operator | Mar 2015 |
| 14 | Yarhola Production Company | Drumright, OK 74030 | Oil & Gas Operator | Apr 2026 |
| 15 | Yasny Corporation | | Oil Operator | Nov 1991 |
| 16 | Yates Drilling Co & Myco Industrial Inc | Artesia, NM 88210 | Oil & Gas Operator | Dec 1993 |
| 17 | Yates Drilling Company | Artesia, NM 88210 | Oil & Gas Operator | Dec 2021 |
| 18 | Yates Energy Corporation | Roswell, NM 88202 | Oil & Gas Operator | Aug 2026 |
| 19 | Yates Industries, LLC | Santa Fe, NM 87501 | Oil & Gas Operator | Jun 2026 |
| 20 | Yates Oil & Gas Company | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 21 | Yates Oil Company | | Oil Operator | Jul 1990 |
| 22 | Yates, Earl R | | Oil Operator | Mar 2015 |
| 23 | Yates, Harvey E. Company | Roswell, NM 88201 | Oil & Gas Operator | Dec 2002 |
| 24 | Yeagle George W | Warren, PA 16365-0924 | Oil Operator | Dec 2010 |
| 25 | Yearout, Dwain L. | South Haven, KS 67140 | Oil Operator | Nov 2025 |
| 26 | Yeates Development Corporation | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 27 | Yeates, F. L. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 1997 |
| 28 | Yegen E C | Casper, WY 82604 | Oil & Gas Operator | Mar 2015 |
| 29 | Yei Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 1988 |
| 30 | Yellow Creek Operating, LLC | | Oil & Gas Operator | Jun 2026 |
| 31 | Yellow Dog Oil Company | | Oil Operator | Apr 1988 |
| 32 | Yellow Rock, LLC | | Oil & Gas Operator | Dec 2024 |
| 33 | Yellow Rose Oil & Gas Oper. Inc. | Cisco, TX 76437 | Oil & Gas Operator | Aug 2026 |
| 34 | Yellow Rose Oil & Gas Operating | Cisco, TX 76437 | Oil & Gas Operator | Jan 1996 |
| 35 | Yellowbird Energy LLC | Canonsburgh, PA 15317 | Gas Operator | Dec 2025 |
| 36 | Yellowstone Petroleums Inc. | Canada, 00100 | Oil & Gas Operator | Apr 2026 |
| 37 | Yentzen Investments, Inc. | Sugar Land, TX 77478 | Oil Operator | May 1993 |
| 38 | Yentzen Production, Inc. | | Oil Operator | Mar 1987 |
| 39 | Yep, LLC | Palestine, TX 75802 | Oil Operator | Jan 2017 |
| 40 | Yerby Bill | Ada, OK 74820-5404 | Oil Operator | Jan 2012 |
| 41 | Yeskey, S. Kristine | Frewsburg, NY 14738 | Gas Operator | Dec 2025 |
| 42 | Yeso Energy, Inc. | Roswell, NM 88202 | Oil & Gas Operator | May 2007 |
| 43 | Yet Profits, L.L.C. | Wichita Falls, TX 76308 | Oil Operator | Aug 2026 |
| 44 | Yeti Exploration, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Aug 2026 |
| 45 | Yeubanks Barbara | Cromwell, OK 74837 | Oil Operator | May 2026 |
| 46 | Yingling Oil, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2000 |
| 47 | Ynew Corporation | Austin, TX 78747 | Oil & Gas Operator | Aug 2026 |
| 48 | Yobel, Inc. | Olney, TX 76374 | Oil & Gas Operator | Aug 2026 |
| 49 | Yocham Harlan E. | Sapulpa, OK 74066 | Oil Operator | Aug 2013 |
| 50 | Yocham Oil And Gas Company | Midland, TX 79702 | Oil & Gas Operator | Aug 2026 |
| 51 | Yocham Oil Company | | Oil Operator | Mar 2026 |
| 52 | Yoder Darrell Dba Double "D" | Dayton, OH 45458 | Oil & Gas Operator | Dec 2015 |
| 53 | Yoder Oil Compan | | Oil Operator | Sep 1988 |
| 54 | Yoder, Alvin G. | Welda, KS 66091 | Oil Operator | Sep 2025 |
| 55 | Yoelin Family Trust | | Oil & Gas Operator | May 2026 |
| 56 | Yontz James | Jerusalem, OH 43747 | Oil & Gas Operator | Dec 2018 |
| 57 | Yordes Energy, LLC | El Campo, TX 77437 | Oil Operator | Aug 2026 |
| 58 | York & Price Petroleum Corp. | San Antonio, TX 78218 | Oil & Gas Operator | Jul 2004 |
| 59 | York E & P, LLC | Boling, TX 77420 | Oil & Gas Operator | Aug 2026 |
| 60 | Yorkshire-Pioneer Central School District | Yorkshire, NY 14173 | Gas Operator | Dec 2025 |
| 61 | Yost & Yost, Inc. | | Oil & Gas Operator | Dec 2020 |
| 62 | Yost Energy Inc | | Oil & Gas Operator | May 2026 |
| 63 | Yost Oil Operati | | Oil Operator | Jul 1990 |
| 64 | Yost Oil Operations, Inc. | Russell, KS 67665 | Oil Operator | May 1999 |
| 65 | Yost Richard D Dba Yost Inc | | Oil Operator | Aug 2024 |
| 66 | Yost, Barbra E | | Oil Operator | Dec 2018 |
| 67 | Yost, M. A. | Russell, KS 67665 | Oil Operator | Aug 1990 |
| 68 | Yotpolis, Joni L. | Clymer, NY 14724 | Gas Operator | Dec 2025 |
| 69 | Yotpolis, Rosemarie | Clymer, NY 14724 | Gas Operator | Dec 2025 |
| 70 | Young H Inc | Edmond, OK 73013 | Oil & Gas Operator | Oct 1993 |
| 71 | Young Marshall R Oil Co | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2011 |
| 72 | Young Oil Corporation | | Oil & Gas Operator | Dec 2019 |
| 73 | Young Petroleum Service, LLC | Wichita, KS 67212 | Oil & Gas Operator | Sep 2023 |
| 74 | Young Resources, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 1999 |
| 75 | Young Tommy Oil Inc | Woodward, OK 73802-0893 | Oil & Gas Operator | Apr 2026 |
| 76 | Young Z Joe | Cement, OK 73017-0600 | Oil & Gas Operator | Mar 2015 |
| 77 | Young Zoral J | Cement, OK 73017 | Oil & Gas Operator | Sep 2000 |
| 78 | Young, Clint Inc. | Graham, TX 76450 | Oil & Gas Operator | Aug 2026 |
| 79 | Young, Harvey L. | Erie, KS 66733 | Oil Operator | Feb 2008 |
| 80 | Young, John H., Inc. | Houston, TX 77027 | Oil & Gas Operator | Aug 2026 |
| 81 | Young, L. M. | Brownwood, TX 76804 | Oil & Gas Operator | Aug 2003 |
| 82 | Youngberg, Brian Lenn | Forestville, NY 14062 | Gas Operator | Dec 2025 |
| 83 | Youngblood Enterprises | | Gas Operator | Dec 1983 |
| 84 | Youngblood Enterprises, Inc. | | Oil & Gas Operator | Jan 1992 |
| 85 | Youngblood J Lee | Dallas, TX 75221 | Oil & Gas Operator | Feb 1996 |
| 86 | Youngblood, C. S. III | Pampa, TX 79065 | Oil & Gas Operator | Dec 2001 |
| 87 | Younger Bernard | | Oil Operator | Nov 1992 |
| 88 | Younger Energy C | | Oil & Gas Operator | Dec 1996 |
| 89 | Younger Energy Company | Wichita, KS 67206 | Oil & Gas Operator | Aug 2026 |
| 90 | Younger Enterprises Inc | Ada, OK 74821-1882 | Oil Operator | Jan 2003 |
| 91 | Yount Foundation Inc | | Oil Operator | Dec 2025 |
| 92 | Yturri, Robert & John | San Antonio, TX 78205 | Oil & Gas Operator | Aug 2003 |
| 93 | Yturria, Frank D. | Brownsville, TX 78520 | Oil & Gas Operator | Mar 2008 |
| 94 | Yucca Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2026 |
| 95 | Yukon Exploration Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Aug 2026 |
| 96 | Yukon Properties LLC | Villa Park, CA 92861 | Oil & Gas Operator | Sep 2017 |
| 97 | Yuma E & P Company, Inc. | Houston, TX 77027 | Oil & Gas Operator | Aug 2026 |
| 98 | Yuma Oil Company | El Dorado, KS 67042 | Oil Operator | Apr 1993 |
| 99 | Yuma Petroleum Company | Houston, TX 77027 | Oil & Gas Operator | Aug 2002 |
| 100 | Yunker Oil Co. | | Oil & Gas Operator | Dec 1986 |