| 3301 | Larkin Energy Company Inc | Sasakwa, OK 74867 | Oil & Gas Operator | May 2022 |
| 3302 | Larkin Oil Co | Sasakwa, OK 74867 | Oil & Gas Operator | Aug 2015 |
| 3303 | Larkspur Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Feb 2026 |
| 3304 | Larmore Jr James E | Bartlesville, OK 74006-8312 | Oil Operator | Mar 2017 |
| 3305 | Larron Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2015 |
| 3306 | Larry Brown Dba Brown Oil Company | Ardmore, OK 73401 | Oil Operator | Apr 2015 |
| 3307 | Larry Sherman Oil LLC | Chandler, OK 74834 | Oil & Gas Operator | Dec 2025 |
| 3308 | Larry Wolff Dba Wolff'S Oilfield Service | Cushing, OK 74023-9789 | Oil & Gas Operator | Jan 2026 |
| 3309 | Larson Exploration Company | Tulsa, OK 74136-4939 | Oil & Gas Operator | Jul 2016 |
| 3310 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 3311 | Las Colinas Oil Corp. | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 3312 | Lashley Oil Company Inc | Walters, OK 73572 | Oil Operator | Dec 2014 |
| 3313 | Lasmo Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 3314 | Last Run, LLC | Rillito, AZ 85246 | Oil & Gas Operator | May 2020 |
| 3315 | Latex Petroleum Corp. | Houston, TX 77090 | Oil & Gas Operator | Aug 2012 |
| 3316 | Latham Roger P C | Dallas, TX 75244 | Oil Operator | Apr 2015 |
| 3317 | Latigo Drilling Corporation | Duncan, OK 73533 | Oil & Gas Operator | Feb 2026 |
| 3318 | Latigo Oil & Gas, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Feb 2026 |
| 3319 | Latigo Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Jan 2026 |
| 3320 | Latigo Petroleum, LLC | Pampa, TX 79066 | Oil & Gas Operator | May 2026 |
| 3321 | Lauck & Associates | Walnut Creek, CA 91789 | Oil & Gas Operator | Jan 2026 |
| 3322 | Laughlin Jack D | Cushing, OK 74023 | Oil & Gas Operator | Sep 2016 |
| 3323 | Laurco Energies,Inc | | Oil & Gas Operator | May 2025 |
| 3324 | Laurel Operating Company | Stillwater, OK 74074-3025 | Oil & Gas Operator | Feb 2026 |
| 3325 | Laverty, Thomas R | | Oil & Gas Operator | Dec 2023 |
| 3326 | Law E Edward | Newkirk, OK 74647-2056 | Oil Operator | Feb 2026 |
| 3327 | Lawco Exploration Inc | Bentonville, AR 72712 | Oil & Gas Operator | Aug 2024 |
| 3328 | Lawco Holdings LLC | Bentonville, AR 72712 | Oil Operator | Feb 2026 |
| 3329 | Lawrence Hot Oil Service | Loco, OK 73442 | Oil & Gas Operator | Dec 2025 |
| 3330 | Lawrence James Oil Prop Inc | Catoosa, OK 74015 | Oil & Gas Operator | Feb 2012 |
| 3331 | Lawrence Roy Drilling Co Inc | Pawnee, OK 74058-0306 | Oil & Gas Operator | Aug 2000 |
| 3332 | Lawrence, C. F. & Assoc. Inc. | Lubbock, TX 79401 | Oil & Gas Operator | May 2026 |
| 3333 | Lawson George E | Sand Springs, OK 74063 | Oil & Gas Operator | May 2013 |
| 3334 | Layco Oil | Okmulgee, OK 74447-2065 | Oil & Gas Operator | Apr 2020 |
| 3335 | Layton Oil Co | | Oil Operator | Feb 1994 |
| 3336 | LBJ Production Inc | Okmulgee, OK 74447 | Oil Operator | Nov 1998 |
| 3337 | LCB Resources LLC | Kingfisher, OK 73750-2322 | Oil & Gas Operator | Feb 2026 |
| 3338 | Ldo LLC | Skiatook, OK 74070 | Oil Operator | Nov 2025 |
| 3339 | Le Bas Operating Company, Inc. | Giddings, TX 78942 | Oil & Gas Operator | Mar 2000 |
| 3340 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 3341 | Le Norman Partners LLC | Duncan, OK 73533-9523 | Oil & Gas Operator | Feb 2012 |
| 3342 | Leake Keith D | Winfield, KS 67156-8871 | Oil Operator | Apr 2004 |
| 3343 | Leaman Oil Company | Roland, OK 74954 | Oil & Gas Operator | Apr 2014 |
| 3344 | Lear Petroleum Corp | Houston, TX 77210 | Oil & Gas Operator | Mar 2015 |
| 3345 | Lear Petroleum Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Aug 1999 |
| 3346 | Leasehold Management Corp | Oklahoma City, OK 73107 | Oil & Gas Operator | Nov 2024 |
| 3347 | Leatherneck Energy Group Inc | Addison, TX 75001-6025 | Oil & Gas Operator | Apr 2020 |
| 3348 | Leavell Resources Corporation | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 3349 | Ledford Jan Oil & Gas | Duncan, OK 73533-3210 | Oil Operator | Nov 2025 |
| 3350 | Lee Energy Exploration LTD | Oklahoma City, OK 73102-7114 | Oil & Gas Operator | Jul 2008 |
| 3351 | Lee Energy LLC | Edmond, OK 73034-7668 | Oil Operator | Jan 2005 |
| 3352 | Lee Jr W E | Beggs, OK 74421-2683 | Oil & Gas Operator | May 2013 |
| 3353 | Lee Of Tulsa Oil & Gas Inc | Tulsa, OK 74114-5634 | Oil & Gas Operator | Dec 2021 |
| 3354 | Lee Ron | Emory, TX 75440 | Oil Operator | Jul 2025 |
| 3355 | Leed Energy LLC | Purcell, OK 73080-1383 | Oil & Gas Operator | Jan 2026 |
| 3356 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 3357 | Leeman Don J | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 1998 |
| 3358 | Leeman Energy Corporation | Oklahoma City, OK 73118-1802 | Oil & Gas Operator | Mar 2015 |
| 3359 | Lefco Resources LLC | Henryetta, OK 74437 | Gas Operator | Jan 2026 |
| 3360 | Leg Up Operating Company LLC | Tulsa, OK 74135 | Oil Operator | Jan 2026 |
| 3361 | Legacy - M & K Corporation | Dallas, TX 75231-0969 | Oil & Gas Operator | Jan 2025 |
| 3362 | Legacy Energy Services LLC | Stillwater, OK 74074 | Oil & Gas Operator | Feb 2026 |
| 3363 | Legacy Oklahoma Operators LLC | Shawnee, OK 74804-1447 | Oil & Gas Operator | Jan 2026 |
| 3364 | Legacy Petroleum LLC | Tulsa, OK 74135 | Oil & Gas Operator | Feb 2026 |
| 3365 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | May 2026 |
| 3366 | Legado Midcon, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2010 |
| 3367 | Legend Energy Corporation | Stillwater, OK 74074-1721 | Oil & Gas Operator | Aug 2022 |
| 3368 | Leigh Operating Co | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 3369 | Lema Petroleum Inc | Seminole, OK 74868 | Oil & Gas Operator | Jan 2026 |
| 3370 | Lemley Oil Corporation | Sulphur, OK 73086-9316 | Oil & Gas Operator | Aug 2025 |
| 3371 | Lenhart Oil Company | Cashion, OK 73016-0188 | Oil & Gas Operator | Jul 2016 |
| 3372 | Leonard Brothers Operating Co. | Fort Worth, TX 76101 | Oil & Gas Operator | May 2026 |
| 3373 | Leonard Vann | | Oil Operator | Oct 2025 |
| 3374 | Lerblance Jr W P Estate | Hartshorne, OK 74547-0449 | Oil & Gas Operator | Apr 2020 |
| 3375 | Lester Joan | Sand Springs, OK 74063 | Oil & Gas Operator | Feb 2026 |
| 3376 | Levinson Partners Corporation | Denver, CO 80202 | Oil & Gas Operator | Jul 1995 |
| 3377 | Levinson Silvan E | Tulsa, OK 74119 | Oil & Gas Operator | Feb 2012 |
| 3378 | Lewbet Inc | Perry, OK 73077 | Oil & Gas Operator | Aug 2024 |
| 3379 | Lewis A. Hembree Production Company | Shawnee, OK 74801 | Oil & Gas Operator | Jan 2026 |
| 3380 | Lewis Energy LLC | Tulsa, OK 74159 | Oil Operator | Feb 2026 |
| 3381 | Lewis J K | Duncan, OK 73534-1742 | Oil & Gas Operator | Apr 2015 |
| 3382 | Lewis James D Oil Company | Healdton, OK 73438 | Oil Operator | Jan 2026 |
| 3383 | Lewis John L Well Service | Sasakwa, OK 74867 | Oil Operator | May 2013 |
| 3384 | Lewis Oil And Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |
| 3385 | Lewis Oil Corp. | Stillwater, OK 74076 | Oil & Gas Operator | Jan 2026 |
| 3386 | Lewis Oil Operations LLC | Ratliff City, OK 73481 | Oil & Gas Operator | Jan 2026 |
| 3387 | Lewis Operating Company | Holliday, TX 76366 | Oil & Gas Operator | May 2026 |
| 3388 | Lewis Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jul 1995 |
| 3389 | Lewis, R. J. Oil Company | Stillwater, OK 74076 | Oil & Gas Operator | Apr 2014 |
| 3390 | Liberty Operating Inc | Norman, OK 73069-8225 | Oil & Gas Operator | Dec 2024 |
| 3391 | Lightner Harry A | | Oil & Gas Operator | May 2013 |
| 3392 | Likins-Foster Honolulu Corp | Foster City, CA 94404 | Oil & Gas Operator | Feb 2015 |
| 3393 | Lil Dab Petroleum Inc | Ringling, OK 73456 | Oil Operator | Dec 2025 |
| 3394 | Lil-Mor Oil Company | Tulsa, OK 74105 | Oil Operator | Dec 2000 |
| 3395 | Lillard Pipe & Supply Inc | Shawnee, OK 74802-0847 | Oil & Gas Operator | Nov 2014 |
| 3396 | Lime Rock Resources A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 3397 | Lime Rock Resources II-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2026 |
| 3398 | Lime Rock Resources III-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2026 |
| 3399 | Lime Rock Resources IV-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | May 2026 |
| 3400 | Limestone Exploration II, LLC | Midland, TX 79704 | Oil & Gas Operator | Jun 2019 |