| 1301 | MARY WILSON 10-3H | Roosevelt County, MT | Oil & Gas Property | Jul 2025 |
| 1302 | MASON | Roosevelt County, MT | Oil Property | Mar 1994 |
| 1303 | MATADOR | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1304 | MATADOR FEDERAL 2658 43-7H | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1305 | MATHER | Glacier County, MT | Gas Property | Jul 2025 |
| 1306 | MATTHEW 1-31H | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1307 | MAUGHAN | Toole County, MT | Oil Property | Oct 1992 |
| 1308 | MAVENCAMP | Phillips County, MT | Gas Property | Jul 2025 |
| 1309 | MAYSON PHOENIX 17-20 | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1310 | MCALPINE | Glacier County, MT | Oil Property | Jul 2025 |
| 1311 | MCALPINE | Toole County, MT | Gas Property | Jul 2025 |
| 1312 | MCCABE | Roosevelt County, MT | Oil & Gas Property | Jul 2025 |
| 1313 | MCCARTER | Toole County, MT | Gas Property | May 2025 |
| 1314 | MCCORMICK | Toole County, MT | Oil Property | Nov 2001 |
| 1315 | MCCRACKEN | Pondera County, MT | Gas Property | Oct 2024 |
| 1316 | MCCRACKEN 2758 | Roosevelt County, MT | Oil & Gas Property | Jul 2025 |
| 1317 | MCCUTCHEON | Toole County, MT | Oil & Gas Property | May 2025 |
| 1318 | MCCUTCHIN-WILLIAMS 2 | Powder River County, MT | Oil & Gas Property | Jul 2025 |
| 1319 | MCDONALD CREEK | Petroleum County, MT | Oil Property | Mar 2004 |
| 1320 | MCDONOUGH | Toole County, MT | Gas Property | May 2025 |
| 1321 | MCDOWELL | Liberty County, MT | Oil Property | Jul 2025 |
| 1322 | MCFARLAND | Pondera County, MT | Gas Property | Feb 2025 |
| 1323 | MCGINNIS | Richland County, MT | Oil & Gas Property | Jun 2025 |
| 1324 | MCGOWAN | Roosevelt County, MT | Oil Property | Nov 2024 |
| 1325 | MCGREGOR-NADEAU | Toole County, MT | Gas Property | Apr 2025 |
| 1326 | MCGUINNESS | Glacier County, MT | Oil & Gas Property | Jul 2025 |
| 1327 | MCHALE-SCHILTZ | Toole County, MT | Oil & Gas Property | Oct 2024 |
| 1328 | MCHENRY | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1329 | MCINTOSH | Hill County, MT | Gas Property | Apr 2007 |
| 1330 | MCKECHNIE | Toole County, MT | Gas Property | Mar 2025 |
| 1331 | MCKEE | Toole County, MT | Oil Property | Jul 2025 |
| 1332 | MCKEE | Toole County, MT | Oil Property | Jul 2019 |
| 1333 | MCKEE | Toole County, MT | Oil & Gas Property | Dec 2002 |
| 1334 | MCKINNON | Sheridan County, MT | Oil & Gas Property | May 2022 |
| 1335 | MCLEISH 1 | Blaine County, MT | Gas Property | Jul 2025 |
| 1336 | MCMANUS | Toole County, MT | Oil & Gas Property | Jul 2025 |
| 1337 | MCNAMER | Toole County, MT | Gas Property | May 2025 |
| 1338 | MCNAMER | Toole County, MT | Oil Property | Oct 1995 |
| 1339 | MCQUIGG | Liberty County, MT | Gas Property | Jun 2025 |
| 1340 | MCSLOY | Hill County, MT | Gas Property | Jul 2025 |
| 1341 | MCVAY | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1342 | MEAGHER 16-30 | Sheridan County, MT | Oil & Gas Property | Jul 2025 |
| 1343 | MEINS | Stillwater County, MT | Gas Property | Apr 2024 |
| 1344 | MEISSNER | Liberty County, MT | Gas Property | Jun 2025 |
| 1345 | MEISSNER | Liberty County, MT | Oil & Gas Property | Jul 2025 |
| 1346 | MELBY | Sheridan County, MT | Oil & Gas Property | Jul 2025 |
| 1347 | MELBY | Sheridan County, MT | Oil & Gas Property | Jul 2025 |
| 1348 | MELDAHL | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1349 | MELVIN | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1350 | MERCER | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1351 | MERRILL | Richland County, MT | Oil & Gas Property | Jun 2025 |
| 1352 | MERRITT | Fallon County, MT | Oil & Gas Property | Jul 2025 |
| 1353 | MESA-FE | Rosebud County, MT | Oil & Gas Property | Dec 2024 |
| 1354 | METZGER | Hill County, MT | Gas Property | Jul 2025 |
| 1355 | MEULI | Pondera County, MT | Gas Property | Oct 2024 |
| 1356 | MICHAEL 1-27 H | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1357 | MICHAELS | Glacier County, MT | Gas Property | Jul 2025 |
| 1358 | MICHELS | Wibaux County, MT | Oil & Gas Property | Jul 2025 |
| 1359 | MIDLAND | Glacier County, MT | Gas Property | Apr 2025 |
| 1360 | MIDLAND | Toole County, MT | Oil Property | Jul 2025 |
| 1361 | MIDLAND REALTY | Toole County, MT | Gas Property | Jul 2025 |
| 1362 | MILES | Toole County, MT | Oil Property | Oct 2021 |
| 1363 | MILES | Liberty County, MT | Gas Property | Jul 2025 |
| 1364 | MILLER | Sheridan County, MT | Oil & Gas Property | May 2019 |
| 1365 | MILLER | Toole County, MT | Gas Property | Jul 2025 |
| 1366 | MILLER | Glacier County, MT | Oil Property | Jul 2025 |
| 1367 | MILLER | Stillwater County, MT | Gas Property | Apr 1992 |
| 1368 | MILLER | Richland County, MT | Oil & Gas Property | Mar 2015 |
| 1369 | MILLER GIRLS FEDERAL 2758 42-7H | Roosevelt County, MT | Oil & Gas Property | Jul 2025 |
| 1370 | MLFU | Phillips County, MT | Gas Property | Apr 2019 |
| 1371 | MOE 1 | Toole County, MT | Oil Property | Jul 2023 |
| 1372 | MOFFAT | Toole County, MT | Gas Property | Jul 2025 |
| 1373 | MOFFATT | Toole County, MT | Gas Property | Apr 2025 |
| 1374 | MOFFATT | Toole County, MT | Gas Property | Jul 1991 |
| 1375 | MONARCH | Fallon County, MT | Oil & Gas Property | Dec 2011 |
| 1376 | MONARCH | Fallon County, MT | Oil & Gas Property | Jul 2025 |
| 1377 | MONDAK WEST FED 1 | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1378 | MONDALIN | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1379 | MONSON | Toole County, MT | Oil & Gas Property | Jun 2025 |
| 1380 | MONTANA A | Pondera County, MT | Oil Property | Jun 2025 |
| 1381 | MONTANA F | Musselshell County, MT | Oil & Gas Property | Jan 2003 |
| 1382 | MOORE | Blaine County, MT | Gas Property | Jul 2025 |
| 1383 | MOORE | Blaine County, MT | Gas Property | Jul 2025 |
| 1384 | MOORE | Blaine County, MT | Gas Property | Jul 2025 |
| 1385 | MOORE (23-24 | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1386 | MOOSE FALLS 29-31H | Richland County, MT | Oil Property | Jul 2025 |
| 1387 | MORASKO 41-25H 43 | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1388 | MORGAN ( | Glacier County, MT | Gas Property | Jul 2025 |
| 1389 | MORGAN 3 | Blaine County, MT | Gas Property | May 2017 |
| 1390 | MORKEN | Sheridan County, MT | Oil & Gas Property | Jul 2025 |
| 1391 | MORRIS | Musselshell County, MT | Oil Property | Aug 1993 |
| 1392 | MORRIS | Toole County, MT | Gas Property | May 2025 |
| 1393 | MORRIS | Teton County, MT | Oil Property | Jul 2025 |
| 1394 | MORSE | Hill County, MT | Gas Property | Jul 2025 |
| 1395 | MORSE | Hill County, MT | Gas Property | Jul 2025 |
| 1396 | MORTON | Toole County, MT | Oil & Gas Property | Jul 2025 |
| 1397 | MOSQUITO | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1398 | MOSSER | Yellowstone County, MT | Oil Property | Jul 2025 |
| 1399 | MOTT 1-16H | Richland County, MT | Oil & Gas Property | Jul 2025 |
| 1400 | MOULTON | Toole County, MT | Oil & Gas Property | Jul 2025 |