| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| MAXWELL ASSOCIATES LTD | Business | 122000555 | CHICAGO | CLOSED | Verify |
| MAXX LOCKSMITH & SECURITY CO | Business | 192000316 | CHICAGO | ACTIVE | Verify |
| MAYO BROTHERS | Business | 122000399 | CHICAGO | NOT RENEWED | Verify |
| MAYO BROTHERS | Business | 117000457 | CHICAGO | NOT RENEWED | Verify |
| MAYWOOD PARK TROTTING ASSN INC | Business | 120000030 | MAYWOOD | NOT RENEWED | Verify |
| MAYWOOD PARK TROTTING ASSOC INC | Business | 120100004 | MELROSE PARK | NOT RENEWED | Verify |
| MAZZONE INVESTIGATION SERVICE INC | Business | 117000394 | PALOS HILLS | NOT RENEWED | Verify |
| MB HALE INC | Business | 117001546 | NAPERVILLE | NOT RENEWED | Verify |
| MBA SECURITY LLC | Business | 122001222 | WESTCHESTER | NOT RENEWED | Verify |
| MBN SECURITY SYSTEMS | Business | 127000936 | MORRIS | NOT RENEWED | Verify |
| MBT SOLUTIONS INC | Business | 127001634 | ARLINGTON HEIGHTS | ACTIVE | Verify |
| MCCARTHY BYRNES PLLC | Business | 122001576 | CHICAGO | ACTIVE | Verify |
| MCCARTHY BYRNES PLLC | Business | 117001890 | CHICAGO | ACTIVE | Verify |
| MCCASTER & ASSOCIATES | Business | 122001019 | CHICAGO | NOT RENEWED | Verify |
| MCCASTER & ASSOCIATES SECURITY SERVICES LLC | Business | 117001553 | CHICAGO | NOT RENEWED | Verify |
| MCCOY BROWN AND ASSOCIATES | Business | 122001131 | CHICAGO | INOPERATIVE | Verify |
| MCCOY SECURITY INC | Business | 123000241 | SCHILLER PARK | NOT RENEWED | Verify |
| MCCOY SECURITY INC | Business | 122000422 | CHICAGO | NOT RENEWED | Verify |
| MCCOY SERVICES INC | Business | 117000485 | CHICAGO | NOT RENEWED | Verify |
| MCCOY'S INVESTIGATIVE & SECURITY SERVS | Business | 122000093 | HANOVER PARK | NOT RENEWED | Verify |
| MCCOY'S INVESTIGATIVE AND SECURITY SERV | Business | 127000023 | HANOVER PARK | NOT RENEWED | Verify |
| MCCOYS INVESTIGATIVE | Business | 117000109 | HANOVER PARK | NOT RENEWED | Verify |
| MCDANE ASSOCIATES LTD | Business | 117000649 | CHICAGO | NOT RENEWED | Verify |
| MCDANIEL FIRE SYSTEMS LLC | Business | 128000215 | CHAMPAIGN | NOT RENEWED | Verify |
| MCGARRAHAN INVESTIGATIVE GROUP LLC | Business | 117001467 | CHICAGO | NOT RENEWED | Verify |
| MCGRAW ENTERPRISES INC | Business | 120100081 | SPRINGFIELD | NOT RENEWED | Verify |
| MCGREGORR-MCGREGORR INC | Business | 117000766 | SPRINGFIELD | NOT RENEWED | Verify |
| MCGUFFEY DETECTIVE AGCY | Business | 118000011 | WAUKEGAN | CANCELLED | Verify |
| MCGUFFEY DETECTIVE AGCY | Business | 122000058 | GLENDALE HEIGHTS | CANCELLED | Verify |
| MCGUFFEY DETECTIVE AGCY | Business | 117000295 | GLENDALE HEIGHTS | NOT RENEWED | Verify |
| MCGUFFEY DETECTIVE AGCY | Business | 201000212 | WOODSTOCK | ACTIVE | Verify |
| MCGUFFEY DETECTIVE AGENCY | Business | 102000015 | HANOVER PARK | ACTIVE | Verify |
| MCHC-SHARED SERVICES INC | Business | 262000050 | CHICAGO | CLOSED | Verify |
| MCHENRY COMBAT ACADEMY | Business | 102000312 | MCHENRY | ACTIVE | Verify |
| MCHENRY COUNTY COLLEGE | Business | 201000223 | CRYSTAL LAKE | ACTIVE | Verify |
| MCHENRY COUNTY COLLEGE | Business | 102000142 | CRYSTAL LAKE | ACTIVE | Verify |
| MCILVAINE ELECTRONICS INC | Business | 127000471 | ST CHARLES | NOT RENEWED | Verify |
| MCJOHNSON INCORPORATED | Business | 127000871 | GREENVILLE | NOT RENEWED | Verify |
| MCJOHNSON INCORPORATED | Business | 127000286 | VANDALIA | NOT RENEWED | Verify |
| MCKENDREE COLLEGE | Business | 102000079 | LEBANON | ACTIVE | Verify |
| MCTOY DIAGNOSTICS, PLLC | Business | 262000185 | HOMEWOOD | ACTIVE | Verify |
| MCWILLIAMS ELECTRIC COMPANY INC | Business | 127000129 | SCHAUMBURG | NOT RENEWED | Verify |
| MDB ELECTRIC INC | Business | 127001261 | TROY | ACTIVE | Verify |
| MDI SECURITY PLLC | Business | 127001788 | MONEE | ACTIVE | Verify |
| MDI SERVICES INC. | Business | 127001740 | BRADLEY | NOT RENEWED | Verify |
| MDS INVESTIGATIONS INC | Business | 117000870 | MCHENRY | NOT RENEWED | Verify |
| MDS INVESTIGATIONS INC | Business | 118000178 | DUQUOIN | NOT RENEWED | Verify |
| MEADE ELECTRIC CO INC | Business | 127000659 | WILLOWBROOK | ACTIVE | Verify |
| MEADOR INVESTIGATIONS | Business | 118000250 | MOLINE | NOT RENEWED | Verify |
| MEADOR INVESTIGATIONS | Business | 118000260 | LINCOLN | NOT RENEWED | Verify |