| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| M L WOODS CONSULTANTS AND SECURITY FIRM | Business | 201000086 | CHICAGO | ACTIVE | Verify |
| M S I SECURITY INC | Business | 117000247 | WONDER LAKE | NOT RENEWED | Verify |
| M S I SECURITY INC | Business | 122000297 | WONDER LAKE | NOT RENEWED | Verify |
| M SPINELLO & SON LOCKSMITHS INC | Business | 192000144 | ROCKFORD | ACTIVE | Verify |
| M&S SECURITY SERVICES LLC | Business | 127001345 | BLOOMINGTON | NOT RENEWED | Verify |
| MABMA ENTERPRISES LLC | Business | 102000356 | CHICAGO | ACTIVE | Verify |
| MABMA ENTERPRISES LLC | Business | 262000118 | CHICAGO | ACTIVE | Verify |
| MAC SYSTEMS LTD | Business | 127001035 | BATAVIA | ACTIVE | Verify |
| MAC'S BURGLAR & FIRE | Business | 127000258 | CHICAGO | NOT RENEWED | Verify |
| MAC'S FIRE AND SAFETY INC | Business | 127000990 | LITCHFIELD | NOT RENEWED | Verify |
| MACH SECURITY OPERATIONS INC | Business | 122001066 | MONEE | NOT RENEWED | Verify |
| MACK SECURITY & DETECTIVE AGENCY, INC. | Business | 122001605 | CHICAGO | ACTIVE | Verify |
| MACK SECURITY & DETECTIVE AGENCY, INC. | Business | 117001904 | CHICAGO | ACTIVE | Verify |
| MADIGAN PI LLC | Business | 117001666 | FREEPORT | NOT RENEWED | Verify |
| MADIKEN SECURITY LLC | Business | 122001537 | CHICAGO | ACTIVE | Verify |
| MADISON COUNTY REGIONAL OFFICE OF EDUCATION 41 | Business | 262000028 | EDWARDSVILLE | ACTIVE | Verify |
| MAGIC P I & SECURITY INC | Business | 122000728 | CHICAGO | INOPERATIVE | Verify |
| MAGIC P I & SECURITY INC | Business | 117000973 | CHICAGO | INOPERATIVE | Verify |
| MAGNUM DHATS SEC INV | Business | 117000482 | CHICAGO | NOT RENEWED | Verify |
| MAGNUM DHATS SEC INVESTIGATORS | Business | 122000423 | CHICAGO | NOT RENEWED | Verify |
| MAGNUM SECURE 365 INC | Business | 122001641 | TINLEY PARK | ACTIVE | Verify |
| MAGNUM SECURITY & INVESTIGATION INC | Business | 123000227 | CHICAGO | CLOSED | Verify |
| MAGNUM SECURITY & INVESTIGATION INC | Business | 118000205 | CHICAGO | CLOSED | Verify |
| MAGNUM SECURITY & INVESTIGATION INC | Business | 117001117 | CHICAGO | CLOSED | Verify |
| MAGNUM SECURITY & INVESTIGATION INC | Business | 122000847 | CHICAGO | CLOSED | Verify |
| MAIN ELECTRIC CO INC | Business | 127000677 | CHICAGO | NOT RENEWED | Verify |
| MAJESTIC PROTECTIVE SERVICES INC | Business | 122000719 | CHICAGO | NOT RENEWED | Verify |
| MAJOR LINKS SECURITY AND CONSULTING PLLC | Business | 122001639 | CHICAGO | ACTIVE | Verify |
| MALCA-AMIT ARMORED INC | Business | 120500131 | CHICAGO | ACTIVE | Verify |
| MALEY INVESTIGATIONS & SECURITY INC | Business | 117001331 | MUNDELEIN | NOT RENEWED | Verify |
| MALKO COMMUNICATIONS SERVICES LLC | Business | 127001569 | SKOKIE | ACTIVE | Verify |
| MALKO ELECTRIC COMPANY | Business | 127000128 | GLENVIEW | NOT RENEWED | Verify |
| MANAGEMENT CONSULTING SERVICES INC | Business | 117000644 | ELMHURST | NOT RENEWED | Verify |
| MANIAS DETECTIVE AGENCY | Business | 117000877 | PEORIA | ACTIVE | Verify |
| MANNING PI DETECTIVEAGENCY | Business | 117000503 | PAWNEE | NOT RENEWED | Verify |
| MANROD ELECTRIC INC | Business | 127000565 | ROCKFORD | INOPERATIVE | Verify |
| MANSFIELD ELECTRIC COMPANY | Business | 127000216 | SPRINGFIELD | NOT RENEWED | Verify |
| MAPLE CITY SECURITY | Business | 122000101 | MONMOUTH | NOT RENEWED | Verify |
| MARION FIRE SPRINKLER & ALARM INC | Business | 127001529 | MARION | NOT RENEWED | Verify |
| MARK A ORLICK DET AND SECURITY SERVICE | Business | 201000101 | PLAINFIELD | CLOSED | Verify |
| MARK BIOMETRICS INC. | Business | 262000171 | LOMBARD | ACTIVE | Verify |
| MARK INTERNATIONAL OF ILLINOIS INC | Business | 123000475 | CHICAGO | ACTIVE | Verify |
| MARK INTERNATIONAL OF ILLINOIS INC | Business | 122001593 | CHICAGO | ACTIVE | Verify |
| MARK IV SECURITY SERVICE COMPANY | Business | 122000078 | CHICAGO | NOT RENEWED | Verify |
| MARK IV SECURITY SERVICE COMPANY | Business | 127000075 | CHICAGO | NOT RENEWED | Verify |
| MARK IV SECURITY SERVICE COMPANY | Business | 117000094 | CHICAGO | NOT RENEWED | Verify |
| MARK J CHEVIRON & ASSOCIATES | Business | 117000066 | DECATUR | NOT RENEWED | Verify |
| MARK V DETECTIVE AGCY | Business | 117000324 | CARPENTERSVILLE | INOPERATIVE | Verify |
| MARK V SECURITY AGENCY | Business | 122000188 | ELGIN | NOT RENEWED | Verify |
| MARKHAM ELECTRIC INC | Business | 127000637 | ELK GROVE VILLAGE | NOT RENEWED | Verify |