| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| MARKSMAN SECURITY CORPORATION | Business | 122001484 | CHICAGO | ACTIVE | Verify |
| MARKSMANSHIP TRAINING GROUP LTD | Business | 102000203 | HOFFMAN ESTATES | ACTIVE | Verify |
| MARMIC FIRE & SAFETY CO INC | Business | 127001875 | WOODRIDGE | ACTIVE | Verify |
| MARON ELECTRIC COMPANY | Business | 127000135 | SKOKIE | NOT RENEWED | Verify |
| MARQUETTE BANK | Business | 120500012 | CHICAGO | ACTIVE | Verify |
| MARQUETTE NATIONAL BANK | Business | 120000073 | CHICAGO | NOT RENEWED | Verify |
| MARSHALL INVESTIGATIVE GROUP INC | Business | 117001597 | PARK RIDGE | ACTIVE | Verify |
| MARSHALL SECURITY SERVICES | Business | 122000612 | LOMBARD | NOT RENEWED | Verify |
| MARTIN SECURITY INC | Business | 123000115 | SOUTH BELOIT | NOT RENEWED | Verify |
| MARTIN WIRELESS INC | Business | 127001660 | LAKE VILLA | NOT RENEWED | Verify |
| MARVIN A FRANCIS | Business | 122000020 | LAGRANGE PARK | NOT RENEWED | Verify |
| MARVIN A FRANCIS | Business | 117000024 | LAGRANGE PARK | NOT RENEWED | Verify |
| MARVIN A FRANCIS | Business | 127000077 | LAGRANGE PARK | NOT RENEWED | Verify |
| MARZANOS MIAMI BOWL SECURITY | Business | 120100100 | CHICAGO | NOT RENEWED | Verify |
| MASCAL ELECTRIC INC | Business | 127000140 | DEKALB | INOPERATIVE | Verify |
| MASON INVESTIGATIVE AND SEC CONSULTANTS | Business | 117000490 | LAKE VILLA | INOPERATIVE | Verify |
| MASON PROPERTIES | Business | 120100092 | DEKALB | NOT RENEWED | Verify |
| MASTEC NORTH AMERICA INC | Business | 127001559 | BLOOMINGTON | ACTIVE | Verify |
| MASTER ALARM PROTECTION | Business | 127000104 | WILMETTE | NOT RENEWED | Verify |
| MASTERCRAFT ELECTRONICS INC | Business | 127000519 | CHICAGO | NOT RENEWED | Verify |
| MASTERS UNLIMITED INC DETECTIVE AGENCY | Business | 118000045 | HARVEY | NOT RENEWED | Verify |
| MASTERS UNLIMITED INC DETECTIVE AGENCY | Business | 123000024 | HARVEY | NOT RENEWED | Verify |
| MASTERS UNLIMITED INC DETECTIVE AGENCY | Business | 117000410 | CHICAGO | INOPERATIVE | Verify |
| MASTERS UNLIMITED INC DETECTIVE AGENCY | Business | 122000356 | CHICAGO | INOPERATIVE | Verify |
| MATCO FIRE PROTECTION INCORPORATED | Business | 127001673 | PAXTON | NOT RENEWED | Verify |
| MATLIN & ASSOCIATES LTD | Business | 117000383 | CRYSTAL LAKE | NOT RENEWED | Verify |
| MATRIX COMMUNICATION SERVICES INC | Business | 127001598 | ANTIOCH | NOT RENEWED | Verify |
| MAURICE SYKES REALTY | Business | 120100112 | CHICAGO | NOT RENEWED | Verify |
| MAVERICK SECURITY INC | Business | 123000392 | CHICAGO | NOT RENEWED | Verify |
| MAVERICK SECURITY INC | Business | 122001145 | LOMBARD | NOT RENEWED | Verify |
| MAX SERVICES | Business | 127000774 | WESTCHESTER | NOT RENEWED | Verify |
| MAXIMUM PROTECTION INDUSTRIES INC | Business | 128000038 | TAYLORVILLE | NOT RENEWED | Verify |
| MAXIMUM PROTECTION INDUSTRIES INC | Business | 128000025 | FRANKLIN PARK | NOT RENEWED | Verify |
| MAXIMUM PROTECTION INDUSTRIES INC | Business | 128000027 | KANKAKEE | NOT RENEWED | Verify |
| MAXIMUM PROTECTION INDUSTRIES INC | Business | 127000728 | OAK BROOK | NOT RENEWED | Verify |
| MAXIMUM PROTECTION INDUSTRIES INC | Business | 128000026 | HOMEWOOD | NOT RENEWED | Verify |
| MAXIMUM PROTECTION INDUSTRIES INC | Business | 128000028 | SPRINGFIELD | NOT RENEWED | Verify |
| MAXIMUM PROTECTION INDUSTRIES INC | Business | 128000029 | DANVILLE | NOT RENEWED | Verify |
| MAXIMUM PROTECTION INDUSTRIES INC | Business | 128000045 | DES PLAINES | NOT RENEWED | Verify |
| MAXIMUM PROTECTION INDUSTRIES INC | Business | 128000046 | HOMEWOOD | NOT RENEWED | Verify |
| MAXIMUM SECURITY & | Business | 122000961 | CHICAGO | NOT RENEWED | Verify |
| MAXIMUM SECURITY & | Business | 117001257 | CHICAGO | NOT RENEWED | Verify |
| MAXIMUM SECURITY & TACTICAL SOLUTIONS INC. | Business | 117001941 | MELROSE PARK | ACTIVE | Verify |
| MAXIMUM SECURITY & TACTICAL SOLUTIONS INC. | Business | 122001683 | MELROSE PARK | INOPERATIVE | Verify |
| MAXIMUM SECURITY CORPORATION | Business | 127001191 | SPRINGFIELD | NOT RENEWED | Verify |
| MAXIMUM SECURITY INC | Business | 122001499 | STREAMWOOD | ACTIVE | Verify |
| MAXIMUM SECURITY PRODUCTS | Business | 127000100 | SCHAUMBURG | NOT RENEWED | Verify |
| MAXIMUM SECURITY SYSTEMS INC | Business | 127000486 | VILLA PARK | NOT RENEWED | Verify |
| MAXPLUS INC DBA MAXAERO | Business | 122000652 | CHICAGO | NOT RENEWED | Verify |
| MAXWELL ASSOCIATES LTD | Business | 122000818 | CHICAGO | NOT RENEWED | Verify |