| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| STEP ABOVE SECURITY, PLLC | Business | 122001668 | ROSEMONT | ACTIVE | Verify |
| STEPHEN D JOHNSON | Business | 102000178 | MILAN | ACTIVE | Verify |
| STERLING INVESTIGATIONS INC | Business | 117001335 | HAWTHORN WOODS | NOT RENEWED | Verify |
| STERLING SYSTEMS LIMITED | Business | 127000753 | CHICAGO | NOT RENEWED | Verify |
| STERN DETECTIVE AGENCY PLLC | Business | 117001913 | EVANSTON | ACTIVE | Verify |
| STERN PROCESS & INVESTIGATION LLC | Business | 118000312 | CHICAGO | NOT RENEWED | Verify |
| STERN PROCESS & INVESTIGATION LLC | Business | 117001292 | CHICAGO | NOT RENEWED | Verify |
| STEVE & SONS ENTERPRISES PLLC | Business | 122001630 | CHICAGO | ACTIVE | Verify |
| STEVE M SEMENEK INVESTIGATIONS INC | Business | 117001118 | GURNEE | ACTIVE | Verify |
| STEVENS SECURITY AND TRAINING SERVICES INC | Business | 122001311 | CHICAGO | NOT RENEWED | Verify |
| STEVENS SECURITY CORPORATION | Business | 127001254 | ATHENS | NOT RENEWED | Verify |
| STEVENSON AND ASSOC | Business | 201000062 | CHICAGO | CLOSED | Verify |
| STEWART SECURITY PATROL | Business | 122000102 | PALESTINE | CANCELLED | Verify |
| STEWART SECURITY PATROL INC | Business | 122000365 | ROBINSON | ACTIVE | Verify |
| STEWART WARNER CORP | Business | 120000012 | CHICAGO | NOT RENEWED | Verify |
| STILLWATER CONSULTANTS LLC | Business | 117001621 | WESTERN SPRINGS | NOT RENEWED | Verify |
| STILLWATER CONSULTANTS LLC | Business | 122001325 | WESTERN SPRINGS | NOT RENEWED | Verify |
| STO SECURITY LLC | Business | 122001068 | OAK FOREST | NOT RENEWED | Verify |
| STOEHNER SECURITY SERVICE INC | Business | 123000124 | EAST ST LOUIS | NOT RENEWED | Verify |
| STONEHENGE VENTURES LLC | Business | 117001584 | ISLAND LAKE | NOT RENEWED | Verify |
| STRATEGIC INVESTIGATION SERVICES LLC | Business | 117001312 | RIVERWOODS | NOT RENEWED | Verify |
| STRATEGIC INVESTIGATIONS & EXECUTIVE PROTECTION | Business | 117001669 | NAPERVILLE | ACTIVE | Verify |
| STRATEGIC INVESTIGATIVE GROUP INC | Business | 117001680 | CHICAGO | ACTIVE | Verify |
| STRATEGIC SECURITY SOLUTIONS INC | Business | 117001275 | LEMONT | NOT RENEWED | Verify |
| STRATEGIC SECURITY SOLUTIONS INC | Business | 122000972 | LEMONT | NOT RENEWED | Verify |
| STRATEGIC SOLUTIONS INTERNATIONAL LLC | Business | 122000889 | WHEELING | NOT RENEWED | Verify |
| STREAMWOOD POLICE DEPT | Business | 201000824 | STREAMWOOD | ACTIVE | Verify |
| STRIKE TACTICAL SOLUTIONS | Business | 102000272 | LAKE ZURICH | ACTIVE | Verify |
| STRONGHOLD SECURITY SERVICES INC | Business | 122001672 | SPRINGFIELD | ACTIVE | Verify |
| STROZ FRIEDBERG LLC | Business | 118000302 | CHICAGO | NOT RENEWED | Verify |
| STRYKER INVESTIGATIVE SERVICES, PLLC | Business | 117001888 | AUBURN | ACTIVE | Verify |
| STS ASSOCIATES, LLC | Business | 122001600 | NORTH BARRINGTON | ACTIVE | Verify |
| STS ASSOCIATES, LLC | Business | 117001906 | NORTH BARRINGTON | ACTIVE | Verify |
| STS SECURITY, INC. | Business | 122001422 | DES PLAINES | ACTIVE | Verify |
| STULLERS STEAK-N-SHAKE INC | Business | 120100072 | SPRINGFIELD | CLOSED | Verify |
| SUBURBAN DOOR CHECK & LOCK SERVICE INC | Business | 192000141 | WESTMONT | ACTIVE | Verify |
| SUBURBAN P I INC | Business | 262000043 | AURORA | NOT RENEWED | Verify |
| SUBURBAN P I INC | Business | 118000313 | AURORA | NOT RENEWED | Verify |
| SUBURBAN P. I. INC. | Business | 117001329 | AURORA | NOT RENEWED | Verify |
| SUBURBAN PATROL | Business | 102000194 | ROCKFORD | ACTIVE | Verify |
| SUBURBAN PATROL SERVICE CORP OF ROCKFORD | Business | 122000334 | ROCKFORD | NOT RENEWED | Verify |
| SUBURBAN PATROL SERVICE CORP OF ROCKFORD | Business | 127000131 | ROCKFORD | NOT RENEWED | Verify |
| SUBURBAN PROTECTION SYSTEMS INC | Business | 127001088 | NORTHBROOK | ACTIVE | Verify |
| SUBURBAN SECURITY SERVICES INC | Business | 127000925 | NAPERVILLE | NOT RENEWED | Verify |
| SUBURBAN SECURITY SYSTEMS INC | Business | 127000898 | WESTMONT | NOT RENEWED | Verify |
| SULLIVAN ELECTRIC COMPANY | Business | 127000118 | MARION | NOT RENEWED | Verify |
| SUMMIT INVESTIGATIONS INC | Business | 117001364 | NORTHBROOK | NOT RENEWED | Verify |
| SUMMIT OFF DUTY SERVICES, PLLC | Business | 122001659 | DES PLAINES | INACTIVE | Verify |
| SUMMIT PROTECTIVE SERVICES LLC | Business | 117001189 | GRAYSLAKE | NOT RENEWED | Verify |
| SUMMIT PROTECTIVE SERVICES LLC | Business | 122000897 | GRAYSLAKE | INOPERATIVE | Verify |