| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| SCIENTEL SOLUTIONS PLLC | Business | 127001821 | LOMBARD | ACTIVE | Verify |
| SCIENTIFIC SECURITY INC | Business | 117000618 | EAST SAINT LOUIS | NOT RENEWED | Verify |
| SCIENTIFIC SECURITY INC | Business | 122000235 | EAST SAINT LOUIS | NOT RENEWED | Verify |
| SCM SECURITY SOLUTIONS INC | Business | 127001206 | CHICAGO | ACTIVE | Verify |
| SCOTLAND YARD INC | Business | 117000575 | CHICAGO | INOPERATIVE | Verify |
| SCOTLAND YARD INC | Business | 122000498 | CHICAGO | INOPERATIVE | Verify |
| SCOTLAND YARD INC TRAINING ACADEMY | Business | 102000113 | CHICAGO | ACTIVE | Verify |
| SCOTLAND YARD INVESTIGATIONS | Business | 117000679 | ELBURN | ACTIVE | Verify |
| SCOTT FORREST STERN AND ASSOC INC | Business | 118000206 | CHICAGO | NOT RENEWED | Verify |
| SCOTT FORREST STERN AND ASSOC INC | Business | 117000723 | CHICAGO | CANCELLED | Verify |
| SCOTT G HAACKER | Business | 262000075 | ELGIN | ACTIVE | Verify |
| SCS & ASSOCIATES INC | Business | 117000021 | ROLLING MEADOWS | NOT RENEWED | Verify |
| SCS RESEARCH AGENCY INC | Business | 122000017 | BARRINGTON | NOT RENEWED | Verify |
| SDG GLOBAL INC | Business | 123000360 | CHICAGO | NOT RENEWED | Verify |
| SDG GLOBAL INC | Business | 117001558 | SOUTH HOLLAND | NOT RENEWED | Verify |
| SDG GLOBAL INC | Business | 122001181 | SOUTH HOLLAND | NOT RENEWED | Verify |
| SDG GLOBAL INC | Business | 123000359 | KANKAKEE | NOT RENEWED | Verify |
| SDG GLOBAL INC | Business | 118000296 | CHICAGO | NOT RENEWED | Verify |
| SDG GLOBAL INC | Business | 118000295 | KANKAKEE | NOT RENEWED | Verify |
| SDG GLOBAL INC | Business | 262000123 | SOUTH HOLLAND | NOT RENEWED | Verify |
| SDG GROUP INC | Business | 117001592 | KANKAKEE | NOT RENEWED | Verify |
| SDG GROUP INC | Business | 122001220 | KANKAKEE | NOT RENEWED | Verify |
| SDG INVESTIGATIONS INC | Business | 122001280 | CHICAGO | NOT RENEWED | Verify |
| SDG INVESTIGATIONS INC | Business | 117001354 | SOUTH HOLLAND | NOT RENEWED | Verify |
| SDG PROTECTION INCORPORATED | Business | 122001287 | SOUTH HOLLAND | NOT RENEWED | Verify |
| SDG SECURITY INC | Business | 122001279 | SOUTH HOLLAND | NOT RENEWED | Verify |
| SDI CONSULTING GROUP INC | Business | 117001152 | MURPHYSBORO | NOT RENEWED | Verify |
| SDI PRESENCE LLC | Business | 127001681 | CHICAGO | ACTIVE | Verify |
| SDI SECURITY INC | Business | 122000520 | CHICAGO | NOT RENEWED | Verify |
| SDI SECURITY INC | Business | 117000826 | CHICAGO | NOT RENEWED | Verify |
| SDI SOLUTIONS LLC | Business | 127001553 | CHICAGO | CLOSED | Verify |
| SEAL TIGHT SECURITY INC | Business | 122000864 | ELK GROVE VILLAGE | NOT RENEWED | Verify |
| SEAL TIGHT SECURITY INC | Business | 117001177 | ELK GROVE VILLAGE | NOT RENEWED | Verify |
| SEAL-TIGHT ELECTRICAL CONTRACTING | Business | 128000051 | CHICAGO | NOT RENEWED | Verify |
| SEAL-TIGHT ELECTRICAL CONTRACTING | Business | 127000900 | SCHAUMBURG | INOPERATIVE | Verify |
| SEAL-TIGHT PROTECTIVE SERVICES INC | Business | 122000999 | DES PLAINES | ACTIVE | Verify |
| SEAL-TIGHT SECURITY INC | Business | 128000140 | PARK RIDGE | NOT RENEWED | Verify |
| SEAL-TIGHT SECURITY INC | Business | 122000679 | CHICAGO | NOT RENEWED | Verify |
| SEAL-TIGHT SECURITY INC | Business | 127000943 | ELK GROVE VILLAGE | NOT RENEWED | Verify |
| SEARCH INTERNATIONAL | Business | 117000346 | SCHAUMBURG | NOT RENEWED | Verify |
| SEARCH INVESTIGATION'S INC | Business | 118000164 | SALEM | NOT RENEWED | Verify |
| SEARCH INVESTIGATIONS AND SECURITY AGCY | Business | 117000462 | BERWYN | NOT RENEWED | Verify |
| SEARCH INVESTIGATIONS INC | Business | 117000935 | GLEN ELLYN | ACTIVE | Verify |
| SEARCHERS INVESTIGATING COMPANY INC | Business | 117000787 | CHICAGO | NOT RENEWED | Verify |
| SEARS CORPORATE SECURITY DEPT | Business | 120500039 | CHICAGO | NOT RENEWED | Verify |
| SEARS ROEBUCK AND CO | Business | 201000145 | CHICAGO | ACTIVE | Verify |
| SEAWAY BANK AND TRUST COMPANY | Business | 120500051 | CHICAGO | NOT RENEWED | Verify |
| SEB SERVICES OF ILLINOIS INC | Business | 123000326 | CHICAGO | CLOSED | Verify |
| SEB SERVICES OF ILLINOIS INC | Business | 122000975 | CHICAGO | CLOSED | Verify |
| SEB SERVICES OF NEW YORK INC | Business | 122001301 | CHICAGO | CANCELLED | Verify |