| INSIGHT INVESTIGATION SERVICES | Business | 117001605 | CHICAGO | ACTIVE | Verify |
| SLICKMAN PRIVATE DETECTIVE AGENCY LLC | Business | 117001634 | ROCKFORD | NOT RENEWED | Verify |
| FIREFLY HOLDING COMPANY ONE INC | Business | 117001645 | MOKENA | CLOSED | Verify |
| GENESIS DETECTIVE AGENCY INC | Business | 117001662 | ROUND LAKE BEACH | NOT RENEWED | Verify |
| JOHNSON ENTERPRISES INC | Business | 117001665 | BLOOMINGTON | NOT RENEWED | Verify |
| MADIGAN PI LLC | Business | 117001666 | FREEPORT | NOT RENEWED | Verify |
| LEGAL CLERKING & PROCESS SERVING INC | Business | 117001678 | CHICAGO | NOT RENEWED | Verify |
| KEY PRIVATE INVESTIGATION BUREAU LLC | Business | 117001701 | CHICAGO | NOT RENEWED | Verify |
| THE PROTECTION GROUP INC | Business | 117001703 | CHICAGO | NOT RENEWED | Verify |
| GLOBAL PROTECTION AND INTELLIGENCE INC | Business | 117001711 | ORLAND PARK | ACTIVE | Verify |
| CONTINENTAL INVESTIGATIVE SERVICES LLC | Business | 117001720 | BENTON | ACTIVE | Verify |
| CHICAGO INTEL AGENCY LTD | Business | 117001737 | JOLIET | ACTIVE | Verify |
| INTEGRITY SECURITY CONSULTING & INVESTIGATIONS INC | Business | 117001740 | MAPLE PARK | ACTIVE | Verify |
| IUNLIMITED INCORPORATED | Business | 117001779 | SPRINGFIELD | NOT RENEWED | Verify |
| QUALITY PROFESSIONAL DETECTIVE & SECURITY AGENCY LLC | Business | 117001783 | FRANKFORT | ACTIVE | Verify |
| INTEGRITY INVESTIGATION AGENCY LLC | Business | 117001799 | CONGERVILLE | ACTIVE | Verify |
| PEYTON INVESTIGATIONS INC | Business | 117001808 | CHICAGO | ACTIVE | Verify |
| PEAK DETECTIVE SERVICES CORPORATION | Business | 117001849 | SAINT CHARLES | NOT RENEWED | Verify |
| K SECURITY & INVESTIGATIONS INC D/B/A 2ND CITY FINGERPRINTING INC | Business | 117001850 | HOMEWOOD | ACTIVE | Verify |
| COLLISION ANALYTICS LLC | Business | 117001857 | WOODSTOCK | ACTIVE | Verify |
| DIGITAL DIGGING INVESTIGATIONS, PLLC | Business | 117001878 | CHICAGO | ACTIVE | Verify |
| SECURITIES & INVESTIGATIONS, INC. | Business | 117001887 | SAINT CHARLES | NOT RENEWED | Verify |
| SENTINEL SECURITY PLLC | Business | 117001889 | PALOS HEIGHTS | ACTIVE | Verify |
| NACIONAL SECURITY & INVESTIGATIONS GROUP INC | Business | 117001900 | NILES | ACTIVE | Verify |
| HAH RESOURCES INC | Business | 117001902 | FAIRFIELD | ACTIVE | Verify |
| ELITE PRIVATE DETECTIVE AND SECURITY SERVICES LLC | Business | 117001903 | SAUK VILLAGE | ACTIVE | Verify |
| PAGE SECURITY INC | Business | 117001935 | CHICAGO | ACTIVE | Verify |
| BRIGHT LINE INVESTIGATIONS PLLC | Business | 117001938 | CHICAGO | ACTIVE | Verify |
| RELIANT INVESTIGATIVE SERVICES | Business | 117001944 | ORLAND PARK | ACTIVE | Verify |
| A-1 ALL AMERICAN INVESTIGATIONS | Business | 118000009 | GLENVEIW | NOT RENEWED | Verify |
| CENOIS PRIVATE DETECTIVES INC | Business | 118000016 | LIBERTYVILLE | NOT RENEWED | Verify |
| CPP SECURITY SERVICE | Business | 118000023 | CHICAGO | CANCELLED | Verify |
| CPP SECURITY SERVICE | Business | 118000025 | WHEATON | CANCELLED | Verify |
| THE INVESTIGATORS | Business | 118000031 | ELGIN | CANCELLED | Verify |
| HERITAGE INVESTIGATIONS | Business | 118000033 | CAROL STREAM | NOT RENEWED | Verify |
| BLUE KNIGHT DETECTIVE AGCY & SEC CO INC | Business | 118000034 | CHICAGO | NOT RENEWED | Verify |
| LEVY SECURITY CORPORATION | Business | 118000042 | CHICAGO | NOT RENEWED | Verify |
| PALAMEDES INC | Business | 118000071 | LIBERTYVILLE | NOT RENEWED | Verify |
| J K GUARDIAN SECURITY SERVICES INC | Business | 118000075 | WEST CHICAGO | NOT RENEWED | Verify |
| PINKERTONS INVESTIGATIONS | Business | 118000076 | ROCKFORD | NOT RENEWED | Verify |
| EDWARD T CARMODY | Business | 118000085 | CHICAGO | CANCELLED | Verify |
| STANLEY SMITH SECURITY INC | Business | 118000090 | CHICAGO | CLOSED | Verify |
| GLOBAL SECURITY SERVICES INC | Business | 118000096 | CHICAGO | CANCELLED | Verify |
| R SCHWARZ & ASSOCIATES LTD | Business | 118000099 | WADSWORTH | NOT RENEWED | Verify |
| WICKLANDER ZULAWSKI AND ASSOCS | Business | 118000100 | AURORA | CLOSED | Verify |
| PROFESSIONAL INVESTIGATIONS INC | Business | 118000107 | SHERMAN | NOT RENEWED | Verify |
| COUNSELORS INVESTIGATIONS | Business | 118000112 | CHICAGO | CANCELLED | Verify |
| RHS ASSOCIATES | Business | 118000138 | CHICAGO | NOT RENEWED | Verify |
| ECHO INVESTIGATIONS | Business | 118000148 | STREAMWOOD | NOT RENEWED | Verify |
| BRIAN W STEWART & ASSOCIATES INC | Business | 118000151 | CHAMPAIGN | NOT RENEWED | Verify |