| AIA.j.r. Industries, INC. | Elk Grove Village | 20–99 | ● ACTIVE |
Elgin Sweeper Company | Elgin | 100–499 | ● ACTIVE |
| BTBelden Tools INC | Hillside | — | ● ACTIVE |
C E Niehoff & CO | Evanston | — | ● ACTIVE |
Dynamic Manufacturing INC | Hillside | — | ● ACTIVE |
Lund Industries, INC | Northbrook | — | ● ACTIVE |
Metal Impact LLC | Elk Grove Village | — | ● ACTIVE |
Motor Coach Industries, INC | Des Plaines | — | ● ACTIVE |
Progress Rail Locomotive INC. | Mccook | — | ● ACTIVE |
Ramcel Precision Stamping & Manufacturing LLC | Northbrook | 20–99 | ● ACTIVE |
Aerodirect INC | Wheeling | — | ● ACTIVE |
Ateq & Cobra Aviation, INC. | Arlington Heights | — | ● ACTIVE |
| CPChicago Precision Aero, LLC | Elk Grove Village | — | ● ACTIVE |
General Truck Parts & Equipment Company | Chicago | — | ● ACTIVE |
Illinois Auto Truck CO INC | Des Plaines | — | ● ACTIVE |
Infinitybox, LLC | Chicago | — | ● ACTIVE |
Kranze Technology Solutions INC | Des Plaines | — | ● ACTIVE |
Light of Mine LLC | Chicago | — | ● ACTIVE |
| MRMaquoketa Research INC. | Elk Grove Village | — | ● ACTIVE |
| MMModern Marksman LLC | Glenview | — | ● ACTIVE |
| MCM.p.c. Communication and Lighting, INC. | Northbrook | — | ● ACTIVE |
| NRNpc Robotics Corporation | Northbrook | — | ● ACTIVE |
Robopave INC. | Palos Heights | — | ● ACTIVE |
Scaletta Moloney Armoring CORP | Chicago | — | ● ACTIVE |
Technetics Group Chicago LLC | Harwood Hts | — | ● ACTIVE |
| CWCardwell Westinghouse | Chicago | 20–99 | ◐ LIKELY ACTIVE |
| TATower Automotive Operations USA I LLC | Chicago | 100–499 | ◐ LIKELY ACTIVE |
| UMUnity Manufacturing CO | Chicago | 20–99 | ◐ LIKELY ACTIVE |
| BTBorgwarner Transmission Products LLC | Bellwood | — | ◐ LIKELY ACTIVE |
| HAHeligear Acquisition CO Dbanorthstar Aerospace (chicago) INC | Bedford Park | — | ◐ LIKELY ACTIVE |
| WMWoodward Mpc INC | Niles | 500+ | ◐ LIKELY ACTIVE |
| DMDynamic Manufacturing CO | Melrose Park | — | ◐ LIKELY ACTIVE |
| FMFord Motor CO. - Chgo Assembly Plant | Chicago | — | ◐ LIKELY ACTIVE |
| FMFord Motor CO | Chicago Heights | — | ◇ UNVERIFIED |
| CRCalumet River Fleeting - Chicago Dry Dock | Chicago | 1–19 | ◐ LIKELY ACTIVE |
| DIDynomax, Inc. | Wheeling | 100–499 | ◐ LIKELY ACTIVE |
| FCFlex-N-Gate Chicago | Chicago | 500+ | ◐ LIKELY ACTIVE |
| PBPrikos & Becker | Skokie | 20–99 | ◐ LIKELY ACTIVE |
| PMPrincipal Manufacturing Corporation | Braodview | 100–499 | ◐ LIKELY ACTIVE |
| SCSteiner CORP. | Chicago | 20–99 | ◐ LIKELY ACTIVE |
| AAApplied Acoustics Intl | Chicago Heights | — | ◇ UNVERIFIED |
| BCBoeing Company | Chicago | — | ◇ UNVERIFIED |
| CHChicago Heights Railcar INC | Chicago Heights | — | ◇ UNVERIFIED |
| CECrawford Electric Generating Station | Chicago | — | ◇ UNVERIFIED |
| DMDynamic Manufacturing- Hillside 5 | Hillside | — | ◇ UNVERIFIED |
| DMDynamic Manufacturing INC | Hillside | — | ◇ UNVERIFIED |
| DMDynamic Mfg INC | Melrose Park | — | ◇ UNVERIFIED |
| FMFederal - Mogul Driveline Products | Chicago | — | ◇ UNVERIFIED |
Illinois Marine Towing, INC. (imt) | Lemont | — | ◇ UNVERIFIED |
| MAMorse Automotive CORP | Chicago | — | ◇ UNVERIFIED |