| TCTaylor Company | Rockton | 500+ | ◐ LIKELY ACTIVE |
| TGTerraSource Global | Belleville | 100–499 | ◐ LIKELY ACTIVE |
| TPTetra Pak Incorporated Vernon Hills | Vernon Hills | 100–499 | ◐ LIKELY ACTIVE |
| TPTetra Pak Incorportated Rockford | Rockford | 1–19 | ◐ LIKELY ACTIVE |
| TRThe Rdi Group General Partnership | Itasca | — | ◐ LIKELY ACTIVE |
| TKThermo King Sales & Service - Rock Island | Rock Island | 20–99 | ◐ LIKELY ACTIVE |
| TKThermo King Sales & Service - Springfield | Springfield | 1–19 | ◐ LIKELY ACTIVE |
| TLTH Lemont Inc | Countryside | 20–99 | ◐ LIKELY ACTIVE |
| TGThomas-zientz Group INC | Woodstock | — | ◐ LIKELY ACTIVE |
| TPTriangle Package Machinery Company | Chicago | 100–499 | ◐ LIKELY ACTIVE |
| UIUesco Industries, Inc | Alsip | 20–99 | ◐ LIKELY ACTIVE |
| UMUnited Machining North America LLC | Lincolnshire | — | ◐ LIKELY ACTIVE |
| VPVf2 Power CO | Chicago | — | ◐ LIKELY ACTIVE |
| VTVideojet Technology Belleville | Belleville | 20–99 | ◐ LIKELY ACTIVE |
| VLViper Lift Trucks LLC | Cary | — | ◐ LIKELY ACTIVE |
| VUVoortman USA LLC | Monee | — | ◐ LIKELY ACTIVE |
| WUWaterjet USA LLC | Geneva | — | ◐ LIKELY ACTIVE |
| WCWhitesell Corporation Chicago | Chicago | 1–19 | ◐ LIKELY ACTIVE |
| WHW. H. Leary Company | Tinley Park | 20–99 | ◐ LIKELY ACTIVE |
| WNWittenstein North America | Bartlett | 100–499 | ◐ LIKELY ACTIVE |
| WUWittmann U.S.A. Inc | South Elgin | 1–19 | ◐ LIKELY ACTIVE |
| WRW. R. Pabich Mfg. Co., INC | Chicago | — | ◐ LIKELY ACTIVE |
| XIXylem, Inc | Morton Grove | 500+ | ◐ LIKELY ACTIVE |
| YAYamada America, Inc | Arlington Heights | 20–99 | ◐ LIKELY ACTIVE |
| YMYargus Manufacturing, Inc. | Marshall | 20–99 | ◐ LIKELY ACTIVE |
| YMYetter Manufacturing Company - Macomb | Macomb | 20–99 | ◐ LIKELY ACTIVE |
| KCKkt Chillers, INC | Wood Dale | — | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies, INC. | Granite City | — | ◐ LIKELY ACTIVE |
| PPProduct Planning INC | Elk Grove Village | — | ◐ LIKELY ACTIVE |
| PCProto Cutter INC | Freeport | — | ◐ LIKELY ACTIVE |
| SIStoller International INC | Pontiac | — | ◐ LIKELY ACTIVE |
| ATAdvent Tool & Mfg INC | Antioch | — | ◇ UNVERIFIED |
| AWA.w.t. World Trade INC | Chicago | — | ◇ UNVERIFIED |
| BABusiness Advisors Dba Entech Fabrications | Posen | — | ◇ UNVERIFIED |
| CICharnor, INC. | Milan | — | ◇ UNVERIFIED |
| NDNew Dimensions Precision Machining, INC. | Union | — | ◇ UNVERIFIED |
| 2A22772 - A & C Challenger Road, LLC | Frankfort | — | ◇ UNVERIFIED |
| 2F2434 Fletcher Street, L.L.C. | Itasca | — | ◇ UNVERIFIED |
| ACA1 Crane Service | Bridgeview | — | ◇ UNVERIFIED |
| AMAam Metal Forming Chicago Plant 1 | Chicago | — | ◇ UNVERIFIED |
| AWAbest Welding & Eng. Serv. CO | Schiller Park | — | ◇ UNVERIFIED |
| ABAcco Brands INC | Wheeling | — | ◇ UNVERIFIED |
| ATAccura Tool & Mold INC | Crystal Lake | — | ◇ UNVERIFIED |
| ASAdecco Staffing | East Moline | — | ◇ UNVERIFIED |
| AMAdvanced Mobility By Kentucky Trailer | University Park | — | ◇ UNVERIFIED |
Advanced Mobility & Shelter Technologies, LLC | Monee | — | ◇ UNVERIFIED |
| APAfco Products INC | Des Plaines | — | ◇ UNVERIFIED |
| ACAgco CORP Dekalb | Dekalb | — | ◇ UNVERIFIED |
| AHAii Holding, INC. | Danville | — | ◇ UNVERIFIED |
| ACAir Cycle CORP | Lisle | — | ◇ UNVERIFIED |