| KOKreischer Optics LLC | Mchenry | — | ◇ UNVERIFIED |
| KHKuchar High Performance Parts INC. | Carlinville | — | ◇ UNVERIFIED |
| KIKuhlman INC. | Northlake | — | ◇ UNVERIFIED |
| KTKwalyti Tooling & Machinery Rebuilding INC | Batavia | — | ◇ UNVERIFIED |
| LMLakeview Memorial Gardens | Fairview Heights | — | ◇ UNVERIFIED |
| LML.C. Mold Inc. | Rolling Meadows | — | ◇ UNVERIFIED |
| LRLifetime Rooftile CO | Seneca | — | ◇ UNVERIFIED |
| LTLion Tool & Die CO. | Algonquin | — | ◇ UNVERIFIED |
| LPLivingston Products Incorporated | Buffalo Grove | — | ◇ UNVERIFIED |
| LGLogan Graphic Products, INC. | Wauconda | — | ◇ UNVERIFIED |
| LELong Elevator & Macine CO. | Riverton | — | ◇ UNVERIFIED |
| LTLorchem Technologies, INC. | Elgin | — | ◇ UNVERIFIED |
| LULpms USA | Downers Grove | — | ◇ UNVERIFIED |
| MIM3 Industries LLC | Aurora | — | ◇ UNVERIFIED |
| MMMachinery Mender LLC | Woodstock | — | ◇ UNVERIFIED |
| MVMadden Ventures, INC. | Mundelein | — | ◇ UNVERIFIED |
| MEMaryam Enterprises LLC | Lisle | — | ◇ UNVERIFIED |
| MAMary Ann Eltvedt Revocable Trust Dated July 8th, 1994 | Woodstock | — | ◇ UNVERIFIED |
| MTMasterform Tool Company | Franklin Park | — | ◇ UNVERIFIED |
| MPMast Productions, INC. | Payson | — | ◇ UNVERIFIED |
 Material Handling Systems, INC. | Addison | — | ◇ UNVERIFIED |
| MIMaven Investment Partners LLC | Mundelein | — | ◇ UNVERIFIED |
| MMMcdonnell & Miller Itt | Chicago | — | ◇ UNVERIFIED |
| MPMenasha Packaging CO LLC | Chicago | — | ◇ UNVERIFIED |
| MAMeridian Automotive Systems INC | Centralia | — | ◇ UNVERIFIED |
| MUMetals USA Specialty Metals Northcentral, INC. | Northbrook | — | ◇ UNVERIFIED |
| MMMgs Manufacturing Group | Libertyville | — | ◇ UNVERIFIED |
| MLMickey's Linen | Villa Park | — | ◇ UNVERIFIED |
| MCMidwest Cnc LLC | Loves Park | — | ◇ UNVERIFIED |
| MFMidwest Forging Die Dba Water Works of Rockford | Rockford | — | ◇ UNVERIFIED |
| MLMidwest Lift & Elevator LLC | Effingham | — | ◇ UNVERIFIED |
| MMMidwest Molding Solutions, INC. | Bloomington | — | ◇ UNVERIFIED |
| MFMiller Fluid Power | Bensenville | — | ◇ UNVERIFIED |
| MTMiller Trucking & Excavating | Carbon Cliff | — | ◇ UNVERIFIED |
| MIMinuteman International, INC. | Hampshire | — | ◇ UNVERIFIED |
| MAMmgc Acquisition, LLC | Elmhurst | — | ◇ UNVERIFIED |
| MPM&r Printing Equipment, INC. | Glen Ellyn | — | ◇ UNVERIFIED |
| MFMT Fabrication, Inc. | Benton | — | ◇ UNVERIFIED |
| MRMullins Race Engines | Mount Olive | — | ◇ UNVERIFIED |
 Mumford Micro Machine Works, LLC | Bluford | — | ◇ UNVERIFIED |
| NTNewko Tool & Engineering | Palatine | — | ◇ UNVERIFIED |
| OSO'hare Spring Company, INC. | Elk Grove Village | — | ◇ UNVERIFIED |
| OSOmega Sign & Lighting Inc/yesco Chicago | Addison | — | ◇ UNVERIFIED |
| OCOptibelt CORP | Bartlett | — | ◇ UNVERIFIED |
| OEOtis Elevator Company | Chicago | — | ◇ UNVERIFIED |
| PEParkway Elevators, INC. | Chicago | — | ◇ UNVERIFIED |
| PMPeters Machine LLC | Decatur | — | ◇ UNVERIFIED |
| PTPhoenix Tool CORP. | Elk Grove Village | — | ◇ UNVERIFIED |
| PTPhoenix Tool & Molding Company | Elk Grove Village | — | ◇ UNVERIFIED |
| PTPht Tech, LLC | Joliet | — | ◇ UNVERIFIED |
