| MCManitowoc Cranes | Port Washington | — | ◇ UNVERIFIED |
M-b Companies INC | Chilton | — | ◇ UNVERIFIED |
M-b Companies INC | Chilton | — | ◇ UNVERIFIED |
| MMMercury Marine - Plant 33 | Oshkosh | — | ◇ UNVERIFIED |
| MGMerit Gear LLC | Antigo | — | ◇ UNVERIFIED |
| MEMiller Electric - Light Industrial | Appleton | — | ◇ UNVERIFIED |
| MEMiller Electric Manufacturing LLC - Ie North | Greenville | — | ◇ UNVERIFIED |
| MMMorris Material Handling INC | Oak Creek | — | ◇ UNVERIFIED |
| NENeroco Engineering | Oconto | — | ◇ UNVERIFIED |
| OCOshkosh CORP - Oakwood Facility | Oshkosh | — | ◇ UNVERIFIED |
| OCOutagamie Cnty Hwy Dept | Appleton | — | ◇ UNVERIFIED |
| OIOxbo International | Clear Lake | — | ▲ REPORTED CLOSED |
| PTPrecision Twist Drill CO - Rhinelander | Rhinelander | — | ◇ UNVERIFIED |
| RMRenard Machine | Green Bay | — | ◇ UNVERIFIED |
| RIRexnord Industries INC | Milwaukee | — | ◇ UNVERIFIED |
| SISchoessow INC | Portage | — | ◇ UNVERIFIED |
| SISiemens Industry INC - Enviroscan | Rothschild | — | ◇ UNVERIFIED |
| SMSimplicity Mfg INC | Port Washington | — | ◇ UNVERIFIED |
| TSTarget Store T1895 | Milwaukee | — | ◇ UNVERIFIED |
| TPTecumseh Products Co-grafton Operations | Grafton | — | ◇ UNVERIFIED |
| TPTecumseh Products Co-new Holstein Operations | New Holstein | — | ◇ UNVERIFIED |
| TUTerex Utilities | Waukesha | — | ◇ UNVERIFIED |
| TTThe Trane Company - Main Complex | La Crosse | — | ◇ UNVERIFIED |
| TAToshiba America Energy Systems CORP | West Allis | — | ◇ UNVERIFIED |
| TPTrane Plt 7 Manufacturing | La Crosse | — | ◇ UNVERIFIED |
| TFTwist Farm Equipment | Elkhorn | — | ◇ UNVERIFIED |
| WSWeir Slurry Group, INC | Madison | — | ▲ REPORTED CLOSED |
| EC"4028 - Eau Claire MFG Engineering" | Eau Claire | 20–99 | ◐ LIKELY ACTIVE |
| AWACE World Controls - WI | Pewaukee | 1–19 | ◐ LIKELY ACTIVE |
| AIAireSafe International | Janesville | 20–99 | ◐ LIKELY ACTIVE |
| AFAirPro Fan & Blower co. -EAST | Rhinelander | 1–19 | ◐ LIKELY ACTIVE |
| AFAirPro Fan & Blower co. -NORTH | Rhinelander | 20–99 | ◐ LIKELY ACTIVE |
| AAlkar | Lodi | 100–499 | ◐ LIKELY ACTIVE |
Alliance Laundry Systems - Genuine Parts | Manitowoc | 20–99 | ◐ LIKELY ACTIVE |
Alliance Laundry Systems - Plant 1 | Ripon | 500+ | ◐ LIKELY ACTIVE |
Alliance Laundry Systems - Plant 3 | Manitowoc | 100–499 | ◐ LIKELY ACTIVE |
| AMArgon Medical Devices Inc. Portage, WI | Portage | 1–19 | ◐ LIKELY ACTIVE |
| BLBend-Tech LLC | Osceola | 20–99 | ◐ LIKELY ACTIVE |
| BTBesTech Tool LLC | West Bend | 20–99 | ◐ LIKELY ACTIVE |
| BOBlue Onyx Systems LLC | New Berlin | 20–99 | ◐ LIKELY ACTIVE |
| BEBushman Equipment | Menomonee Falls | 20–99 | ◐ LIKELY ACTIVE |
| BCBW Converting Glory Road | Green Bay | 100–499 | ◐ LIKELY ACTIVE |
| CGCarbide Grinding Co., Inc dba Gorilla Mill | Waukesha | 20–99 | ◐ LIKELY ACTIVE |
| CCCentroMotion - Corporate | Waukesha | 20–99 | ◐ LIKELY ACTIVE |
| CPCircle Packaging Machinery | De Pere | 20–99 | ◐ LIKELY ACTIVE |
| CLClear Lake Oxbo | Clear Lake | 20–99 | ◐ LIKELY ACTIVE |
| CICNH Industrial America LLC | Sturtevant | 100–499 | ◐ LIKELY ACTIVE |
| CHCommercial HVAC - Americas : MFG-La Crosse, WI-USA | La Crosse | 500+ | ◐ LIKELY ACTIVE |
| CSCommercial Solutions Division - West | Appleton | 100–499 | ◐ LIKELY ACTIVE |
| CTCreation Technologies MIL | Oak Creek | 100–499 | ◐ LIKELY ACTIVE |