Prototek Digital Manufacturing (madison) LLC | Blue Mounds | — | ● ACTIVE |
| WBWisconsin Brewing Company LLC | Verona | 20–99 | ● ACTIVE |
| CACompressed Air Technology, INC. | Marshall | — | ● ACTIVE |
| CSControlled Surface Finishing, Incorporated | Stoughton | — | ● ACTIVE |
| BBoumatic | Madison | 100–499 | ◐ LIKELY ACTIVE |
| NGNord Gear CORP | Waunakee | 100–499 | ◐ LIKELY ACTIVE |
| CCCarnes CO | Verona | 20–99 | ◐ LIKELY ACTIVE |
| FIFederal Industries | Belleville | 100–499 | ◐ LIKELY ACTIVE |
| FFFranklin Fueling Systems - Madison | Madison | 100–499 | ◐ LIKELY ACTIVE |
| TLTherma-stor LLC | Madison | — | ◐ LIKELY ACTIVE |
| FPFristam Pumps INC | Middleton | — | ◇ UNVERIFIED |
| WSWeir Slurry Group, INC | Madison | — | ◇ UNVERIFIED |
| CECummins Emission Solutions Stoughton | Stoughton | 100–499 | ◐ LIKELY ACTIVE |
| EDEquipment Depot Wisconsin, Inc. - Sun Prairie | Sun Prairie | 1–19 | ◐ LIKELY ACTIVE |
| FWFranklin Water Treatment - Waunakee | Waunakee | 20–99 | ◐ LIKELY ACTIVE |
| IPIdeal Pase, A Massman Company | Madison | 20–99 | ◐ LIKELY ACTIVE |
| IEIsthmus Engineering and Manufacturing | Madison | 20–99 | ◐ LIKELY ACTIVE |
| OMO&A Manufacturing | Brooklyn | 20–99 | ◐ LIKELY ACTIVE |
| OMOa Manufacturing INC | Verona | 20–99 | ◐ LIKELY ACTIVE |
| QMQuest Middleton | Middleton | 1–19 | ◐ LIKELY ACTIVE |
| RLRenewAire LLC | Waunakee | 100–499 | ◐ LIKELY ACTIVE |
| RLRenewAire LLC - Dane | Dane | 1–19 | ◐ LIKELY ACTIVE |
| RPResearch Products, Madison Campus - AprilAire Plant, Tech Center | Madison | 100–499 | ◐ LIKELY ACTIVE |
| SPSun Prairie Operations | Sun Prairie | 100–499 | ◐ LIKELY ACTIVE |
| URUnited Refrigeration, INC | Madison | — | ◐ LIKELY ACTIVE |
| BCBock CORP | Madison | — | ◇ UNVERIFIED |
| GHGeneral Heating & Air Conditioning, INC. | Verona | — | ◇ UNVERIFIED |
| LFLaser Fire Protection LLC | Madison | — | ◇ UNVERIFIED |
| MIMidamerco, INC. | Madison | — | ◇ UNVERIFIED |
| MMMorris Material Handling | Windsor | — | ◇ UNVERIFIED |
| RPResearch Products CORP | Madison | — | ◇ UNVERIFIED |
| RPResearch Products Corporation | Madison | — | ◇ UNVERIFIED |
| TPTetra Pak Processing Equipment INC | Windsor | — | ◇ UNVERIFIED |