Bergstrom INC | Rockford | 100–499 | ● ACTIVE |
| IMIngersoll Machine Tools INC | Rockford | 100–499 | ● ACTIVE |
Accelerated Machine Design & Engineering LLC | Rockford | — | ● ACTIVE |
Advanced Machine & Engineering CO | Rockford | 100–499 | ● ACTIVE |
Bourn & Koch, INC. | Rockford | 20–99 | ● ACTIVE |
Danray Products LLC | Rockford | — | ● ACTIVE |
Jerhen Industries INC | Rockford | — | ● ACTIVE |
Obsidian Manufacturing Industries INC | Rockford | — | ● ACTIVE |
Pietro Carnaghi USA INC | Rockford | — | ● ACTIVE |
| CRConcentric Rockford INC | Rockford | — | ◇ UNVERIFIED |
| MHMte Hydraulics, INC. | Rockford | — | ◇ UNVERIFIED |
| PHParker Hannifin/cylinder Division | Rockford | — | ◇ UNVERIFIED |
| BIBarnes International INC | Rockford | — | ◇ UNVERIFIED |
| DADixon Automatic Tool INC | Rockford | 20–99 | ◐ LIKELY ACTIVE |
| ICIngersoll Cutting Tool Company | Rockford | 100–499 | ◐ LIKELY ACTIVE |
| KKomline-Barnes | Rockford | 100–499 | ◐ LIKELY ACTIVE |
| MAMartin Automatic CO | Rockford | 100–499 | ◐ LIKELY ACTIVE |
| WIWeldments INC | Rockford | — | ◐ LIKELY ACTIVE |
| DIDynacorp, INC | Rockford | — | ◇ UNVERIFIED |
| EWEvoqua Water Technologies LLC | Rockford | — | ◇ UNVERIFIED |
| ICIngersoll Cutting Tool CO Member of the Imc Group | Rockford | — | ◇ UNVERIFIED |
| PFPiranha Fabrication | Rockford | — | ◇ UNVERIFIED |
| SISuntec Industries INC | Rockford | — | ◇ UNVERIFIED |
| TPTy Precision Automatics | Rockford | — | ◇ UNVERIFIED |
| CICaldwell, Inc. - Distribution | Rockford | 1–19 | ◐ LIKELY ACTIVE |
| CICaldwell , Inc - Manufacturing | Rockford | 100–499 | ◐ LIKELY ACTIVE |
| EPEmerson Professional Tools - Rockford CTSC | Rockford | 20–99 | ◐ LIKELY ACTIVE |
| EPEmerson Professional Tools - Rockford TEC | Rockford | 20–99 | ◐ LIKELY ACTIVE |
| HTHydraulic Technologies USA LLC | Rockford | — | ◐ LIKELY ACTIVE |
| RMReg-Ellen Machine Tool Corporation | Rockford | 20–99 | ◐ LIKELY ACTIVE |
| RCRockford CTSC | Rockford | 20–99 | ◐ LIKELY ACTIVE |
| RTRockford TEC | Rockford | 20–99 | ◐ LIKELY ACTIVE |
| TPTetra Pak Incorportated Rockford | Rockford | 1–19 | ◐ LIKELY ACTIVE |
| ASAmerican Shaft CO | Rockford | — | ◇ UNVERIFIED |
| FAForte Automation Systems, INC. | Rockford | — | ◇ UNVERIFIED |
| HMHeritage Mold, Incorporated | Rockford | — | ◇ UNVERIFIED |
| IMIndustrial Molds, Inc. | Rockford | — | ◇ UNVERIFIED |
| MFMidwest Forging Die Dba Water Works of Rockford | Rockford | — | ◇ UNVERIFIED |
Siemens Industry INC | Rockford | — | ◇ UNVERIFIED |
| SFSpx Flow US LLC | Rockford | — | ◇ UNVERIFIED |