Naiad Dynamics US INC | Shelton | 20–99 | ● ACTIVE |
Calmare Therapeutics Incorporated | Shelton | — | ● ACTIVE |
| HKHaydon Kerk Motion Solutions, INC. | Waterbury | — | ● ACTIVE |
Kimtron, INC. | Oxford | — | ● ACTIVE |
| MIMicrotech INC | Cheshire | — | ● ACTIVE |
Quality Coils, Incorporated | Bristol | — | ● ACTIVE |
Ace and Company, INC | Naugatuck | — | ● ACTIVE |
Acknowledgement Circuit Professional Limited Liability CO | Bristol | — | ● ACTIVE |
Buck Scientific Instruments, LLC | Ansonia | — | ● ACTIVE |
| CTComet Technologies Usa, INC. | Shelton | — | ● ACTIVE |
| CMConnecticut Microwave Corporation | Cheshire | — | ● ACTIVE |
Graywolf Sensing Solutions, LLC | Shelton | — | ● ACTIVE |
Hipotronics INC | Shelton | — | ● ACTIVE |
Intrasonics, INC. | Thomaston | — | ● ACTIVE |
Microboard Processing, INC. | Seymour | — | ● ACTIVE |
Mil-con INC | Naugatuck | — | ● ACTIVE |
Perkinelmer U.s. LLC | Shelton | — | ● ACTIVE |
Pro Scientific, INC. | Oxford | — | ● ACTIVE |
The Phoenix Company of Chicago, INC. | Naugatuck | — | ● ACTIVE |
| VIVideo Insights, LLC | Southbury | — | ● ACTIVE |
| PCPalco Connector, INC | Naugatuck | 20–99 | ◐ LIKELY ACTIVE |
| AMAdvanced Micro Controls, INC. | Terryville | — | ◐ LIKELY ACTIVE |
| CCClassic Coil Company | Bristol | 20–99 | ◐ LIKELY ACTIVE |
| AIAi-tek Instruments LLC | Cheshire | — | ◐ LIKELY ACTIVE |
| AIAtlantic Inertial Systems INC | Cheshire | — | ◐ LIKELY ACTIVE |
| PEPerkin Elmer Health Sciences | Shelton | — | ◐ LIKELY ACTIVE |
| BBBristol Babcock Inc., Div of Emerson | Watertown | — | ◇ UNVERIFIED |
Microboard Processing INC. | Seymour | — | ◇ UNVERIFIED |
| CHCt112 Haydon Kerk | Waterbury | 100–499 | ◐ LIKELY ACTIVE |
| CACt194 Ametek Magnetrol Usa, LLC | Naugatuck | 20–99 | ◐ LIKELY ACTIVE |
| GDGeneral Datacomm, INC. | Oxford | — | ◐ LIKELY ACTIVE |
| TSThe Siemon Company- Dynamic | Watertown | 20–99 | ◐ LIKELY ACTIVE |
| VAVishay Americas | Shelton | 20–99 | ◐ LIKELY ACTIVE |
| VVVishay Vitramon Shelton | Shelton | 1–19 | ◐ LIKELY ACTIVE |
| PHPerkinelmer Health Sciences Puerto Rico, LLC | Shelton | — | ◐ LIKELY ACTIVE |
| LSLocknetics Security Engineering | Bristol | — | ◇ UNVERIFIED |
| LLLowcountry Legacy Ventures LLC | Shelton | — | ◇ UNVERIFIED |
| NMNewmark Medical Components, INC. | Waterbury | — | ◇ UNVERIFIED |
| SCSiemon CO | Watertown | — | ◇ UNVERIFIED |
| TETyco Electronics Waterbury | Waterbury | — | ◇ UNVERIFIED |