Herrick Technology Laboratories INC | Manchester | — | ● ACTIVE |
L7tr LLC | Amherst | — | ● ACTIVE |
Microwave Techniques LLC | Nashua | — | ● ACTIVE |
Netzer Precision Position Sensors Usa, INC. | Manchester | — | ● ACTIVE |
Ocean Industries LLC | Hudson | — | ● ACTIVE |
Pacific Defense Strategies INC | Nashua | — | ● ACTIVE |
Positionptt LLC | Bedford | — | ● ACTIVE |
| QLQmagiq LLC | Nashua | — | ● ACTIVE |
Raytheon Company | Pelham | — | ● ACTIVE |
| RLRh Laboratories, INC. | Nashua | — | ● ACTIVE |
Testvonics INC | Peterborough | — | ● ACTIVE |
| IBIntegra Biosciences | Hudson | 100–499 | ◐ LIKELY ACTIVE |
| MBMicro Bends CORP. | Peterborough | 1–19 | ◐ LIKELY ACTIVE |
| TRTech Resources, INC | Milford | 1–19 | ◐ LIKELY ACTIVE |
| ATAirmar Technology Corporation | Milford | 100–499 | ◐ LIKELY ACTIVE |
| CMCustom Manufacturing Services INC | Nashua | 1–19 | ◐ LIKELY ACTIVE |
| AMAllegro MicroSystems (Manchester) | Manchester | 100–499 | ◐ LIKELY ACTIVE |
| JIJmk INC | Amherst | 1–19 | ◐ LIKELY ACTIVE |
| MSMasimo Semiconductor, INC. | Hudson | 20–99 | ◐ LIKELY ACTIVE |
| PHParker Hannifin CORP Chomerics Div | Hudson | — | ◐ LIKELY ACTIVE |
| IEInfinitium Electric INC | Nashua | — | ◐ LIKELY ACTIVE |
| SCSanmina CORP | Manchester | — | ◐ LIKELY ACTIVE |
Brookhaven Instruments CORP. | Nashua | — | ◐ LIKELY ACTIVE |
| HAHj Associates, LLC | Manchester | — | ◐ LIKELY ACTIVE |
| LILadesco, INC. | Manchester | 20–99 | ◐ LIKELY ACTIVE |
| SHSpecial Hermetic Products | Wilton | 20–99 | ◐ LIKELY ACTIVE |
St12 Rf Solutions, INC. | Manchester | — | ◐ LIKELY ACTIVE |
| TRTechnical Research and Manufacturing INC | Bedford | 20–99 | ◇ UNVERIFIED |
| BSBAE Systems Electronic Systems MER | Merrimack | 500+ | ◐ LIKELY ACTIVE |
| BSBae Systems Information & Electronic Systems Integration INC | Hudson | — | ◐ LIKELY ACTIVE |
| CTCircuit Technology LLC | Merrimack | — | ◐ LIKELY ACTIVE |
| CEColonial Electronic Manufacturers INC | Nashua | 20–99 | ◐ LIKELY ACTIVE |
| QIQesidyne INC | Hudson | — | ◐ LIKELY ACTIVE |
| SDSafran Defense & Space, INC. | Bedford | — | ◐ LIKELY ACTIVE |
| TFTeledyne Flir Commercial Systems INC. | Hudson | — | ◐ LIKELY ACTIVE |
| XCXma Corporation | Manchester | 20–99 | ◐ LIKELY ACTIVE |
| HRHudson - Rpm Distributors LLC | Nashua | — | ◐ LIKELY ACTIVE |
| ACAdvanced Circuit Technology INC. | Nashua | — | ◇ UNVERIFIED |
| ESElbit Systems of America Merrimack Operations | Merrimack | — | ◇ UNVERIFIED |
| ECElectropac CO INC | Manchester | — | ◇ UNVERIFIED |
| QIQesidyne INC | Hudson | — | ◇ UNVERIFIED |
| SCSanmina-sci CORP Hadco CORP a Subsidiary | Hudson | — | ◇ UNVERIFIED |
| BSBae Systems Information & Electronic Systems Integration INC | Merrimack | — | ◐ LIKELY ACTIVE |
| EBEagle Biosciences, INC | Amherst | — | ▲ REPORTED CLOSED |
| ESElbit Systems of America - MER | Merrimack | 500+ | ◐ LIKELY ACTIVE |
| EMEngineered Materials Hudson | Hudson | 20–99 | ◐ LIKELY ACTIVE |
| F1Facility 1 | Bedford | 100–499 | ◐ LIKELY ACTIVE |
| GCGentex Corporation-Manchester | Manchester | 100–499 | ◐ LIKELY ACTIVE |
| NSNashua Site | Nashua | 20–99 | ◐ LIKELY ACTIVE |
| NHNh115 Haydon Kerk | Milford | 20–99 | ◐ LIKELY ACTIVE |