| CTCeramic to Metal Seals, INC. | Winchester | MA | Computer and Electronic Product Manufacturing334419 | 1-19 | ◐ LIKELY ACTIVE |
| GAGalvanic Applied Sciences USA | North Billerica | MA | Computer and Electronic Product Manufacturing334513 | 1-19 | ◐ LIKELY ACTIVE |
| PSPrecision Sensing Devices INC | Medfield | MA | Computer and Electronic Product Manufacturing334516 | 1-19 | ◐ LIKELY ACTIVE |
| SCSky Computers, INC. | Chelmsford | MA | Computer and Electronic Product Manufacturing334412 | 1-19 | ◐ LIKELY ACTIVE |
| CMCsa Medical INC | Lexington | MA | Computer and Electronic Product Manufacturing334510 | 1-19 | ◇ UNVERIFIED |
| DDatel | Mansfield | MA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| ECEmx Controls | Uxbridge | MA | Computer and Electronic Product Manufacturing334512 | 1-19 | ◇ UNVERIFIED |
| SLSheaumann Laser INC | Marlborough | MA | Computer and Electronic Product Manufacturing334413 | 20-99 | ◇ UNVERIFIED |
| STSolace Therapeutics INC | Framingham | MA | Computer and Electronic Product Manufacturing334510 | 1-19 | ◇ UNVERIFIED |
| TFThermo Fisher Scientific INC | Franklin | MA | Computer and Electronic Product Manufacturing334516 | — | ◇ UNVERIFIED |
| ACAccuprobe CORP | Salem | MA | Computer and Electronic Product Manufacturing334515 | 20-99 | ◐ LIKELY ACTIVE |
| AMAllegro MicroSystems (Marlborough) | Marlborough | MA | Computer and Electronic Product Manufacturing334413 | 100-499 | ◐ LIKELY ACTIVE |
| ATAlpha Tau Medical INC | Lawrence | MA | Computer and Electronic Product Manufacturing334517 | 1-19 | ◐ LIKELY ACTIVE |
| ADAnalog Devices Federal LLC | Chelmsford | MA | Computer and Electronic Product Manufacturing334413 | — | ◐ LIKELY ACTIVE |
| AIAnduril Industries Quincy | Quincy | MA | Computer and Electronic Product Manufacturing334511 | 100-499 | ◐ LIKELY ACTIVE |
| APAst Products, INC | Billerica | MA | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| AFAuburn Filtersense LLC | Beverly | MA | Computer and Electronic Product Manufacturing334513 | 20-99 | ◐ LIKELY ACTIVE |
| ALAutonodyne LLC | Boston | MA | Computer and Electronic Product Manufacturing334511 | 100-499 | ◐ LIKELY ACTIVE |
| BBoston | Marlborough | MA | Computer and Electronic Product Manufacturing334413 | 1-19 | ◐ LIKELY ACTIVE |
| CDCourtsmart Digital Systems, INC. | North Chelmsford | MA | Computer and Electronic Product Manufacturing334310 | 20-99 | ◐ LIKELY ACTIVE |
| CBCpi Beverly Microwave Division | Beverly | MA | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| CICristek Interconnects, LLC | North Billerica | MA | Computer and Electronic Product Manufacturing334419 | — | ◐ LIKELY ACTIVE |
| FHFujifilm Healthcare Americas Corporation Lexington | Lexington | MA | Computer and Electronic Product Manufacturing334510 | 500+ | ◐ LIKELY ACTIVE |
| GDGeneral Dynamics Mission Systems, INC. | Quincy | MA | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| GDGeneral Dynamics Mission Systems, INC. | Taunton | MA | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| HPHewlett Packard | Marlborough | MA | Computer and Electronic Product Manufacturing334111 | — | ◐ LIKELY ACTIVE |
| LSLake Shore Cryotronics Woburn | Woburn | MA | Computer and Electronic Product Manufacturing334419 | 20-99 | ◐ LIKELY ACTIVE |
| LILase Innovation INC | Waltham | MA | Machinery Manufacturing333310 | — | ◐ LIKELY ACTIVE |
| LMLockheed Martin Corporation | Andover | MA | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| LILundey, INC. | Attleboro | MA | Computer and Electronic Product Manufacturing334416 | 1-19 | ◐ LIKELY ACTIVE |
| MEMagnetika East Limited Partnership | Marlborough | MA | Computer and Electronic Product Manufacturing334416 | 1-19 | ◐ LIKELY ACTIVE |
| MIMay Institute | Randolph | MA | Computer and Electronic Product Manufacturing334412 | — | ◐ LIKELY ACTIVE |
| MIMicrofab INC | Amesbury | MA | Computer and Electronic Product Manufacturing334419 | — | ◐ LIKELY ACTIVE |
| MCMicrosemi CORP - Massachusetts | Lowell | MA | Computer and Electronic Product Manufacturing334412 | — | ◐ LIKELY ACTIVE |
| MIMicroway, INC. | Plymouth | MA | Computer and Electronic Product Manufacturing334111 | 1-19 | ▲ REPORTED CLOSED |
| MWMillimeter Wave Systems LLC | Amherst | MA | Computer and Electronic Product Manufacturing334419 | 1-19 | ◐ LIKELY ACTIVE |
| MSMontrose School Campus Improvement Project | Medfield | MA | Computer and Electronic Product Manufacturing334510 | — | ◐ LIKELY ACTIVE |
| NINetbio INC | Waltham | MA | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| NMNova Medical INC | Wilmington | MA | Computer and Electronic Product Manufacturing334510 | — | ◐ LIKELY ACTIVE |
| OIOptogration, INC. | Wilmington | MA | Computer and Electronic Product Manufacturing334413 | — | ◐ LIKELY ACTIVE |
| RSRapiscan Systems Trace Facility | Andover | MA | Computer and Electronic Product Manufacturing334516 | 20-99 | ◐ LIKELY ACTIVE |
| RFRaytheon Former Waltham Facil | Waltham | MA | Computer and Electronic Product Manufacturing334290 | — | ◐ LIKELY ACTIVE |
| RARigaku Analytical Devices INC | Wilmington | MA | Computer and Electronic Product Manufacturing334516 | 20-99 | ◐ LIKELY ACTIVE |
| SSSpatial Surgical LLC | Shrewsbury | MA | Computer and Electronic Product Manufacturing334510 | 1-19 | ◐ LIKELY ACTIVE |
| SISuperlogics Incorporated | Natick | MA | Computer and Electronic Product Manufacturing334111 | 20-99 | ◐ LIKELY ACTIVE |
| TITeledyne Instruments, INC. | North Falmouth | MA | Computer and Electronic Product Manufacturing334290 | — | ◐ LIKELY ACTIVE |
| TFThermo Fisher PAI | Tewksbury | MA | Computer and Electronic Product Manufacturing334413 | 100-499 | ◐ LIKELY ACTIVE |
| TOThermo Orion INC | Chelmsford | MA | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| VCVector Controls INC | Newton | MA | Computer and Electronic Product Manufacturing334511 | 1-19 | ◐ LIKELY ACTIVE |
| AEAesco Electronics | Taunton | MA | Computer and Electronic Product Manufacturing334412 | — | ◐ LIKELY ACTIVE |