| WRWellesley Rosewood Maynard Mills | Maynard | MA | Computer and Electronic Product Manufacturing334411 | — | ◇ UNVERIFIED |
| WRWyeth Research | Cambridge | MA | Computer and Electronic Product Manufacturing334516 | — | ◇ UNVERIFIED |
| 1C109 Constitution Franklin MA | Franklin | MA | Computer and Electronic Product Manufacturing334112 | 20-99 | ◐ LIKELY ACTIVE |
| 1S125 Summer Street Boston, MA | Boston | MA | Computer and Electronic Product Manufacturing334413 | 100-499 | ◐ LIKELY ACTIVE |
| 1A1 Analog Way | Wilmington | MA | Computer and Electronic Product Manufacturing334413 | 500+ | ◐ LIKELY ACTIVE |
| 2A20 Alpha Rd. Chelmsford, MA | Chelmsford | MA | Computer and Electronic Product Manufacturing334413 | 100-499 | ◐ LIKELY ACTIVE |
| 2E2 Elizabeth | Chelmsford | MA | Computer and Electronic Product Manufacturing334413 | 100-499 | ◐ LIKELY ACTIVE |
| 9H908 Hq | Burlington | MA | Computer and Electronic Product Manufacturing334516 | 100-499 | ◐ LIKELY ACTIVE |
| AHAccure Health INC | Cambridge | MA | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| ASAdaptas Solutions, LLC | Palmer | MA | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| ASAmerican Superconductor Corporation- Westminster, Massachusetts | Westminster | MA | Computer and Electronic Product Manufacturing334511 | 20-99 | ◐ LIKELY ACTIVE |
| APAmphenol PCD | Beverly, United States | MA | Computer and Electronic Product Manufacturing334417 | 100-499 | ◐ LIKELY ACTIVE |
| APAmphenol Pcd INC | Beverly | MA | Computer and Electronic Product Manufacturing334417 | — | ▲ REPORTED CLOSED |
| ATAndor Technology, INC. | Concord | MA | Computer and Electronic Product Manufacturing334516 | — | ▲ REPORTED CLOSED |
| AAndover | Andover | MA | Computer and Electronic Product Manufacturing334413 | 100-499 | ◐ LIKELY ACTIVE |
| AFAndover Facility HQ | Andover | MA | Computer and Electronic Product Manufacturing334111 | 100-499 | ◐ LIKELY ACTIVE |
| AIAnduril Industries, INC. | Waltham | MA | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| AIArcadian Instruments LLC | Boston | MA | Computer and Electronic Product Manufacturing334515 | — | ◐ LIKELY ACTIVE |
| ATAxiom Technology, INC U.s.a | Methuen | MA | Computer and Electronic Product Manufacturing334118 | — | ◐ LIKELY ACTIVE |
| BSBAE Systems Electronic Systems LEX | Lexington | MA | Computer and Electronic Product Manufacturing334419 | 20-99 | ◐ LIKELY ACTIVE |
| BSBionet Sonar, INC. | Burlington | MA | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| BNBms Nat | Cambridge | MA | Computer and Electronic Product Manufacturing334516 | 1-19 | ◐ LIKELY ACTIVE |
| BOBoston Office (NAT) | Marlborough | MA | Computer and Electronic Product Manufacturing334516 | 20-99 | ◐ LIKELY ACTIVE |
Bruker BioSpin Corporation - Southborough | Southborough | MA | Computer and Electronic Product Manufacturing334516 | 1-19 | ◐ LIKELY ACTIVE |
| CWCanton Warehouse | Canton | MA | Computer and Electronic Product Manufacturing334516 | 1-19 | ◐ LIKELY ACTIVE |
| CICerebloom, INC. | Belmont | MA | Computer and Electronic Product Manufacturing334510 | — | ◐ LIKELY ACTIVE |
| C7Chicopee 711 | Chicopee | MA | Computer and Electronic Product Manufacturing334516 | 20-99 | ◐ LIKELY ACTIVE |
| CICircuithub, INC | S. Deerfield | MA | Computer and Electronic Product Manufacturing334418 | — | ◐ LIKELY ACTIVE |
| CWCoherent Woburn | Woburn | MA | Computer and Electronic Product Manufacturing334413 | 1-19 | ◐ LIKELY ACTIVE |
| CLComfortray LLC | Somerville | MA | Computer and Electronic Product Manufacturing334517 | — | ◐ LIKELY ACTIVE |
ComSonics, Inc. (Shine Wire) | Adams | MA | Computer and Electronic Product Manufacturing334419 | 20-99 | ◐ LIKELY ACTIVE |
| CSCool Steven | Reading | MA | Computer and Electronic Product Manufacturing334519 | — | ◐ LIKELY ACTIVE |
| CECrestron Electronics - Boston, MA | Boston | MA | Computer and Electronic Product Manufacturing334310 | 1-19 | ◐ LIKELY ACTIVE |
| DBDrosera Biotechnologies, INC. | Cambridge | MA | Computer and Electronic Product Manufacturing334516 | — | ◐ LIKELY ACTIVE |
| EIE Ink - South Hadley | South Hadley | MA | Computer and Electronic Product Manufacturing334419 | 100-499 | ◐ LIKELY ACTIVE |
| EIEnumage INC. | Cambridge | MA | Computer and Electronic Product Manufacturing334510 | — | ◐ LIKELY ACTIVE |
| EEwhmib | North Andover | MA | Computer and Electronic Product Manufacturing334419 | 20-99 | ◐ LIKELY ACTIVE |
| ELExclaimer LLC | Boston | MA | Computer and Electronic Product Manufacturing334614 | 20-99 | ◐ LIKELY ACTIVE |
| FMFramingham, MA | Marlborough | MA | Computer and Electronic Product Manufacturing334516 | 500+ | ◐ LIKELY ACTIVE |
| F5Franklin 50 | Franklin | MA | Computer and Electronic Product Manufacturing334112 | 500+ | ◐ LIKELY ACTIVE |
| GDGeneral Dynamics Mission Systems, INC. | Pittsfield | MA | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| GDGeneral Dynamics Mission Systems, INC. | Dedham | MA | Computer and Electronic Product Manufacturing334220 | — | ◐ LIKELY ACTIVE |
| GCGoodrich Corporation | Westford | MA | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| HIHBK, Inc. | Marlborough | MA | Computer and Electronic Product Manufacturing334513 | 20-99 | ◐ LIKELY ACTIVE |
| HCHexcel Corporation | Amesbury | MA | Computer and Electronic Product Manufacturing334511 | 100-499 | ◐ LIKELY ACTIVE |
Hiper Global Us, LLC | Littleton | MA | Computer and Electronic Product Manufacturing334111 | — | ◐ LIKELY ACTIVE |
| HHmapfb2 | Pittsfield | MA | Computer and Electronic Product Manufacturing334511 | 100-499 | ◐ LIKELY ACTIVE |
| HHmapfb3 | Pittsfield | MA | Computer and Electronic Product Manufacturing334511 | 100-499 | ◐ LIKELY ACTIVE |
| HHmapfb4 | Pittsfield | MA | Computer and Electronic Product Manufacturing334511 | 100-499 | ◐ LIKELY ACTIVE |
| HHopkinton | Hopkinton | MA | Computer and Electronic Product Manufacturing334516 | 100-499 | ◐ LIKELY ACTIVE |