| BDBlackstone Dpw | Hudson | — | ◇ UNVERIFIED |
| BLBraintree Lab | Holbrook | — | ◇ UNVERIFIED |
| BBBrammer Bio Ma LLC | Somerville | — | ◇ UNVERIFIED |
| BCButcher CO. | Marlborough | — | ◇ UNVERIFIED |
| CCCabot Corporation | Billerica | — | ◇ UNVERIFIED |
| CJCf Jameson | Haverhill | — | ◇ UNVERIFIED |
| CSChase & Sons INC | Randolph, Town of | — | ◇ UNVERIFIED |
| CCChemdesign CORP | Fitchburg | — | ◇ UNVERIFIED |
| CHClean Harbors Andover LLC - Lawrence Facility | Lawrence | — | ◇ UNVERIFIED |
| CHClean Harbors Technical Services - North Andover Facility | North Andover | — | ◇ UNVERIFIED |
| CPConnoisseurs Products CORP | Woburn | — | ◇ UNVERIFIED |
| CCConsolidated Color | Peabody | — | ◇ UNVERIFIED |
| CCContinental Chemical & Coatings | Woburn | — | ◇ UNVERIFIED |
| CPCookson Performance Plastics | Worcester | — | ◇ UNVERIFIED |
| CCCreative Chemicals INC | Holyoke | — | ◇ UNVERIFIED |
| CTCrispr Therapeutics | Framingham | — | ◇ UNVERIFIED |
| CTCri Tech | Hanover | — | ◇ UNVERIFIED |
| CICri-tech INC | Hanover | — | ◇ UNVERIFIED |
| CICytec Industries | Springfield | — | ◇ UNVERIFIED |
| DPDurant Performance Coatings INC | Revere | — | ◇ UNVERIFIED |
| ECEastern Chem Lac | Malden | — | ◇ UNVERIFIED |
| EPEastern Process Company | Hingham | — | ◇ UNVERIFIED |
| EFEast Freetown Auto Salvage LLC | Freetown | — | ◇ UNVERIFIED |
| EPEcm Plastics INC | Worcester | — | ◇ UNVERIFIED |
| EIE I Dupont De Nemours - New Prods Plant | Westwood | — | ◇ UNVERIFIED |
| EIE Ink CORP | Cambridge, Town of | — | ◇ UNVERIFIED |
| EIE Ink Corporation | Cambridge | — | ◇ UNVERIFIED |
| EIEisai INC | Andover | — | ◇ UNVERIFIED |
| EIEisai INC | Andover | — | ◇ UNVERIFIED |
| ESElastomer Solutions INC | Leominster | — | ◇ UNVERIFIED |
| ESEmd Serono Research and Development Inst | Billerica | — | ◇ UNVERIFIED |
| ESEmd Serono Research Institute INC | Rockland | — | ◇ UNVERIFIED |
| ECEmerson & Cuming | Canton | — | ◇ UNVERIFIED |
| ECEmerson & Cuming Composite Materials | Canton | — | ◇ UNVERIFIED |
| ECEmerson & Cuming Microwave Products | Randolph | — | ◇ UNVERIFIED |
| EEntegris | Bedford | — | ◇ UNVERIFIED |
| EIErcon INC | Wareham | — | ◇ UNVERIFIED |
| FSFiberspar Spoolable Products INC | West Wareham | — | ◇ UNVERIFIED |
| FCFlo Chemical CORP | Ashburnham | — | ◇ UNVERIFIED |
| FRFore River Shipment & Iron Works INC | Quincy | — | ◇ UNVERIFIED |
| FRFormer Rohm Tech INC Facility | Malden | — | ◇ UNVERIFIED |
| FSFuller System INC | Woburn | — | ◇ UNVERIFIED |
| FCFunctional Coatings | Newburyport | — | ◇ UNVERIFIED |
| GAGcp Applied Technologies INC | Wilmington | — | ◇ UNVERIFIED |
| GAGcp Applied Technologies INC. | Cambridge | — | ◇ UNVERIFIED |
| GIGe Ionics | Watertown | — | ◇ UNVERIFIED |
| GCGenzyme CORP | Allston | — | ◇ UNVERIFIED |
| GDGenzyme Drug Discovery & Development | Waltham | — | ◇ UNVERIFIED |
| GAGillette Andover Manufacturing Center | Andover | — | ◇ UNVERIFIED |
| GCGloucester Company | Franklin | — | ◇ UNVERIFIED |