| AIArtisan Industries Incorporated | Waltham | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| BDBecton Dickinson & CO Acutecare | Waltham | MA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| CWCcnne Waltham | Waltham | MA | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
| GDGenzyme Drug Discovery & Development | Waltham | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LFLongview Fibre Company | Waltham | MA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| NINanostone INC. | Waltham | MA | Machinery Manufacturing333310 | — | ◇ UNVERIFIED |
| PCPolaroid Corporation | Waltham | MA | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| PPolaroid (former) | Waltham | MA | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| RCRaytheon Company Mpt | Waltham | MA | Computer and Electronic Product Manufacturing334411 | — | ◇ UNVERIFIED |
| SSanofi | Waltham | MA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| STStandard Thomson CORP | Waltham | MA | Machinery Manufacturing333998 | — | ◇ UNVERIFIED |
| BMBoynton Machine Company INC | Waltham | MA | Machinery Manufacturing333318 | 1-19 | ◇ UNVERIFIED |
| CMClematis Machine and Fixture | Waltham | MA | Fabricated Metal Product Manufacturing332710 | 1-19 | ◇ UNVERIFIED |
| CLCounteredge, LLC | Waltham | MA | Nonmetallic Mineral Product Manufacturing327991 | 1-19 | ◇ UNVERIFIED |
| LELectro Engineering | Waltham | MA | Fabricated Metal Product Manufacturing332999 | 1-19 | ◇ UNVERIFIED |
| MIMarketwise Inc. | Waltham | MA | Furniture and Related Product Manufacturing337215 | 1-19 | ◇ UNVERIFIED |
| PCPrestige Custom Mirror & Glass, INC. | Waltham | MA | Nonmetallic Mineral Product Manufacturing327215 | 1-19 | ◇ UNVERIFIED |
| TITecogen INC | Waltham | MA | Machinery Manufacturing333415 | 20-99 | ◇ UNVERIFIED |
| 5W580 Winter Street LLC | Waltham | MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AAllay | Waltham | MA | Beverage and Tobacco Product Manufacturing312130 | — | ◇ UNVERIFIED |
| ATAmide Technologies INC | Waltham | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| AIAvedro INC | Waltham | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| BPBbc Printing and Products INC | Waltham | MA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| BIBgi, Incorporated | Waltham | MA | Computer and Electronic Product Manufacturing334519 | — | ◇ UNVERIFIED |
| BCBrass Clothing LLC | Waltham | MA | Apparel Manufacturing315990 | — | ◇ UNVERIFIED |
| CAC and K Components LLC | Waltham | MA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| CIComprint, INC. | Waltham | MA | Textile Mills313310 | — | ◇ UNVERIFIED |
| CCorindus | Waltham | MA | Computer and Electronic Product Manufacturing334510 | — | ◇ UNVERIFIED |
| ECExodus Communications | Waltham | MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| GFG Finkenbeiner INC | Waltham | MA | Nonmetallic Mineral Product Manufacturing327212 | — | ◇ UNVERIFIED |
| GCGlobal Center INC | Waltham | MA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
 Hardric Laboratories | Waltham | MA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| JMJoe's Manufacturing Company, INC. | Waltham | MA | Food Manufacturing311520 | — | ◇ UNVERIFIED |
| LLiftlab | Waltham | MA | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| LMLight Metal Platers | Waltham | MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| LHLizzy's Homemade Ice Cream LLC | Waltham | MA | Food Manufacturing311520 | — | ◇ UNVERIFIED |
| LTLyra Therapeutics | Waltham | MA | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| MBManus Bio | Waltham | MA | Food Manufacturing311942 | — | ◇ UNVERIFIED |
| MAMarble and Granite International, INC. | Waltham | MA | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MRMj Research, INC. | Waltham | MA | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| MModerna | Waltham | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| QTQuantum Trust LLC | Waltham | MA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| RCRidgeline Capital Holding Corp. | Waltham | MA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| RMRoche Molecular Systems | Waltham | MA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| UOUsdol Osha - Andover | Waltham | MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| VIVulcanforms INC. | Waltham | MA | Machinery Manufacturing333249 | — | ◇ UNVERIFIED |
| YBYum Bunnies Cakery, inc. | Waltham | MA | Food Manufacturing311813 | — | ◇ UNVERIFIED |
