| ABAdvanced Bioscience Laboratories, INC | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| ARAlexandria Real Estate Equities, INC. | Rockville | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| EBEmergent Biosolutions | Rockville | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| GUGlaxosmithkline USA | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| HGHuman Genome Sciences, Inc., Small Scale Manufacturing | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| HGHuman Genome Sciences, Plant 1 | Rockville | MD | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| MPMccormick Paint Works Company | Rockville | MD | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| RIRegenxbio, INC. | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| RFRockville Fuel and Feed | Rockville | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SCSchuster Concrete Ready Mix Llc-southlawn Ln | Rockville | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SLSmith Lithograph | Rockville | MD | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| ARAmerican Reprographics Inc | Rockville | MD | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| AGAmerica's Granite INC. | Rockville | MD | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| BCBaklava Couture LLC | Rockville | MD | Food Manufacturing311821 | — | ◇ UNVERIFIED |
| BIBethesda Iron Works, INC. | Rockville | MD | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| BCBread Corner Inc. | Rockville | MD | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| CBCangene Biopharma, LLC | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| ILInterbiome, LLC | Rockville | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| MIMachfu INC | Rockville | MD | Computer and Electronic Product Manufacturing334118 | — | ◇ UNVERIFIED |
| MMMarble Mantel, INC. | Rockville | MD | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MMasPanadas | Rockville | MD | Food Manufacturing311412 | — | ◇ UNVERIFIED |
| MBMobile Blanco INC | Rockville | MD | Computer and Electronic Product Manufacturing334220 | — | ◇ UNVERIFIED |
| MPMontgomery Printing Solutions LLC | Rockville | MD | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| NCN.T.Dental Corp. | Rockville | MD | Miscellaneous Manufacturing339116 | — | ◇ UNVERIFIED |
| RIRegenxbio, INC | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SMSnelson Media Inc | Rockville | MD | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| SPSpectrum Printing | Rockville | MD | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| SBSunflower Bakeries, LLC | Rockville | MD | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| TDT Donut Operating LLC | Rockville | MD | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| TRTrue Respite Brewing Company, LLC | Rockville | MD | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| TRTrue Respite Brewing Company, True Respite Brewing Co., True Respite. | Rockville | MD | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| UOUniversity of Maryland Institute for Bioscience and Biotechnology Research | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| VBVincent Bagels, Inc | Rockville | MD | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| WWWatson Works II LLC | Rockville | MD | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| ZZazBakehouse | Rockville | MD | Food Manufacturing311811 | — | ◇ UNVERIFIED |
