Pharmaceutical companies in Maryland: vaccines, cell therapy and the I-270 research corridor

This report is for scientists, operators and engineers looking at Maryland employers, for suppliers and contract partners, and for sellers working the corridor from Bethesda to Frederick and Baltimore. Plant counts come from the Census Bureau, named sites from FDA's registration file and company facts from each 10-K.

Maryland's numbers

County Business Patterns (CBP) 2023, NAICS 3254 (Pharmaceutical and Medicine Manufacturing):

The two unpublished cells hold 3 establishments between them (our subtraction from the total). So at least 12 Maryland plants have 100 or more employees, and 21 have fewer than 20.

What they make sets the pay level. Ten establishments make biological products such as vaccines, blood products and cell and gene therapies (325414) and employ 2,563 people; 20 make finished-dose pharmaceuticals (325412) with 1,896. Diagnostic substances (8 establishments) and medicinal chemicals (6) have high-noise employee totals.

Where the plants are

"Not reported" means the Census Bureau published the total but flagged it as high-noise: its confidentiality noise moved the value by 5% or more. The other 10 establishments are in jurisdictions with one or two plants each, including Baltimore City, which the Census Bureau doesn't publish.

The research corridor

Code 3254 counts manufacturing sites only, and CBP's unit is a location with paid staff rather than a company, and the self-employed aren't in it. Head offices and labs are classed elsewhere, and in Maryland the labs are the larger part. The same 2023 data shows 282 biotechnology R&D establishments (NAICS 541714) with 7,304 employees statewide:

Montgomery County has 156 labs but only 579 drug plant jobs: Rockville, Gaithersburg and Germantown are research towns that do some manufacturing, while Frederick is the reverse. Maryland also had 108 drug wholesale establishments (NAICS 424210) with 6,226 employees. The Maryland Department of Commerce, citing the Maryland Life Sciences Directory, says more than 1,800 life sciences companies are based in the state.

Sites in FDA's registration file

FDA's registration list, the Drug Establishments Current Registration Site (DECRS), held 82 Maryland registrations in our count of the 30 October 2026 download: 43 that make finished drugs or active ingredients, 14 medical gas suppliers (our classification by firm name), 9 packers or relabelers, 6 testing labs and 10 others, mostly medicated feed mills on the Eastern Shore. Baltimore (20) and Frederick (9) have the most.

Gilead's 10-K says its Frederick facility handles "clinical and commercial manufacturing and processing of our cell therapy products." FDA doesn't approve a site by registering it; the company files the registration itself.

Listed drugmakers headquartered in Maryland

SEC EDGAR shows 21 listed companies in SIC codes 2833 to 2836 with a Maryland business address. The largest, each checked in its latest 10-K:

United Therapeutics lists a second principal office in Durham, North Carolina. Champions Oncology, which EDGAR files under Baltimore, gives Hackensack, New Jersey, on its latest 10-K, so it's left out. AstraZeneca, GSK and the other global companies with Maryland sites rank in the largest pharmaceutical companies.

Checking a Maryland company

• Licence. FDA lists the Maryland Board of Pharmacy as the agency that licenses wholesale drug distributors; look up any distributor or logistics partner on the board's license verification page.
• FDA record. FDA's Data Dashboard shows inspections, warning letters and recalls by site.
• The network. The Maryland Tech Council, the state's life sciences and technology association in Rockville, runs a member directory, a job board and the Bio Innovation Conference.

Selling to Maryland drug companies

Worked example: a biosafety cabinet certifier

Illustrative example. The firm and its prices are invented; the counts come from CBP 2023 and FDA's registration file.

Monocacy Cert (monocacycert.example) tests and certifies biosafety cabinets and cleanrooms.

1. Count the rooms. The 184 biotech R&D establishments in Montgomery and Frederick counties plus the 43 manufacturing registrations statewide.
2. Rank by need. Cell therapy and viral vector sites certify more often and pay for speed; small labs need one or two cabinets done a year.
3. Do the arithmetic. Signing 25 labs at $2,400 a year and 3 plants at $45,000 brings $195,000 of recurring work.

Finding which labs have just moved or expanded is the slow part; Bebop researches each account and flags new leases and hires.

Next step: see the full picture of the state's research labs in the Maryland biotech market report.