How is growth measured?

1-year change in headcount from licensed B2B firmographic and technographic data, shown as a band. Within a band, larger companies come first. Figures over 200% are estimates.

Job seekers who want companies that are adding people, and B2B sellers, recruiters and agencies looking for companies with new budget.

What do I get for $7?

All 100 companies with website, city, sector, industry, size band, growth band, revenue band and careers link, as CSV, Excel and PDF.

Fastest-growing Biotech & Pharma companies in the US (October 2026)

Free top 10 of 100

#	Company	City	Industry	Staff	1-yr growth
1	Synergy Research Centers	San Diego	Research & Development	50-99	200%+ (estimated)
2	Cellanome	Palo Alto	Research & Development	50-99	200%+ (estimated)
3	Novamed	Skokie	Research & Development	250-499	+100–200%
4	Prime Inspections	Katy	Research & Development	250-499	+100–200%
5	Celcuity	Minneapolis	Research & Development	100-249	+100–200%
6	Gemological Science International	New York	Research & Development	100-249	+100–200%
7	Hjfmri	Bethesda	Research & Development	50-99	+100–200%
8	Priovant Therapeutics	Durham	Pharmaceuticals	50-99	+100–200%
9	Saudi Sensing SASSCO	Inwood	Research & Development	50-99	+100–200%
10	Madrigal Pharmaceuticals	Conshohocken	Pharmaceuticals	500-999	+50–100%

Edition October 2026. Source: licensed B2B firmographic and technographic data. Company-level only.

What the data shows

Most common growth band: +20–50% (51 of 100 companies, 51%).
9 of 100 (9%) at least doubled headcount in a year (figures over 200% are estimates).
Biggest industries: Research & Development (64), Pharmaceuticals (36).
San Diego has the most (9 of 100, 9%); the list spans 64 towns and cities.
Size mix: 39 with 50–199, 61 with 200+ (median 259 employees).

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CSV + Excel + PDF with website, size, growth and revenue bands and a careers search link for every company.

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Notes and limits

1-year headcount growth from licensed B2B firmographic and technographic data. Companies with 50–1,000 staff that grew 20%+ in a year. US file: 25 largest metro areas.
Growth is shown as a band: +20–50%, +50–100%, +100–200% or 200%+ (estimated). Within a band, companies are listed largest first; the order inside a band is not a growth ranking.
"200%+ (estimated)" means the growth figure is above 200% and has not been verified; treat it as an estimate.
Likely branches of larger groups, schools, academy trusts, colleges and university units are left out.
Growth is a signal, not a guarantee of open roles or budget.
Company-level data only: no personal contacts.

Related lists

Fast-growing companies in the UK: full list, all sectors (4005 companies)
Fastest-growing Construction companies in the UK (100 companies)
Fastest-growing Consulting companies in the UK (100 companies)
Fastest-growing Engineering & Architecture companies in the UK (100 companies)
Fastest-growing Finance & Insurance companies in the UK (100 companies)
Fastest-growing Healthcare & Care companies in the UK (100 companies)
Fastest-growing Hospitality companies in the UK (100 companies)
Fastest-growing IT Services companies in the UK (100 companies)

All: Fastest-growing companies by industry: UK, US, Netherlands, Canada, Ireland · All global lists

FAQ

How is growth measured?: 1-year change in headcount from licensed B2B firmographic and technographic data, shown as a band. Within a band, larger companies come first. Figures over 200% are estimates.
Who is this for?: Job seekers who want companies that are adding people, and B2B sellers, recruiters and agencies looking for companies with new budget.
What do I get for $7?: All 100 companies with website, city, sector, industry, size band, growth band, revenue band and careers link, as CSV, Excel and PDF.