Company lists · Data refreshed September 2026

Top 25 Contract manufacturing organizations based in the United States

Name: Contract manufacturing organizations based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 1,245 companies tracked

RevenueBase identified 1,245 contract manufacturing organizations headquartered in the United States as of September 2026 and tracks 84,703 professional contacts across them, including 23,889 with verified work emails. San Diego is the largest hub.

This list covers contract manufacturing organizations headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

1,245Companies

84,703Contacts tracked

23,889Verified emails

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The 25 largest contract manufacturing organizations based in the United States

Ranked by team size

Top 25 of 1,245 contract manufacturing organizations based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to contract manufacturing organizations: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Plexus Corp	Indirect evidence	Neenah, NC, United StatesHQ checked Sep 16, 2026	10001+	8,149 contacts →
	Indirect evidence “Since 1979, Plexus has been partnering with companies to create the products that build a better world.” Source: RevenueBase Database · checked Sep 16, 2026
2	PCI Pharma Services	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 16, 2026	5,001-10,000	4,342 contacts →
	Indirect evidence “We are PCI Pharma Services.” Source: RevenueBase Database · checked Sep 16, 2026
3	CURIA	Strong evidence	Albany, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,975 contacts →
	Strong evidence “Curia is a Contract Development and Manufacturing Organization with over 30 years of experience, an integrated network of 25 global sites and 3,500 employees partnering with…” Source: RevenueBase Database · checked Sep 16, 2026
4	AGC Biologics	Strong evidence	Bothell, WA, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,510 contacts →
	Strong evidence “AGC Biologics is a leading global biopharmaceutical Contract Development and Manufacturing Organization (CDMO) with a strong commitment to delivering the highest standard of…” Source: RevenueBase Database · checked Sep 16, 2026
5	Phillips Medisize	Strong evidence	Hudson, WI, United StatesHQ checked Sep 16, 2026	5,001-10,000	2,261 contacts →
	Strong evidence “As a contract development and manufacturing organization (CDMO), the world’s leading pharmaceutical, medtech and in vitro diagnostic companies trust us to help them design and…” Source: RevenueBase Database · checked Sep 16, 2026
6	Hovione	Indirect evidence	East Windsor, NJ, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,213 contacts →
	Indirect evidence “At Hovione, we help partners turn scientific innovation into medicines that reach patients around the world.” Source: RevenueBase Database · checked Sep 16, 2026
7	Patheon	Partial evidence	Waltham, MA, United StatesHQ checked Sep 16, 2026	10001+	2,004 contacts →
	Partial evidence “Thermo Fisher Scientific provides industry-leading pharma services for drug development, clinical trial logistics, and commercial manufacturing through our Patheon™ brand.” Source: RevenueBase Database · checked Sep 16, 2026
8	Cambrex	Strong evidence	East Rutherford, NJ, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,294 contacts →
	Strong evidence “Cambrex is a leading global contract development and manufacturing organization (CDMO) that provides drug substance development and manufacturing across the entire drug lifecycle…” Source: RevenueBase Database · checked Sep 16, 2026
9	Resilience	Strong evidence	Blue Ash, OH, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,270 contacts →
	Strong evidence “Resilience is a North American contract development and manufacturing organization (CDMO) focused on delivering high-quality, scalable manufacturing solutions for advanced…” Source: RevenueBase Database · checked Sep 16, 2026
10	Alcami Corporation	Strong evidence	Wilmington, NC, United StatesHQ checked Sep 16, 2026	501-1,000	991 contacts →
	Strong evidence “Alcami is a US-based contract development and manufacturing organization headquartered in NC with 45+ years of experience advancing pharmaceuticals and biologics from development…” Source: RevenueBase Database · checked Sep 16, 2026
11	Freudenberg Medical	Indirect evidence	Beverly, MA, United StatesHQ checked Sep 16, 2026	1,001-5,000	890 contacts →
	Indirect evidence “Your medical device in safe hands.” Source: RevenueBase Database · checked Sep 16, 2026
12	Simtra Biopharma Solutions	Partial evidence	Parsippany, NJ, United StatesHQ checked Sep 16, 2026	1,001-5,000	850 contacts →
	Partial evidence “As a premier, independently owned CDMO with over 65 years of sterile injectable manufacturing experience, Simtra BioPharma Solutions offers world-class cGMP sterile fill/finish…” Source: RevenueBase Database · checked Sep 16, 2026
13	Keytronic	Partial evidence	Spokane Valley, WA, United StatesHQ checked Sep 16, 2026	1,001-5,000	819 contacts →
	Partial evidence “Keytronic is a value-added contract manufacturer to some of the world’s leading OEMs.” Source: RevenueBase Database · checked Sep 16, 2026
14	Material In Motion	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	668 contacts →
	Indirect evidence “At Material in Motion we are dedicated to serve our customers through a wide range of custom fit services that address their needs and contribute to the ever-growing success of…” Source: RevenueBase Database · checked Sep 16, 2026
15	Accumed Corp	Strong evidence	Mocksville, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	559 contacts →
	Strong evidence “AccuMED Corp is a contract manufacturing partner to major medical device companies, providing exceptional, customer-centric solutions of the highest quality on time and at…” Source: RevenueBase Database · checked Sep 16, 2026
16	Avara Pharmaceutical Services	Strong evidence	Norman, OK, United StatesHQ checked Sep 16, 2026	501-1,000	545 contacts →
	Strong evidence “Headquartered in Norman, Oklahoma, Avara Pharmaceutical Services is an international contract manufacturing organization committed to delivering quality clinical to…” Source: RevenueBase Database · checked Sep 16, 2026
17	SK Pharmteco	Strong evidence	Rancho Cordova, CA, United StatesHQ checked Sep 16, 2026	1,001-5,000	540 contacts →
	Strong evidence “Established in 2019 by SK Inc, SK pharmteco is a global contract development and manufacturing organization (CDMO) with operations across the U.S, Europe, and South Korea.” Source: RevenueBase Database · checked Sep 16, 2026
18	Adare Pharma Solutions	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 16, 2026	501-1,000	487 contacts →
	Partial evidence “Adare Pharma Solutions is a global technology-driven CDMO providing end-to-end integrated services, from product development through commercial manufacturing and packaging, with…” Source: RevenueBase Database · checked Sep 16, 2026
19	Lannett Company, INC	Indirect evidence	Trevose, PA, United StatesHQ checked Sep 16, 2026	1,001-5,000	472 contacts →
	Indirect evidence “Founded in 1942, Lannett Company, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
20	Evergen	Strong evidence	Alachua, FL, United StatesHQ checked Sep 16, 2026	501-1,000	470 contacts →
	Strong evidence “Evergen is a leading Contract Development and Manufacturing Organization (CDMO) pushing the boundaries of innovation and tissue engineering to meet patient needs in regenerative…” Source: RevenueBase Database · checked Sep 16, 2026
21	DPT Laboratories	Strong evidence	San Antonio, TX, United StatesHQ checked Sep 16, 2026	501-1,000	469 contacts →
	Strong evidence “As a leading contract development and manufacturing organization, DPT is recognized for our expertise in semi-solid and liquid dosage forms, with an established legacy of…” Source: RevenueBase Database · checked Sep 16, 2026
22	XLC Services	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 16, 2026	1,001-5,000	462 contacts →
	Partial evidence “XLC Services, LLC is a single-source provider of distribution and manufacturing support.” Source: RevenueBase Database · checked Sep 16, 2026
23	Abzena	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 16, 2026	501-1,000	456 contacts →
	Indirect evidence “Abzena is the leading end-to-end bioconjugate, ADC, and complex biologics CDMO + CRO.” Source: RevenueBase Database · checked Sep 16, 2026
24	MSI Express	Strong evidence	Portage, IN, United StatesHQ checked Sep 16, 2026	1,001-5,000	443 contacts →
	Strong evidence “MSI Express is a strategic, innovative contract manufacturing and packaging company.” Source: RevenueBase Database · checked Sep 16, 2026
25	Catalent Pharma Solutions	Indirect evidence	Somerset, NJ, United StatesHQ checked Sep 16, 2026	10001+	441 contacts →
	Indirect evidence “Catalent Inc.(NYSE: CTLT), an S&P 500® company, is the global leader in enabling pharma, biotech, and consumer health partners to optimize product development, launch, and full…” Source: RevenueBase Database · checked Sep 16, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: contract manufacturing organizations. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names contract manufacturing organizations.
Partial evidence: Its own public description names part of contract manufacturing organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name contract manufacturing organizations. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,245 contract manufacturing organizations based in the United States

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Contract manufacturing organizations based in the United States at a glance

As of Sep 16, 2026

28.2%Verified-email coverage

68.0Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · San Diego

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

377

11-50

425

51-200

289

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,245 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among contract manufacturing organizations, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “contract manufacturing organizations”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names contract manufacturing organizations), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among contract manufacturing organizations, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 23,889 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names contract manufacturing organizations, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many contract manufacturing organizations are there based in the United States?

RevenueBase identified 1,245 contract manufacturing organizations headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Plexus Corp, headquartered in Raleigh, tops this list with the largest team on record.

Which city has the most contract manufacturing organizations?

San Diego leads with 17 headquartered companies, followed by New York (15) and Fremont (12).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 23,889 verified decision-maker contacts tracked across these 1,245 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.