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List of companies with in-house R&D in Wisconsin

Tamtam tracks 154 companies with in-house R&D headquartered in Wisconsin. This list ranks the 50 largest by number of employees on LinkedIn, led by Fiserv, University of Wisconsin-Madison and Rockwell Automation. Their median headcount is 3,691. Half of them were founded in 1929 or later. The most common headquarters are Milwaukee (18), Madison (7) and Appleton (2).

馃嚭馃嚫 Wisconsin50 companiesUpdated Nov 11, 2026

The companies in Wisconsin with in-house R&D are mostly large groups, with a strong presence in manufacturing and healthcare. Fiserv is a global technology provider in financial services, while Epic develops healthcare software. Rockwell Automation focuses on connecting human imagination with technology, and SC Johnson manufactures household cleaning products.

A significant pattern in the data is the concentration of headquarters in Milwaukee, indicating a central hub for these large companies within the state. Other prominent cities include Madison and Verona.

#CompanyIndustryHeadquarters EmployeesFounded
1
Fiservfiserv.com

A global technology provider in financial services industry, specializing in payments, processing, risk & compliance, customer management, and business optimization

IT Services and IT Consulting 馃嚭馃嚫 Milwaukee 44,000 1984
2
University of Wisconsin-Madisonwisc.edu

A prestigious public university in Madison, offering a wide range of liberal arts studies, professional programs, and student activities on a sprawling campus

Higher Education 馃嚭馃嚫 Madison 30,836 n/a
3
Rockwell Automationrockwellautomation.com

It connects human imagination with technology potential, enhancing intelligence, connectivity, and productivity through recognized brands like Allen-Bradley and Rockwell Software.

Automation Machinery Manufacturing 馃嚭馃嚫 Milwaukee 22,584 n/a
4
Epicepic.com

Development and implementation of healthcare software used globally by patients and doctors, with training for professionals from diverse backgrounds.

Software Development 馃嚭馃嚫 Verona 17,501 1979
5
Advocate Aurora Healthadvocateaurorahealth.org

An integrated health system providing high-quality care, clinical innovation, and research studies, with a strong focus on academic partnerships and community benefits

Hospitals and Health Care 馃嚭馃嚫 Milwaukee 15,279 2018
6
A. O. Smith Corporationaosmith.com

Manufacturing and distributing residential and commercial water heaters and boilers with innovative, energy-efficient technology across global markets.

Manufacturing 馃嚭馃嚫 Milwaukee 14,023 1874
7
Aurora Health Carecareers.aah.org

Nonprofit integrated health system providing clinical innovation, specialized care, research, education, and community benefits across multiple states.

Hospitals and Health Care 馃嚭馃嚫 Milwaukee 13,816 n/a
8
SC Johnsonscjohnson.com

A leading manufacturer of household cleaning, storage, pest control, air care products worldwide, promoting sustainability and transparency with iconic brands

Manufacturing 馃嚭馃嚫 Racine 13,764 1886
9
Ashley Furniture Industriesashleyfurnitureindustriesllc.com

Design, manufacture, and deliver a broad range of furniture products to retail partners worldwide, focusing on quality and customer satisfaction.

Furniture and Home Furnishings Manufacturing 馃嚭馃嚫 Arcadia 11,618 n/a
10
Harley-Davidson Motor Companyharley-davidson.com

Manufacturing iconic motorcycles embodying adventure and freedom, fostering a unique lifestyle brand with a focus on innovation and culture.

Motor Vehicle Manufacturing 馃嚭馃嚫 Milwaukee 11,289 1903
11
UW Healthuwhealth.org

Integrated academic health system operating multiple hospitals and clinics, providing care to over 832,000 patients annually in Wisconsin and Illinois.

Hospitals and Health Care 馃嚭馃嚫 Madison 10,155 n/a
12
Plexus Corp.plexus.com

A global leader in providing design, development, supply chain solutions, manufacturing, and aftermarket services for companies in complex industries since 1979

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Neenah 9,957 1979
13
Milwaukee Toolbit.ly

Innovative technology-focused company in power, hand tools industry Offers fast-paced design environment, professional development, and empowers leaders to succeed

Manufacturing 馃嚭馃嚫 Brookfield 9,854 1924
14
Oshkosh Corporationoshkoshcorp.com

Design and manufacture advanced industrial equipment using electrification, autonomy, AI, and connectivity for tough jobs worldwide.

Motor Vehicle Manufacturing 馃嚭馃嚫 Oshkosh 7,170 1917
15
Snap-onsnapon.com

Global leader in designing, manufacturing, and marketing tools, equipment, diagnostics, and repair solutions for professionals across various industries worldwide

Machinery Manufacturing 馃嚭馃嚫 Kenosha 7,077 1920
16
Clariosclarios.com

Global leader in advanced energy storage solutions, producing 150 million batteries annually for a third of the world's vehicles Expanding capacity to meet future demand

Motor Vehicle Parts Manufacturing 馃嚭馃嚫 Glendale 6,268 n/a
17
Regal Rexnordmaintenance.regalrexnord.com

Global manufacturer of sustainable solutions for airflow, motion control, power transmission, and power generation in commercial, industrial, and residential settings Headquarters in Milwaukee, Wisconsin

Electric Power Transmission, Control, and Distribution 馃嚭馃嚫 Milwaukee 5,921 1955
18
Marquette Universitymarquette.edu

Catholic Jesuit university serving students, advancing knowledge with diverse undergraduate, graduate, professional programs, dentistry and law schools.

Higher Education 馃嚭馃嚫 Milwaukee 5,579 1881
19
Komatsu Miningkomatsu.com

Development and supply of technologies, equipment, and services for construction, mining, industrial, forestry, and forklift markets worldwide.

Mining 馃嚭馃嚫 Milwaukee 5,339 2017
20
Exact Sciencesexactsciences.com

Development of cancer prevention and early detection solutions, guiding personalized treatment to help eradicate cancer and improve patient outcomes.

Biotechnology Research 馃嚭馃嚫 Madison 5,321 n/a
21
Marshfield Clinic Health Systemmarshfieldclinic.org

Providing comprehensive healthcare services, research, education, and community partnerships across rural Wisconsin and Michigan's Upper Peninsula.

Hospitals and Health Care 馃嚭馃嚫 Marshfield 5,019 1916
22
Froedtert Healthfroedtert.com

Academic medical center with multiple hospitals and clinics providing patient care, medical research, education, and trauma services across Wisconsin.

Hospitals and Health Care 馃嚭馃嚫 Milwaukee 4,892 n/a
23
Brady Corporationbradyid.com

An international manufacturer providing complete solutions for identifying and protecting people, products, and places through labels, signs, safety devices, and software

Manufacturing 馃嚭馃嚫 Milwaukee 4,291 1914
24
Generacgenerac.com

Providing reliable, efficient energy solutions for homes, businesses, and critical infrastructure to ensure comfort, safety, and energy independence.

Electric Power Generation 馃嚭馃嚫 Waukesha 4,197 1959
25
Briggs & Strattonbriggsandstratton.com

Design, manufacture, and market engines, lithium-ion batteries, generators, energy storage, and outdoor power equipment globally under multiple brand names.

Manufacturing 馃嚭馃嚫 Milwaukee 3,691 1908

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26
Modine Manufacturing Companymodine.com

This company specializes in innovative thermal technology, providing customized heating and cooling solutions for vehicle and commercial equipment manufacturers since 1916

Manufacturing 馃嚭馃嚫 Racine 3,466 1916
27
Trek Bicycletrekbikes.com

This company values individuality, welcomes all backgrounds, and is passionate about creating a diverse and inclusive environment

Sporting Goods Manufacturing 馃嚭馃嚫 Waterloo 3,384 1976
28
Marshfield Clinicmarshfieldclinic.org

A large private multispecialty group practice with 775 physicians in 80 specialties across Wisconsin and Michigan's Upper Peninsula

Hospitals and Health Care 馃嚭馃嚫 Marshfield 3,282 1916
29
Sensient Technologies Corporationsensient.com

Enhancing sensory experiences by developing specialized ingredients and technologies for colors, flavors, and extracts in industries worldwide

Food and Beverage Manufacturing 馃嚭馃嚫 Milwaukee 3,134 n/a
30
Mercury Marinemercurymarine.com

designs, manufactures, distributes marine engines, parts, and accessories for recreational, commercial, and government boating applications worldwide

Manufacturing 馃嚭馃嚫 Fond du Lac 2,887 1939
31
Rehlkorehlko.com

providing global energy resilience solutions with innovative power systems and engines, supporting industrial and residential energy needs worldwide

Manufacturing 馃嚭馃嚫 Milwaukee 2,710 n/a
32
The Manitowoc Companymanitowoc.com

Design and manufacture of crawler, boom, telescoping, and tower cranes with innovative products and strong customer support services worldwide.

Machinery Manufacturing 馃嚭馃嚫 Milwaukee 2,505 n/a
33
KIki.com

This employee-owned company manufactures innovative furniture and movable wall solutions tailored to education, healthcare, government, and corporate markets worldwide

Office Furniture and Fixtures Manufacturing 馃嚭馃嚫 Green Bay 2,314 1941
34
Enerpac Tool Groupenerpactoolgroup.com

A global industrial tools and services company specializing in high-pressure hydraulic tools, controlled force products, and heavy load positioning solutions

Industrial Machinery Manufacturing 馃嚭馃嚫 Milwaukee 2,226 1910
35
Versiti Inc.versiti.org

Blood health innovators focused on discovery, diagnosis, and treatment, conducting groundbreaking research and providing life-saving donations to communities and healthcare partners nation-wide

Hospitals and Health Care 馃嚭馃嚫 Milwaukee 2,047 n/a
36
Rogers Behavioral Healthrogersbh.org

Nationally recognized provider of specialized psychiatric care for a variety of mental health disorders in communities across the country

Mental Health Care 馃嚭馃嚫 Oconomowoc 2,025 1907
37
Promega Corporationpromega.com

Promega Corporation collaborates globally to develop innovative technologies in the life sciences, fostering creativity, sustainability, and meaningful connections with customers

Biotechnology Research 馃嚭馃嚫 Madison 1,991 1978
38
SMC Ltdsmcltd.com

Offers global contract manufacturing and molding services for medical devices, diagnostics, and pharmaceutical industries, including design, engineering, and assembly.

Medical Equipment Manufacturing 馃嚭馃嚫 Somerset 1,783 1988
39
Sub-Zero Group, Inc.subzero-wolf.com

Family-owned manufacturer producing professional-grade refrigeration, cooking, and dishwashing appliances designed for long-lasting performance, precision craftsmanship, and food preservation in high-end residential kitchens.

Manufacturing 馃嚭馃嚫 Madison 1,775 1945
40
Oshkosh Defenseoshkoshdefense.com

Design, production, and sustainment of heavy, medium, and light military vehicles plus mobility systems with global logistics and life cycle fleet support.

Defense and Space Manufacturing 馃嚭馃嚫 Oshkosh 1,610 1917
41
UW School of Medicine and Public Healthmed.wisc.edu

Advancing health equity through patient care, education, and research to promote healthy individuals and communities in Madison, WI

Higher Education 馃嚭馃嚫 Madison 1,472 1907
42
Pierce Manufacturingpiercemfg.com

Leading North American manufacturer of custom fire apparatus including pumpers, aerials, rescue trucks, wildland trucks, and tankers Part of Oshkosh Corporation Website: wwwpiercemfgcom

Motor Vehicle Manufacturing 馃嚭馃嚫 Appleton 1,422 1913
43
University of Wisconsin Hospital and Clinicsuwhealth.org

A prestigious academic medical center with 471 beds, specializing in cancer treatment, pediatrics, ophthalmology, surgical specialties, and organ transplantation

Hospitals and Health Care 馃嚭馃嚫 Madison 1,378 n/a
44
BW Convertingbwconverting.com

Design and manufacture precision machinery for tissue, hygiene, print, packaging, mailing, textiles, and other high-performance industrial applications worldwide.

Industrial Machinery Manufacturing 馃嚭馃嚫 Green Bay 1,373 2021
45
Badger Meterbadgermeter.com

Global provider of smart water solutions, encompassing flow measurement, water quality, and pressure monitoring. Offers data and analytics to optimize operations and ensure sustainable water use.

Utilities 馃嚭馃嚫 Milwaukee 1,378 n/a
46
Electronic Theatre Controlsetcconnect.com

Manufacturer of lighting and rigging technology, developing professional tools for various venues worldwide, with a strong focus on technical and customer service.

Appliances, Electrical, and Electronics Manufacturing 馃嚭馃嚫 Middleton 1,367 1975
47
Rexnordrexnord.com

A global corporation specializing in mechanical components and smart solutions for industries like automotive, food & beverage, energy, and mining Headquarters in Milwaukee, Wisconsin

Machinery Manufacturing 馃嚭馃嚫 Milwaukee 1,342 n/a
48
Greenheckgreenheck.com

Global leader in engineering and manufacturing ventilation equipment to improve indoor air quality, safety, and comfort in nonresidential buildings

Industrial Machinery Manufacturing 馃嚭馃嚫 Schofield 1,311 1947
49
Miller Electric Mfg. LLCmillerwelds.com

A company that manufactures innovative welding products for various industries, providing exceptional customer service and fostering opportunities for career growth

Machinery Manufacturing 馃嚭馃嚫 Appleton 1,301 1929
50
Nelson Globalnelsongp.com

Engineering and manufacturing air, fluid transfer, NVH, structural, acoustic, and thermal management solutions for leading global OEMs.

Industrial Machinery Manufacturing 馃嚭馃嚫 Stoughton 1,286 1939

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

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