| # | Company | Employees |
|---|---|---|
| 1 | 30,900 | |
| 2 |
Gilead Sciencesgilead.com
A company focused on delivering innovative medicines in virology and oncology, addressing health inequities, and empowering people to live healthier lives |
14,891 |
| 3 | 4,712 | |
| 4 | 3,715 | |
| 5 |
Qualysqualys.com
Provides disruptive cloud-based security, compliance and IT solutions, streamlining and automating security and compliance onto a single platform for organizations worldwide. |
3,647 |
| 6 |
Tipaltitipalti.com
Mid-market platform automating accounts payable, global payouts, procurement, and expenses across two hundred countries for secure supplier payments in over one hundred currencies. |
1,119 |
| 7 |
QuinStreetquinstreet.com
This company powers decentralized online marketplaces, matching searchers with brands using segmentation, AI-driven matching technology, and performance marketing strategies for great results |
1,034 |
| 8 |
BrightEdgebrightedge.com
This SEO solution provides real-time research, recommendations, and rankings for brands looking to optimize content and measure results online |
614 |
| 9 |
Replitreplit.com
The company enables remote collaboration to develop software efficiently across different devices without the need for setup |
595 |
| 10 |
MidPen Housing Corporationmidpen-housing.org
Developing and managing affordable housing for low-income families, seniors, and individuals with special needs, offering onsite programs for resident advancement |
577 |
| 11 |
Convivaconviva.ai
The company provides a real-time operational data platform for monitoring and optimizing user experience across applications, networks, devices, and more |
572 |
| 12 |
Mirum Pharmaceuticals, Inc.mirumpharma.com
Development and commercialization of medications for rare liver and genetic diseases, focusing on innovative treatments for cholestatic pruritus and neurocognitive disorders. |
459 |
| 13 |
Legacy Partnerslegacypartners.com
A privately held real estate firm specializing in owning, developing, and managing multifamily communities with a focus on integrity, professionalism, and innovation |
458 |
| 14 |
Cybersourcecybersource.com
Cybersource provides innovative commerce solutions that enhance customer experiences and drive global growth |
415 |
| 15 |
Geron Corporationgeron.com
Innovative biotech company focused on developing potential life-changing treatments for blood cancers through pioneering research and clinical trials |
379 |
| 16 |
Incortaincorta.com
First open data delivery platform, enabling real-time analysis of live, detailed data across all systems of record without complex ETL processes for faster insights. |
348 |
| 17 |
Obayashi Corporation (North American Regional Headquarters)obayashi-na.com
A global infrastructure solutions provider with over 125 years of experience in construction, real estate, urban planning, and environmental services |
338 |
| 18 |
AltexSoftaltexsoft.com
Technology & Solution Consulting company specializing in engineering, software development, data science, UX/UI design, and technology consulting across various industries with expert Eastern European engineers |
291 |
| 19 |
Sling Mediaslingbox.com
A consumer electronics company founded in 2004, specializing in innovative products that enhance the digital media consumer experience globally |
199 |
| 20 |
Visa Acceptance Solutionsvisaacceptance.com
Powering a connected ecosystem for global technology and payments leaders, providing secure open payments platform solutions. |
184 |
| 21 |
City of Foster Cityfostercity.org
A full-service city on the San Francisco Peninsula, providing various services and amenities to residents and businesses, while promoting sustainability and quality of life |
183 |
| 22 |
PointCross Life Sciencespointcrosslifesciences.com
Software company providing big data analytics, management, and visualization solutions for the life science industry, supporting R&D, regulatory data, and drug safety development |
178 |
| 23 | 158 | |
| 24 |
Bailard, Inc.bailard.com
Independent asset management firm in San Francisco Bay Area with expertise in equities, fixed income, and real estate, aligning financial goals with values for clients |
96 |
| 25 |
Scale Venture Partnersscalevp.com
Venture capital firm investing in next-generation AI-enabled enterprise software companies, supporting founders from early growth to market expansion. |
93 |
| 26 |
Siperian, Inc.informatica.com
Leading provider of master data management software platform to unify fragmented customer, product, and organizational data for improved business processes and outcomes |
28 |
| 27 |
Nipun Capital, L.P.nipuncapital.com
Asia and Emerging Markets focused asset management firm offering institutional caliber equity investment strategies with a focus on alpha extraction and disciplined risk management |
23 |
| 28 |
Gazillion Entertainmentgazillion.com
The company develops, publishes, and operates diverse games on multiple platforms, focusing on world-class brands, original franchises, and superior gameplay |
18 |
| 29 |
Lufkin Advisorslufkinadvisors.com
Private alternative asset management firm with expertise in various assets and investment strategies, providing personalized solutions for clients |
4 |
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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 Oct 24, 2026.
The same list elsewhere in United States
- The largest companies in the United States 91,669
- The largest companies in California 12,813
- The largest companies in New York State 10,485
- The largest companies in Texas 8,086
- The largest companies in Florida 4,945
- The largest companies in Illinois 4,175
- The largest companies in Pennsylvania 3,110
- The largest companies in Massachusetts 3,093
- The largest companies in Georgia 2,632
- The largest companies in Ohio 2,618
- The largest companies in New Jersey 2,569
- The largest companies in Virginia 2,503
- The largest companies in Michigan 2,346
- The largest companies in North Carolina 2,174
- The largest companies in Alabama 1,806
- The largest companies in Washington State 1,785
- The largest companies in Colorado 1,774
- The largest companies in Minnesota 1,700
- The largest companies in Maryland 1,527
- The largest companies in Wisconsin 1,482
- The largest companies in New York 6,920
- The largest companies in San Francisco 2,030
- The largest companies in Houston 1,791
- The largest companies in Chicago 1,668