# The 100 largest private equity-backed companies in the United States

Tamtam tracks 579 private equity-backed companies headquartered in the United States. This list ranks the 100 largest by number of employees on LinkedIn, led by Walgreens, Inspire and Purpose Brands, LLC. Their median headcount is 3,442. Half of them were founded in 1997 or later. The most common headquarters are Chicago (6), Austin (5) and Atlanta (4).

This selection of private equity-backed companies in the United States comprises mostly large firms, many founded in the last two decades. The companies operate across diverse sectors, from retail to technology and healthcare. For instance, Walgreens is a retail pharmacy chain, Inspire operates a portfolio of restaurant brands, and VXI Global Solutions provides customer service and digital solutions. Peraton focuses on innovative solutions for global challenges, while Parexel offers comprehensive clinical development services.

Several companies on this list are headquartered in the Washington D.C. metropolitan area, including Guidehouse and Peraton in McLean and Reston, respectively. Additionally, there is a notable presence of companies in the healthcare and restaurant industries, such as Sunrise Senior Living and GeBBS Healthcare Solutions, alongside Inspire and Jersey Mike's Subs. This suggests a varied economic landscape with strong representation in service-oriented sectors.

🇺🇸 United States · 100 companies · Updated Nov 15, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Walgreens](https://www.tamtam.ai/c/walgreens) (walgreens.com)<br>A leading retail pharmacy offering health and beauty products, with a focus on providing pharmacy services and a seamless omnichannel experience for customers | Retail Pharmacies | 🇺🇸 Deerfield | 90,723 | 1901 |
| 2 | [Inspire](https://www.tamtam.ai/c/inspire-atlanta) (inspirebrands.com)<br>Operates a diverse portfolio of over 33,000 restaurants worldwide including Arby's, Baskin-Robbins, Buffalo Wild Wings, Dunkin', Jimmy John's, and SONIC. | Restaurants | 🇺🇸 Atlanta | 56,164 | 2018 |
| 3 | [Purpose Brands, LLC](https://www.tamtam.ai/c/purpose-brands-llc) (sebrands.com)<br>A global franchise company focused on improving self-esteem through fitness, wellness, and beauty brands, with a strong culture of values | Wellness and Fitness Services | 🇺🇸 Woodbury | 30,273 | 2002 |
| 4 | [VXI Global Solutions](https://www.tamtam.ai/c/vxi-global-solutions) (vxi.com)<br>BPO leader offering customer service & digital solutions worldwide, with focus on omni-channel support, automation, & revenue generation for top brands | Outsourcing and Offshoring Consulting | 🇺🇸 Los Angeles | 22,830 |  |
| 5 | [Parexel](https://www.tamtam.ai/c/parexel) (parexel.com)<br>Provides comprehensive clinical development services globally, from early to late phase trials, helping new treatments reach patients faster through expertise and innovation. | Pharmaceutical Manufacturing | 🇺🇸 Raleigh | 21,982 | 1982 |
| 6 | [Tenneco](https://www.tamtam.ai/c/tenneco) (tenneco.com)<br>A global automotive products company driving advancements in mobility through technology solutions for various markets worldwide | Motor Vehicle Manufacturing | 🇺🇸 Northville | 21,507 | 1930 |
| 7 | [Peraton](https://www.tamtam.ai/c/peraton) (peraton.com)<br>A company at the forefront of solving global challenges with innovative solutions, prioritizing safety and security through fresh perspectives and talent | Technology, Information and Internet | 🇺🇸 Reston | 18,000 | 2017 |
| 8 | [Jersey Mike's Subs](https://www.tamtam.ai/c/jersey-mike-s-subs) (jerseymikes.com)<br>Serves authentic fresh sliced subs and Philly cheesesteaks on freshly baked bread, committed to community giving and philanthropic endeavors. | Restaurants | 🇺🇸 Manasquan | 16,217 | 1956 |
| 9 | [HUB International](https://www.tamtam.ai/c/hub-international) (hubinternational.com)<br>Advises businesses and individuals on insurance, risk management, employee benefits, retirement, and wealth management with tailored solutions. | Insurance | 🇺🇸 Chicago | 16,129 |  |
| 10 | [Guidehouse](https://www.tamtam.ai/c/guidehouse) (guidehouse.com)<br>Global AI-led professional services firm providing advisory, technology, and managed services to commercial and government sectors for efficiency and resilience. | Business Consulting and Services | 🇺🇸 McLean | 15,865 |  |
| 11 | [DIRECTV](https://www.tamtam.ai/c/directv) (directv.com)<br>Provides high-quality television content and personalized video services across multiple screens, utilizing emerging technologies to deliver reliable entertainment for passionate superfans everywhere. | Entertainment Providers | 🇺🇸 El Segundo | 15,343 | 1994 |
| 12 | [Belk](https://www.tamtam.ai/c/belk) (belkcareers.com)<br>A historic department store offering quality products, exceptional customer service, and community support through nationwide store locations and online platform | Retail | 🇺🇸 Charlotte | 12,997 | 1888 |
| 13 | [Sunrise Senior Living](https://www.tamtam.ai/c/sunrise-senior-living) (sunriseseniorliving.com)<br>A senior living company with over 270 communities in the US and Canada, focusing on championing quality of life for seniors Offering rewarding career opportunities | Hospitals and Health Care | 🇺🇸 McLean | 12,929 | 1981 |
| 14 | [GeBBS Healthcare Solutions](https://www.tamtam.ai/c/gebbs-healthcare-solutions) (gebbs.com)<br>A leading provider of Revenue Cycle Management services and Risk Adjustment solutions, utilizing innovative technology and a global workforce to improve financial performance for clients | Hospitals and Health Care | 🇺🇸 East Haven | 11,612 | 2005 |
| 15 | [Baker Tilly US](https://www.tamtam.ai/c/baker-tilly-us) (bakertilly.com)<br>A leading advisory CPA firm with a coast-to-coast and global presence, part of Baker Tilly International network with 43,000 professionals | Accounting | 🇺🇸 Chicago | 10,594 |  |
| 16 | [Cloud Software Group](https://www.tamtam.ai/c/cloud-software-group) (cloud.com)<br>It provides software solutions that enhance data management, automation, insights, and collaboration, helping customers to evolve and succeed. | Software Development | 🇺🇸 Fort Lauderdale | 9,515 |  |
| 17 | [Univar Solutions](https://www.tamtam.ai/c/univar-solutions) (univarsolutions.com)<br>Distributes chemicals and ingredients globally, provides value-added services, and offers expertise in market knowledge, formulation, logistics, and digital tools. | Chemical Manufacturing | 🇺🇸 Downers Grove | 9,326 | 1924 |
| 18 | [RealPage, Inc.](https://www.tamtam.ai/c/realpage-inc) (realpage.com)<br>Global provider of software and data analytics for the real estate industry, helping clients improve performance and increase returns with innovative solutions | Software Development | 🇺🇸 Richardson | 9,112 |  |
| 19 | [Tropical Smoothie Cafe](https://www.tamtam.ai/c/tropical-smoothie-cafe) (tropicalsmoothiecafe.com)<br>Serves better-for-you food and smoothies, inspiring healthier lifestyles and community well-being through a fast-casual restaurant brand across many states. | Restaurants | 🇺🇸 Atlanta | 9,087 | 1997 |
| 20 | [athenahealth](https://www.tamtam.ai/c/athenahealth) (athenahealth.com)<br>The company strives to simplify healthcare with innovative technology for electronic health records, revenue cycle management, and patient engagement solutions | IT Services and IT Consulting | 🇺🇸 Boston | 8,956 | 1997 |
| 21 | [TeamHealth](https://www.tamtam.ai/c/teamhealth) (teamhealth.com)<br>The company is a leading physician practice in the US focused on quality, safety, and empowering healthcare professionals across various specialties nationwide | Hospitals and Health Care | 🇺🇸 Knoxville | 8,870 | 1979 |
| 22 | [Veritiv](https://www.tamtam.ai/c/veritiv) (veritiv.com)<br>A provider of packaging, JanSan, hygiene, print, publishing products, logistics, and supply chain solutions serving a variety of industries globally | Transportation, Logistics, Supply Chain and Storage | 🇺🇸 Atlanta | 7,857 | 2014 |
| 23 | [R Systems](https://www.tamtam.ai/c/r-systems) (rsystems.com)<br>Global provider of product engineering, digital solutions, AI, cloud-native capabilities, automation, and strategic growth support for diverse industries. | IT Services and IT Consulting | 🇺🇸 El Dorado Hills | 6,833 | 1993 |
| 24 | [Baker Tilly](https://www.tamtam.ai/c/baker-tilly) (bit.ly)<br>Global provider of assurance, tax, and consultancy services with over 43,000 employees serving clients in 141 territories, guiding bold decisions and achieving goals | Accounting | 🇺🇸 Global | 6,700 |  |
| 25 | [Ness Digital Engineering](https://www.tamtam.ai/c/ness-digital-engineering) (ness.com)<br>Global provider of data, AI, and cloud-powered software engineering services enabling enterprises to modernize systems and accelerate product development. | Software Development | 🇺🇸 New York | 6,494 | 1999 |
| 26 | [Infogain](https://www.tamtam.ai/c/infogain) (infogain.com)<br>Infogain specializes in digital customer experience engineering, delivering solutions for Fortune 500 companies across various industries using advanced technologies. | IT Services and IT Consulting | 🇺🇸 Los Gatos | 6,161 |  |
| 27 | [Thirty-One Gifts](https://www.tamtam.ai/c/thirty-one-gifts) (mythirtyone.com)<br>A rapidly growing direct-selling company empowering women to run their own businesses as consultants, offering unique gift products to customers | Retail | 🇺🇸 Columbus | 5,912 | 2003 |
| 28 | [Dun & Bradstreet](https://www.tamtam.ai/c/dun-and-bradstreet) (dnb.com)<br>Provides global business data and analytics to help companies improve performance, manage risk, and identify growth opportunities effectively. | Information Services | 🇺🇸 Jacksonville | 5,768 |  |
| 29 | [Equiniti](https://www.tamtam.ai/c/equiniti) (equiniti.com)<br>The company engages customers with investments, connects businesses with markets, and offers services in pensions and remediation to facilitate growth | Financial Services | 🇺🇸 London | 5,747 |  |
| 30 | [PrimeFlight Aviation Services](https://www.tamtam.ai/c/primeflight-aviation-services) (primeflight.com)<br>A global aviation services company providing aircraft, passenger, and security services to ensure safety, reliability, and customer satisfaction at airports worldwide | Airlines and Aviation | 🇺🇸 Sugar Land | 5,653 |  |
| 31 | [Premier Inc.](https://www.tamtam.ai/c/premier-inc) (premierinc.com)<br>Leader in healthcare transformation, uniting thousands of providers to improve quality outcomes, reduce costs, and drive performance through data and technology solutions | Hospitals and Health Care | 🇺🇸 Charlotte | 5,226 |  |
| 32 | [Xoriant](https://www.tamtam.ai/c/xoriant) (xoriant.com)<br>Xoriant is a global digital engineering firm that turns imaginative visions into realities, accelerating business outcomes with innovative technology solutions | IT Services and IT Consulting | 🇺🇸 Sunnyvale | 5,220 | 1990 |
| 33 | [Infinx](https://www.tamtam.ai/c/infinx) (infinx.com)<br>Innovative healthcare company offering scalable prior authorization and revenue cycle management solutions, using AI-driven software and billing specialists to optimize revenue capture | Hospitals and Health Care | 🇺🇸 Cupertino | 5,195 | 2012 |
| 34 | [Arise](https://www.tamtam.ai/c/arise) (arise.com)<br>A disruptive technology platform connects brands with work-from-home Service Partners to create exceptional customer experiences and flexible capacity for volume changes | Outsourcing and Offshoring Consulting | 🇺🇸 Miami | 5,033 | 1994 |
| 35 | [Epicor Software](https://www.tamtam.ai/c/epicor-software) (epicor.com)<br>Providing tailored software solutions to manufacturing, delivery, and sales businesses, enhancing productivity, growth, and operational effectiveness. | Other | 🇺🇸 Austin | 4,802 | 1972 |
| 36 | [PCI Pharma Services](https://www.tamtam.ai/c/pci-pharma-services) (pci.com)<br>Provides world-class solutions for drug development, manufacturing, advanced drug delivery, clinical trials, and commercial packaging, delivering life-changing therapies globally. | Pharmaceutical Manufacturing | 🇺🇸 Philadelphia | 4,795 |  |
| 37 | [ProAmpac](https://www.tamtam.ai/c/proampac) (proampac.com)<br>A global leader in flexible packaging, providing creative solutions, sustainable products, and innovative collaboration to meet customer needs and sustainability goals | Packaging and Containers Manufacturing | 🇺🇸 Cincinnati | 4,519 |  |
| 38 | [Rocket Software](https://www.tamtam.ai/c/rocket-software) (rocketsoftware.com)<br>Partner for organizations transforming IT infrastructure, applications, and data from core systems to cloud with global support and innovation. | IT Services and IT Consulting | 🇺🇸 Waltham | 4,385 |  |
| 39 | [Apexon](https://www.tamtam.ai/c/apexon) (apexon.com)<br>Digital-first technology services firm specializing in accelerating business transformation through human-centric digital experiences Expertise in UX/UI, engineering, data, focusing on BFSI, healthcare, and life sciences | IT Services and IT Consulting | 🇺🇸 Santa Clara | 4,339 |  |
| 40 | [Ellucian](https://www.tamtam.ai/c/ellucian) (ellucian.com)<br>Leading provider of cloud & SaaS solutions for higher education institutions worldwide, enhancing operations and enriching the experience for millions of students | Higher Education | 🇺🇸 Reston | 4,315 | 1968 |
| 41 | [HAVI](https://www.tamtam.ai/c/havi) (havi.com)<br>A global company providing sourcing, supply chain solutions, digital analytics, marketing services, and consumer products to connect people with their favorite products worldwide | Holding Companies | 🇺🇸 Chicago | 4,160 | 1974 |
| 42 | [Restaurant365](https://www.tamtam.ai/c/restaurant365) (restaurant365.com)<br>cloud-based platform for restaurant accounting, inventory, workforce management, payroll, and integrations to optimize operations and improve guest experiences | Software Development | 🇺🇸 Irvine | 3,986 | 2011 |
| 43 | [Sharecare](https://www.tamtam.ai/c/sharecare) (sharecare.com)<br>Digital healthcare company providing AI insights, care management, benefits navigation, and health information to improve care quality and outcomes. | Wellness and Fitness Services | 🇺🇸 Atlanta | 3,846 | 2010 |
| 44 | [California Pizza Kitchen](https://www.tamtam.ai/c/california-pizza-kitchen) (cpk.com)<br>A global brand known for innovative California-style cuisine, featuring creative pizzas and a unique dining experience in over 14 countries | Restaurants | 🇺🇸 Costa Mesa | 3,841 | 1985 |
| 45 | [Cision](https://www.tamtam.ai/c/cision) (cision.com)<br>A global leader in media intelligence and communication solutions, equipping professionals with tools to excel in today's data-driven world | Public Relations and Communications Services | 🇺🇸 Chicago | 3,839 |  |
| 46 | [Trellix](https://www.tamtam.ai/c/trellix) (trellix.com)<br>Delivers intelligence-led cyber resilience for security-conscious organizations. Transforms threat intelligence into high-fidelity detections and automates AI-driven detection and response across diverse environments. | Computer and Network Security | 🇺🇸 Plano | 3,827 | 2022 |
| 47 | [Coupa](https://www.tamtam.ai/c/coupa) (coupa.com)<br>Community-driven AI platform leveraging extensive spend data to optimize business decisions, enhancing profitability and operational margins for companies. | Software Development | 🇺🇸 Foster City | 3,715 | 2006 |
| 48 | [Legence](https://www.tamtam.ai/c/legence) (wearelegence.com)<br>Integrated provider of energy efficiency and sustainability solutions for diverse industries, specializing in advisory, engineering, contracting, and maintenance services for high-performance facilities | Construction | 🇺🇸 San Jose | 3,648 |  |
| 49 | [Quest Software](https://www.tamtam.ai/c/quest-software) (quest.com)<br>Provides software solutions for data management, cybersecurity, and platform modernization, enabling organizations to build trusted foundations for AI success with speed and confidence. | Software Development | 🇺🇸 Austin | 3,567 |  |
| 50 | [Cloudera](https://www.tamtam.ai/c/cloudera) (cloudera.com)<br>Empowering individuals to unlock insights from complex data, delivering an enterprise data cloud solution for all data sources, from Edge to AI | Software Development | 🇺🇸 Santa Clara | 3,442 | 2008 |
| 51 | [Inovalon](https://www.tamtam.ai/c/inovalon) (inovalon.com)<br>Inovalon offers data-driven SaaS solutions on a cloud platform to improve clinical outcomes and economics in healthcare for various organizations | Software Development | 🇺🇸 Bowie | 3,316 |  |
| 52 | [HireRight](https://www.tamtam.ai/c/hireright) (hireright.com)<br>Global provider of background checks, drug testing, and employment verification services through an innovative platform, tailored to meet the unique needs of organizations worldwide | Human Resources Services | 🇺🇸 Nashville | 3,283 |  |
| 53 | [Excelitas Technologies Corp.](https://www.tamtam.ai/c/excelitas-technologies-corp) (excelitas.com)<br>Provider of advanced photonic technologies specializing in sensing, detection, imaging, optics, and specialty illumination for diverse global industries. | Manufacturing | 🇺🇸 Pittsburgh | 3,129 |  |
| 54 | [Cubic Corporation](https://www.tamtam.ai/c/cubic-corporation) (cubic.com)<br>The company creates technology solutions in transportation to simplify daily journeys and defense capabilities to promote mission success and safety | IT Services and IT Consulting | 🇺🇸 San Diego | 3,095 |  |
| 55 | [AssuredPartners](https://www.tamtam.ai/c/assuredpartners) (ajg.com)<br>Global insurance brokerage specializing in industry-specific solutions for businesses and consumers, offering services in commercial insurance, risk management, and employee benefits | Insurance | 🇺🇸 Rolling Meadows | 3,075 | 2011 |
| 56 | [Anaplan](https://www.tamtam.ai/c/anaplan) (anaplan.com)<br>Leading AI-driven scenario planning and analysis platform, optimizing decision-making and fostering collaboration across organizational silos for enterprises. | Software Development | 🇺🇸 Miami | 3,045 |  |
| 57 | [AIT Worldwide Logistics](https://www.tamtam.ai/c/ait-worldwide-logistics) (aitworldwide.com)<br>Global freight forwarding company offering customized supply chain solutions including sea, air, ground, rail transport, customs clearance, and warehousing. | Transportation, Logistics, Supply Chain and Storage | 🇺🇸 Itasca | 2,822 | 1979 |
| 58 | [Applied Systems](https://www.tamtam.ai/c/applied-systems) (www1.appliedsystems.com)<br>A leading provider of innovative cloud software for the insurance industry, driving transformation through digitization, automation, and new partnerships | Software Development | 🇺🇸 Chicago | 2,813 | 1983 |
| 59 | [OP360 (OfficePartners360)](https://www.tamtam.ai/c/op360-officepartners360) (op360.com)<br>Global workforce partner offering streamlined outsourcing solutions for brands, delivering omnichannel customer service, sales, technology support, and back-office services to medium and Fortune 500 companies | Outsourcing and Offshoring Consulting | 🇺🇸 Ridgefield | 2,785 | 2006 |
| 60 | [Chamberlain Group](https://www.tamtam.ai/c/chamberlain-group) (chamberlaingroup.com)<br>A global leader in intelligent access technology, providing seamless, secure access to homes and businesses through innovative products and software solutions | Software Development | 🇺🇸 Oak Brook | 2,781 | 1954 |
| 61 | [Inhabit®](https://www.tamtam.ai/c/inhabit) (inhabit.com)<br>A software company providing innovative solutions for residential and vacation property management professionals, backed by top-tier private equity partners For more information, visit website | Software Development | 🇺🇸 Knoxville | 2,755 | 2016 |
| 62 | [Metronet](https://www.tamtam.ai/c/metronet) (metronet.com)<br>A fast-growing telecommunication company offering cutting-edge fiber-optic technology for TV, voice, and internet services, focused on customer care and innovation | Telecommunications | 🇺🇸 Evansville | 2,737 | 2005 |
| 63 | [TRIMEDX](https://www.tamtam.ai/c/trimedx) (trimedx.com)<br>Industry-leading provider of clinical asset management, clinical engineering services, asset informatics, and medical device cybersecurity to healthcare providers Transformational, cost-effective solutions for patient care | Hospitals and Health Care | 🇺🇸 Indianapolis | 2,721 | 1998 |
| 64 | [FleetPride](https://www.tamtam.ai/c/fleetpride) (fleetpride.com)<br>The company is a national distributor of truck and trailer parts and services, with a network of 300+ locations and a team of 4,000+ experts | Truck Transportation | 🇺🇸 Irving | 2,608 | 1999 |
| 65 | [QTS Data Centers](https://www.tamtam.ai/c/qts-data-centers) (quantumfiber.com)<br>Provider of data center solutions with over 9 million sq ft of space in North America Offers secure infrastructure, connectivity, and premium customer service | IT Services and IT Consulting | 🇺🇸 Sterling | 2,591 | 2005 |
| 66 | [ALKEGEN](https://www.tamtam.ai/c/alkegen) (alkegen.com)<br>Specialty materials leader for mission-critical systems in battery technologies, electric vehicles, filtration media, and insulation materials to promote sustainability and energy savings | Industrial Machinery Manufacturing | 🇺🇸 Irving | 2,527 |  |
| 67 | [Imperial Dade](https://www.tamtam.ai/c/imperial-dade) (imperialdade.com)<br>The company is a leading distributor of packaging, chemicals, janitorial supplies, and equipment serving various market segments with consultative programs | Transportation, Logistics, Supply Chain and Storage | 🇺🇸 Jersey City | 2,510 | 1935 |
| 68 | [Zinnia](https://www.tamtam.ai/c/zinnia) (zinnia.com)<br>The company simplifies life and annuity processes through technology, empowering clients to innovate, launch products faster, and better serve customers | Software Development | 🇺🇸 Greenwich | 2,494 | 2005 |
| 69 | [Vantage Data Centers](https://www.tamtam.ai/c/vantage-data-centers) (vantage-dc.com)<br>Designs and operates scalable, efficient, and sustainable data centers worldwide, serving hyperscalers, cloud providers, and large enterprises. | IT Services and IT Consulting | 🇺🇸 Denver | 2,484 | 2010 |
| 70 | [Electrical Components International](https://www.tamtam.ai/c/electrical-components-international) (ecintl.com)<br>A global supplier of electrical systems and components for various industries, enabling advanced technologies to address complex challenges worldwide | Appliances, Electrical, and Electronics Manufacturing | 🇺🇸 Southfield | 2,461 | 1953 |
| 71 | [UES](https://www.tamtam.ai/c/ues) (teamues.com)<br>A nationwide provider of engineering, environmental, testing, and inspection services, specializing in sustainable infrastructure solutions for public and private clients across various industries | Engineering Services | 🇺🇸 Orlando | 2,428 | 1964 |
| 72 | [SAM](https://www.tamtam.ai/c/sam-austin) (sam.biz)<br>Complex spatial data transformation into intelligent insights using a managed geospatial services framework for infrastructure development and lifecycle asset management optimization. | Business Consulting and Services | 🇺🇸 Austin | 2,353 | 1994 |
| 73 | [Employbridge](https://www.tamtam.ai/c/employbridge) (employbridge.com)<br>Leading industrial staffing firm leveraging digital platforms to connect over 440,000 associates annually with 17,000 customers in manufacturing, logistics, transportation, and energy sectors | Staffing and Recruiting | 🇺🇸 Atlanta | 2,352 | 1997 |
| 74 | [CSI](https://www.tamtam.ai/c/csi) (csiweb.com)<br>Provides community banks with digital banking, loan origination, compliance, security, IT performance, and communication solutions to enhance customer experience and growth. | Software Development | 🇺🇸 Paducah | 2,344 | 1965 |
| 75 | [Sikich](https://www.tamtam.ai/c/sikich) (sikich.com)<br>A global professional services company specializing in technology solutions, delivering transformative digital strategies and financial services to various clients worldwide | Business Consulting and Services | 🇺🇸 Chicago | 2,335 | 1982 |
| 76 | [TIBCO](https://www.tamtam.ai/c/tibco) (tibco.com)<br>Industrial-strength software solutions delivering high performance, reliability, and scalability through technology deployment options to address mission-critical business challenges and real-time data needs. | Software Development | 🇺🇸 Santa Clara | 2,334 |  |
| 77 | [Congruex](https://www.tamtam.ai/c/congruex) (congruex.com)<br>A leading provider of end-to-end network design and build services, enabling modern world operations and facilitating connectivity across various sectors | Telecommunications | 🇺🇸 Boulder | 2,291 | 2017 |
| 78 | [insightsoftware](https://www.tamtam.ai/c/insightsoftware) (insightsoftware.com)<br>Global provider of reporting, analytics, and performance management solutions empowering finance teams with insights to make informed decisions and drive financial intelligence | Software Development | 🇺🇸 Raleigh | 2,267 |  |
| 79 | [CLEAResult](https://www.tamtam.ai/c/clearesult) (clearesult.com)<br>Leading provider of energy efficiency and sustainability solutions in North America, focused on transitioning to a carbon-neutral future through local partnerships and innovative technology | Utilities | 🇺🇸 Austin | 2,266 | 2003 |
| 80 | [Barracuda](https://www.tamtam.ai/c/barracuda) (barracuda.com)<br>Provides comprehensive cybersecurity protection for businesses of all sizes. Offers AI-powered platform securing email, data, applications, and networks with managed XDR and centralized management. | Computer and Network Security | 🇺🇸 Campbell | 2,263 |  |
| 81 | [American Campus Communities](https://www.tamtam.ai/c/american-campus-communities) (americancampus.com)<br>Development, ownership, and management of high-quality student housing communities across numerous university campuses nationwide, fostering student growth and success. | Real Estate | 🇺🇸 Austin | 2,263 | 1993 |
| 82 | [Curium Pharma](https://www.tamtam.ai/c/curium-pharma) (curiumpharma.com)<br>Global leader in nuclear medicine, providing life-changing diagnostics and treatment for cancer patients worldwide through innovative radiopharmaceutical products and AI-driven solutions | Pharmaceutical Manufacturing | 🇺🇸 Boston | 2,236 | 2017 |
| 83 | [Squarespace](https://www.tamtam.ai/c/squarespace) (squarespace.com)<br>A design-driven platform empowering entrepreneurs worldwide to build online brands and businesses through websites, domains, ecommerce, and marketing tools | Software Development | 🇺🇸 New York | 2,206 | 2003 |
| 84 | [Trinity Consultants](https://www.tamtam.ai/c/trinity-consultants) (trinityconsultants.com)<br>A global EH&S firm offering services in regulatory compliance, ecology, water, built environments, and life sciences since 1974 | Environmental Services | 🇺🇸 Dallas | 2,195 | 1974 |
| 85 | [Hargreaves Lansdown](https://www.tamtam.ai/c/hargreaves-lansdown) (hl.co.uk)<br>Providing a platform for private investors to manage ISAs, pensions, SIPPs, and savings efficiently with tax and cost benefits. | Financial Services | 🇺🇸 Bristol | 2,192 | 1981 |
| 86 | [Bob Evans Restaurants, LLC](https://www.tamtam.ai/c/bob-evans-restaurants-llc) (bobevans.com)<br>Family-style restaurant chain with nearly 500 locations across 18 states, offering high-quality food and hospitality based on farm values | Restaurants | 🇺🇸 New Albany | 2,151 | 1953 |
| 87 | [Pavion](https://www.tamtam.ai/c/pavion) (pavion.com)<br>A company providing fire, security, and integration solutions across multiple industries with a focus on safety, security, and communication | Security Systems Services | 🇺🇸 Chantilly | 2,143 |  |
| 88 | [francesca’s®](https://www.tamtam.ai/c/francesca-s) (francescas.com)<br>Offers unique, free-spirited fashion, jewelry, and lifestyle products, inspiring discovery and celebrating individuality through numerous boutiques and e-commerce sites. | Retail | 🇺🇸 Houston | 2,068 | 1999 |
| 89 | [Perforce Software](https://www.tamtam.ai/c/perforce-software) (perforce.com)<br>Leader in digital product development, providing innovative solutions for faster and higher quality output through the power of Perforce technology | Software Development | 🇺🇸 Minneapolis | 2,028 | 1995 |
| 90 | [Russell Investments](https://www.tamtam.ai/c/russell-investments) (bit.ly)<br>Providing diverse investment capabilities and solutions to institutional, financial intermediaries, and individual investors worldwide, enhancing financial security. | Financial Services | 🇺🇸 Seattle | 2,004 | 1936 |
| 91 | [Moss Adams](https://www.tamtam.ai/c/moss-adams) (bakertilly.com)<br>Provides accounting, tax, and advisory services with extensive industry insights and holistic solutions for middle market businesses nationwide. | Accounting | 🇺🇸 Seattle | 2,001 | 1913 |
| 92 | [Alliance Ground International](https://www.tamtam.ai/c/alliance-ground-international) (agi.aero)<br>A leading cargo ground handling company in the US, offering cost-effective solutions with safe and efficient cargo, ramp, and mail handling services | Airlines and Aviation | 🇺🇸 Miami | 1,976 | 1987 |
| 93 | [American Residential Services](https://www.tamtam.ai/c/american-residential-services) (ars.com)<br>Heating, air conditioning, plumbing, drain cleaning, and sewer line services for residential and light commercial customers across the United States. | Consumer Services | 🇺🇸 Memphis | 1,948 | 1975 |
| 94 | [EthosEnergy](https://www.tamtam.ai/c/ethosenergy) (ethosenergy.com)<br>Global services and tailored solutions for rotating equipment across power, oil, gas, industrial, and aerospace markets to ensure affordable and sustainable energy. | Utilities | 🇺🇸 Houston | 1,939 | 2014 |
| 95 | [SMX](https://www.tamtam.ai/c/smx) (smxtech.com)<br>A US based IT and engineering solutions provider specializing in Cloud Solutions, Cyber Security, Systems Integration, Data Analytics, and Mission-Focused Engineering | IT Services and IT Consulting | 🇺🇸 Hollywood | 1,934 | 1995 |
| 96 | [Integrity](https://www.tamtam.ai/c/integrity) (integrity.com)<br>The company is a top distributor of life and health insurance, offering innovative solutions for wealth management and retirement planning | Insurance | 🇺🇸 Dallas | 1,928 | 2006 |
| 97 | [Bridgenext](https://www.tamtam.ai/c/bridgenext) (bridgenext.com)<br>A global digital consultancy specializing in creating innovative digital products, experiences, and solutions, while also providing services in automation, data engineering, and brand elevation | IT Services and IT Consulting | 🇺🇸 Jacksonville | 1,919 |  |
| 98 | [AUTOKINITON](https://www.tamtam.ai/c/autokiniton) (autokiniton.com)<br>Autokiniton invests in Tier 1 automotive suppliers, offering innovative solutions in metal stampings, welded assemblies, and tubular products for the automotive industry | Motor Vehicle Manufacturing | 🇺🇸 New Boston | 1,912 | 2018 |
| 99 | [Duck Creek Technologies](https://www.tamtam.ai/c/duck-creek-technologies) (duckcreek.com)<br>Provides cloud-based software solutions for property, casualty, and general insurance industries enabling agile, intelligent, and transparent insurance operations. | Software Development | 🇺🇸 Boston | 1,904 | 2000 |
| 100 | [Veoneer](https://www.tamtam.ai/c/veoneer) (veoneer.com)<br>A global leader in automotive electronic safety systems, providing best-in-class restraint control systems to car manufacturers worldwide, with a 70-year safety development heritage | Motor Vehicle Manufacturing | 🇺🇸 Southfield | 1,888 | 2018 |

## 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 15, 2026.

## More company lists in the United States

- [The largest companies in the United States](https://www.tamtam.ai/l/largest-companies-united-states) (104,982)
- [Multinational companies in the United States](https://www.tamtam.ai/l/multinational-companies-united-states) (16,192)
- [Manufacturers in the United States](https://www.tamtam.ai/l/manufacturers-united-states) (8,677)
- [Professional services firms in the United States](https://www.tamtam.ai/l/professional-services-firms-united-states) (7,080)
- [Retail chains in the United States](https://www.tamtam.ai/l/retail-chains-united-states) (6,981)
- [Financial services firms in the United States](https://www.tamtam.ai/l/financial-services-firms-united-states) (6,868)
- [Companies with in-house R&D in the United States](https://www.tamtam.ai/l/r-and-d-companies-united-states) (6,794)
- [IT Services and IT Consulting companies in the United States](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-united-states) (6,696)
- [SaaS companies in the United States](https://www.tamtam.ai/l/saas-companies-united-states) (6,410)
- [IT services companies in the United States](https://www.tamtam.ai/l/it-services-companies-united-states) (5,818)
- [Healthcare providers in the United States](https://www.tamtam.ai/l/healthcare-providers-united-states) (5,810)
- [Critical infrastructure operators in the United States](https://www.tamtam.ai/l/critical-infrastructure-operators-united-states) (5,801)
- [Hospitals and Health Care companies in the United States](https://www.tamtam.ai/l/hospitals-and-health-care-companies-united-states) (5,573)
- [Hardware manufacturers in the United States](https://www.tamtam.ai/l/hardware-companies-united-states) (5,344)
- [Software Development companies in the United States](https://www.tamtam.ai/l/software-development-companies-united-states) (5,309)
- [Financial Services companies in the United States](https://www.tamtam.ai/l/financial-services-companies-united-states) (5,015)
- [Companies with a mobile app in the United States](https://www.tamtam.ai/l/companies-with-mobile-app-united-states) (4,663)
- [Consulting firms in the United States](https://www.tamtam.ai/l/consulting-firms-united-states) (4,383)
- [AI companies in the United States](https://www.tamtam.ai/l/ai-companies-united-states) (4,246)
- [Public sector organisations in the United States](https://www.tamtam.ai/l/public-sector-organisations-united-states) (4,153)
- [Subscription businesses in the United States](https://www.tamtam.ai/l/subscription-businesses-united-states) (3,923)
- [Real Estate companies in the United States](https://www.tamtam.ai/l/real-estate-companies-united-states) (3,808)
- [Higher Education companies in the United States](https://www.tamtam.ai/l/higher-education-companies-united-states) (3,470)
- [Construction companies in the United States](https://www.tamtam.ai/l/construction-companies-united-states) (3,271)

## The same list elsewhere in United States

- [Private equity-backed companies in Texas](https://www.tamtam.ai/l/private-equity-backed-companies-texas) (75)
- [Private equity-backed companies in California](https://www.tamtam.ai/l/private-equity-backed-companies-california) (72)
- [Private equity-backed companies in New York State](https://www.tamtam.ai/l/private-equity-backed-companies-new-york-state) (45)
- [Private equity-backed companies in Florida](https://www.tamtam.ai/l/private-equity-backed-companies-florida) (44)
- [Private equity-backed companies in Illinois](https://www.tamtam.ai/l/private-equity-backed-companies-illinois) (33)
- [Private equity-backed companies in Massachusetts](https://www.tamtam.ai/l/private-equity-backed-companies-massachusetts) (29)
- [Private equity-backed companies in North Carolina](https://www.tamtam.ai/l/private-equity-backed-companies-north-carolina) (25)
- [Private equity-backed companies in New York](https://www.tamtam.ai/l/private-equity-backed-companies-new-york) (39)

## The same list elsewhere

- [Private equity-backed companies in the world](https://www.tamtam.ai/l/private-equity-backed-companies-in-the-world) (1,497)

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Source: https://www.tamtam.ai/l/private-equity-backed-companies-united-states