| # | Company | Employees |
|---|---|---|
| 1 |
Aspen Technologyaspentech.com
Global software leader enabling industries to meet demand sustainably by optimizing asset design, operation, and maintenance lifecycle for improved operational excellence |
4,065 |
| 2 |
Urban Air Adventure Parksurbanair.com
Indoor theme park franchise with unique attractions for all ages, offering innovative technology and support for local business owners |
3,785 |
| 3 |
Sylvan Learningsylvanlearning.com
A leading provider of Personalized Learning for K-12 students, offering tutoring, STEM courses, college prep, and franchise opportunities Nationwide Founded in 1979 |
3,340 |
| 4 |
Novanta Inc.novanta.com
Supplier of advanced technology solutions in precision medicine, manufacturing, robotics, and surgery, enabling high-performance, tailored equipment for OEMs. |
2,189 |
| 5 |
Werfen North Americawerfen.com
Worldwide leader specialized diagnostics: hemostasis, acute care, transfusion, autoimmunity, transplant. Operates in over 100 territories, with headquarters in Barcelona, Spain, and technology centers in the US and Europe. |
1,933 |
| 6 |
LogixHealthlogixhealth.com
Provides coding, billing, and revenue cycle solutions for emergency departments, hospitals, and physician practices, utilizing business intelligence analytics across many states. |
1,925 |
| 7 |
Hurst-Euless-Bedford I.S.D.hebisd.edu
Provider of world-class education to 23,300 students through unique programs like Pre-K, IB, STEM, and Career & Technical Education Employs 2,686 staff |
1,605 |
| 8 |
Lantheuslantheus.com
A company with over 65 years of experience in delivering science-based solutions for improved patient outcomes through diagnostics, radiotherapeutics, and AI |
1,301 |
| 9 |
Middlesex Community Collegemass.edu
A public community college with campuses in Lowell and Bedford, Massachusetts, founded in 1970 and offering programs in performing arts |
1,257 |
| 10 |
MRCCmrccgroup.com
A constantly evolving IT services company offering expertise in IT staffing, talent transformation, eLearning, application development, QA, EDM, and Oracle solutions to empower businesses |
1,190 |
| 11 |
The Little Gym Internationalthelittlegym.com
Global franchise offering experiential learning and physical development programs for children, including gymnastics, dance, camps, and birthday parties, in over 30 countries |
1,179 |
| 12 |
iRobotirobot.com
A global consumer robot company that designs and builds intelligent home innovations, including robotic vacuums, to make life easier and homes healthier |
982 |
| 13 |
Carter BloodCarecarterbloodcare.org
An independent, nonprofit blood center in Texas provides transfusion resources to over 200 medical facilities, delivering 440,000 blood products annually |
770 |
| 14 |
Bedford County Public Schoolsbedford.sharpschool.net
Provides educational services to over 9,000 students in Kindergarten through Grade 12, including high schools, middle schools, elementary schools, and specialized programs |
766 |
| 15 |
Better Homes and Gardens Real Estate The Masiello Groupmasiello.com
A leader in all areas of buying and selling real estate in Northern New England, with a focus on bringing ease and value to clients' experiences |
742 |
| 16 |
Coca-Cola Beverages Northeastcokenortheast.com
A leading bottling company in the Northeast delivering a variety of Coca-Cola beverages while creating moments of optimism in communities |
695 |
| 17 |
FORMULATRIXformulatrix.com
Supplies innovative software and robotic automation solutions to the life science industry, simplifying scientific workflows for sample preparation and analysis. |
478 |
| 18 |
Dave's Supermarketsdavesmarkets.com
A neighborhood supermarket chain offering exceptional freshness, services, selection, and value with a diverse range of products to cater to the local community's needs |
473 |
| 19 |
State National Companies (SNC)statenational.com
A leading specialty provider of property and casualty insurance services, offering portfolio protection solutions for loans and access to the US insurance market |
467 |
| 20 | 460 | |
| 21 |
Winking Lizard Tavernwinkinglizard.com
Established in 1983, this company offers great food, a vibrant atmosphere, a wide selection of beers, and operates 21 restaurants in Ohio |
456 |
| 22 |
Coca-Cola Bottling Company of Northern New England (CCNNE)cokenortheast.com
Beverage company operating in the Northeast region, bottling and selling products from major brands like Coca-Cola, Dr Pepper, and Monster Energy |
402 |
| 23 |
Open Systems Internationalaspentech.com
The company specializes in optimizing transmission and distribution systems for utility companies in the power industry amid the global electrification imperative |
375 |
| 24 |
Berkshire Greyberkshiregrey.com
Revolutionizing business through AI and Robotics, Berkshire Grey automates omni-channel fulfillment for retailers, eCommerce, and logistics, advancing pick, pack, and sort operations |
373 |
| 25 |
Planet Technologyplanet-technology.com
Global staffing firm specializing in sourcing top talent for Core Technology, Enterprise Systems, and Cybersecurity roles worldwide Expertise in matching client needs with skilled candidates |
355 |
| 26 |
Ocular Therapeutix, Inc.ocutx.com
A biopharmaceutical company developing innovative therapies for eye diseases using bioresorbable hydrogel-based technology, with a focus on drug delivery solutions |
346 |
| 27 |
Bedford High Schoolsites.google.com
A public high school in Bedford, New Hampshire offering grades 9-12 with PSP and Honors courses, AP and IB classes, Advisory, Intercession, and Senior Project |
345 |
| 28 |
ConResconres.com
A private Women-Owned IT solutions provider offers expertise in cloud, data center, cybersecurity, collaboration, and digital infrastructure to help organizations optimize their IT systems |
326 |
| 29 |
Health Dialogcarenethealthcare.com
Providing integrated population health services including member engagement, health coaching, medication support, and decision-making tools for healthcare organizations. |
325 |
| 30 |
North Lawrence Community Schoolscareercenter.northlawrencecommunityschools.org
Providing a challenging educational environment for students to reach their potential, offering varied opportunities for academic, creative, social, and physical development |
311 |
| 31 |
AspenTech Subsurface Science & Engineeringaspentech.com
Providing geoscience and modeling solutions for subsurface engineering and operations to optimize decision-making, minimize risk, and support responsible asset management |
285 |
| 32 |
Planet Professionaltheplanetgroup.com
A staffing company specializing in technology, software, enterprise solutions, creative & digital, finance, HR, and administrative professionals across various industries |
205 |
| 33 |
Maxima Consultingmaximaconsulting.com
IT solutions provider specializing in cybersecurity, infrastructure, digital transformation, and quality assurance Trusted global advisors delivering future-proof technology to various industries |
184 |
| 34 |
Unleashed Brandsunleashedbrands.com
Franchise growth accelerator supporting brands focused on child and adolescent development in learning, playing, and growing through various activities and programs |
181 |
| 35 |
Normandeau Associates, Inc.normandeau.com
A science-based environmental consulting firm providing innovative solutions to private and public sectors nationwide, focused on sustainable development and natural resource protection |
180 |
| 36 |
Ozemioozemio.com
Holistic talent transformation solutions tailored to specific business requirements, driving exponential growth and performance through uniquely designed pedagogy |
178 |
| 37 |
Altosaltosagency.com
The company creates data-driven digital marketing campaigns to build websites that keep brands relevant on all devices |
174 |
| 38 |
Sanborn, Head & Associates, Inc.sanbornhead.com
An engineering and technical consulting firm offering innovative solutions in development, energy, industrial, and solid waste markets to private and public clients |
173 |
| 39 |
Safran Defense & Space, Inc. Optronicssafran-dsi.com
Global leader designing and producing high-performance electro-optics and navigation systems for defense and civil applications, including laser rangefinders, targeting solutions, and custom OEM solutions |
173 |
| 40 |
Boston MedFlightbostonmedflight.org
A CAMTS accredited Critical Care Transport service providing high-quality regional transport for emergent patients, funded through third-party reimbursement and fundraising efforts |
173 |
| 41 |
Premier Property Management TX
National property management company specializing in conventional and off-campus student housing, dedicated to providing exceptional experiences through interactive proprietary services |
172 |
| 42 |
Medica Corporationmedicacorp.com
Manufacturer of diagnostic blood testing analyzers focusing on enhancing productivity and quality of care in small to medium-size laboratories worldwide |
163 |
| 43 |
Insight Consultantsinsightconsultants.co
An IT company in Dallas-Fort Worth providing transformative solutions, specializing in BI, customized Microsoft/LAMP solutions, and finance/accounting services with ethical delivery |
163 |
| 44 |
Texas Dairy Queendqtexas.com
Popular Texas-based restaurant chain known for serving unique and delicious menu items like the Dude Chick'n Fried Steak Sandwich and BeltBuster burgers |
161 |
| 45 |
Rockland Manufacturingrocklandmfg.com
The company designs and manufactures heavy construction equipment such as dozers, loaders, excavators, and motor graders tailored for specific applications to enhance productivity |
155 |
| 46 |
Lexington Medical, Inclexington-med.com
Focused on creating top-tier surgical staplers, developing advanced engineering and smart manufacturing in-house to deliver disruptive innovation in medical devices. |
155 |
| 47 |
Acme Packetoracle.com
Leader in session delivery network solutions, providing secure and reliable delivery of voice, video, data, and unified communications services worldwide |
140 |
| 48 |
The Dartmouth Groupthedartmouthgroup.com
A residential asset management company with over 30 years of experience managing properties ranging from 10 to 800 units in Massachusetts, Cape Cod, New Hampshire, and Rhode Island |
113 |
| 49 |
Celera Motion, A Novanta Companyceleramotion.com
The company specializes in solving engineering challenges with precision motion systems and components for technology-driven OEMs worldwide, enhancing lives through innovation |
93 |
| 50 |
Girl Scouts of the Green and White Mountainsgirlscoutsgwm.org
This organization empowers girls to be themselves, develop skills, and make a positive impact on their communities with support from mentors and volunteers |
86 |
| 51 |
Northeast Planning Associatesnortheastplanning.com
Dedicated to providing meaningful financial strategies to individuals, families, and business owners. Access to a full range of financial services and products for over 50 years. |
83 |
| 52 |
LinQ Transportlinqtransport.com
A transportation service provider offering shipping solutions through various modes including full-truckload, refrigerated, specialized, bulk, and less-than-truckload |
75 |
| 53 |
Haigh-Farr, Inc.haigh-farr.com
Designs, develops, manufactures, and tests conformal antennas for defense, aerospace, and commercial industries, serving high-performance aerospace vehicles and military airborne applications. |
72 |
| 54 |
RedBlack Softwareredblacksoftware.com
Leading provider of portfolio rebalancing and trading solutions for asset management firms, wealth managers, RIAs, brokers, banks, and trust companies, simplifying complex processes and improving portfolio performance |
50 |
| 55 |
Frank Webb Homefrankwebb.com
Specializing in bath design, kitchen fixtures, and lighting solutions, we offer a wide selection of trusted brands for homeowners and design professionals |
36 |
| 56 |
SVN The Masiello Groupsvnmasiellogroup.com
The company offers a comprehensive range of commercial real estate services including brokerage, development, consulting, and investment analysis |
22 |
| 57 |
SetAway, LLC Retirement Plan Design, Administration & Consultingsetawayllc.com
Simplified retirement plan solutions with experienced team offering design, administration, consulting, and third-party services for businesses of all sizes |
20 |
| 58 |
Lucky Penny Cyclesluckypennycycles.com
Specializing in selling quality used motorcycles with financing options, nationwide shipping, and trade-ins Factory-trained technicians inspect all bikes Contact for international shipping |
16 |
| 59 |
Tributary Systems, Inc.tributary.com
A global leader in backup storage, virtualization, and data encryption solutions for high availability environments on various computing platforms |
14 |
| 60 |
Elston-Nationwide Carrierselston.tcitransportation.com
A full-service, third-party logistics company offering refrigerated solutions, warehouse services, freight brokerage, and load financing for carriers and owner/operators |
13 |
| 61 |
Laser Components USA, Inc.lasercomponents.com
A trusted sales organization providing cutting-edge photonic components to various markets, focusing on innovation, customization, and quality products |
12 |
| 62 |
BaldwinClarkebaldwinclarke.com
A company offering wealth management, investment banking, and insurance planning services to individuals, families, businesses, nonprofits, and endowments |
11 |
| 63 |
Standard Power of Americastandardpower.com
The company prioritizes client needs in the energy supply market, advocating for their interests and providing customized and efficient solutions through a consultative approach |
7 |
| 64 |
Alliance Power Services (APS)alliancepowerservices.com
A premier data center maintenance company based in Dallas, TX, offering UPS and battery services, ensuring peak performance and reliability |
7 |
| 65 |
Smr Services Llc
A machinery company based in Bedford, Texas, specializing in providing services related to machinery and equipment |
7 |
| 66 |
Jaxon Digitaljaxondigital.com
Specializing in unlocking digital potential through the use of Optimizely, this company helps businesses maximize their online performance and results |
6 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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