# Corporate groups and holding companies headquartered in Ohio

Tamtam tracks 104 corporate groups and holding companies headquartered in Ohio. This list ranks the 50 largest by number of employees on LinkedIn, led by Progressive Insurance, Huntington National Bank and Cleveland-Cliffs. Their median headcount is 1,572. Half of them were founded in 1950 or later. The most common headquarters are Cincinnati (13), Columbus (8) and Cleveland (5).

The companies listed in Ohio are primarily large corporate groups, with a strong presence in financial services, insurance, and manufacturing. Notable examples include Progressive Insurance, providing diverse insurance products, and Huntington National Bank, a regional financial services holding company. Cleveland-Cliffs is a North American steel producer, while The J.M. Smucker Co. offers coffee, spreads, and pet food brands. Emerson Network Power specializes in critical infrastructure technologies, and The E.W. Scripps Company is a diversified media company.

Many of these companies have long histories, with several founded in the late 19th or early 20th century, such as Huntington National Bank (1866) and The J.M. Smucker Co. (1897). A significant cluster of headquarters is observed in major cities like Columbus, Cincinnati, and Cleveland, indicating these urban centers as key hubs for corporate operations in the state.

🇺🇸 Ohio · 50 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Progressive Insurance](https://www.tamtam.ai/c/progressive-insurance) (progressive.com)<br>Offering diverse insurance products including auto, home, renters, and commercial policies with a supportive, inclusive workplace culture. | Insurance | 🇺🇸 Mayfield Village | 37,372 | 1937 |
| 2 | [Huntington National Bank](https://www.tamtam.ai/c/huntington-national-bank) (huntington.com)<br>Regional financial services holding company offering banking, payments, wealth management, and risk products for individuals, businesses, and municipalities through numerous branches and community initiatives. | Banking | 🇺🇸 Columbus | 20,037 | 1866 |
| 3 | [Cleveland-Cliffs](https://www.tamtam.ai/c/cleveland-cliffs) (clevelandcliffs.com)<br>Leading North American steel producer with vertical integration from raw materials to steel production, serving automotive and other industries with flat-rolled steel products | Manufacturing | 🇺🇸 Cleveland | 7,867 | 1847 |
| 4 | [Emerson Network Power](https://www.tamtam.ai/c/emerson-network-power) (vertiv.com)<br>Global leader in critical infrastructure technologies & services for ICT systems Offers hardware & software solutions for power, thermal, & infrastructure management to create efficient networks | Appliances, Electrical, and Electronics Manufacturing | 🇺🇸 Columbus | 6,993 |  |
| 5 | [The J.M. Smucker Co.](https://www.tamtam.ai/c/the-j-m-smucker-co) (jmsmucker.com)<br>Leading North American company offering trusted coffee, spreads, baked goods, and pet food brands for consumers and their families. | Manufacturing | 🇺🇸 Orrville | 5,473 | 1897 |
| 6 | [The E.W. Scripps Company](https://www.tamtam.ai/c/the-e-w-scripps-company) (scripps.com)<br>Diversified media company operating local TV stations, national news outlets, and entertainment brands, delivering quality journalism and popular programming nationwide. | Media Production | 🇺🇸 Cincinnati | 5,436 |  |
| 7 | [Western & Southern Financial Group](https://www.tamtam.ai/c/western-and-southern-financial-group) (westernsouthern.com)<br>Group of companies providing life insurance, investment advisory, brokerage services, and real estate management across multiple sectors. | Financial Services | 🇺🇸 Cincinnati | 5,199 | 1888 |
| 8 | [Great American Insurance Group](https://www.tamtam.ai/c/great-american-insurance-group) (greatamericaninsurancegroup.com)<br>An established insurance group offering specialized solutions for niche markets with strong financial stability and a history of excellence Company based in Cincinnati, Ohio | Insurance | 🇺🇸 Cincinnati | 4,934 |  |
| 9 | [The Cincinnati Insurance Companies](https://www.tamtam.ai/c/the-cincinnati-insurance-companies) (cinfin.com)<br>Property casualty insurance group offering business, home, auto, life, and disability insurance through independent agencies across 46 states. | Insurance | 🇺🇸 Fairfield | 4,931 | 1950 |
| 10 | [Bread Financial](https://www.tamtam.ai/c/bread-financial) (breadfinancial.com)<br>Personalized payment, lending, and saving solutions empowering millions of U.S. consumers and supporting growth for recognized retail brands. | Financial Services | 🇺🇸 Columbus | 4,584 | 1996 |
| 11 | [Roto-Rooter Plumbing and Drain Service](https://www.tamtam.ai/c/roto-rooter-plumbing-and-drain-service) (rotorooter.com)<br>North America's largest provider of plumbing repair and drain cleaning services with over 520 locations in the US, Canada, and internationally | Facilities Services | 🇺🇸 Cincinnati | 4,420 | 1935 |
| 12 | [Nationwide Financial](https://www.tamtam.ai/c/nationwide-financial) (nationwide.com)<br>A leading Fortune 100 insurance and financial services organization offering life insurance, retirement plans, annuities, and mutual funds through tailored solutions for clients | Financial Services | 🇺🇸 Columbus | 3,677 |  |
| 13 | [Aultman Health Foundation](https://www.tamtam.ai/c/aultman-health-foundation) (aultman.org)<br>Leading provider of healthcare services in Stark County since 1892, offering high-quality care, educational opportunities, wellness programs, and community support | Hospitals and Health Care | 🇺🇸 Canton | 3,276 |  |
| 14 | [Medical Mutual](https://www.tamtam.ai/c/medical-mutual) (medmutual.com)<br>Provides diverse health, life, disability, dental, vision, and indemnity plans, including fully insured, self-funded group, Medicare, and individual plans. | Insurance | 🇺🇸 Cleveland | 3,216 | 1934 |
| 15 | [Gosh Enterprises Inc](https://www.tamtam.ai/c/gosh-enterprises-inc)<br>A growing company overseeing restaurant brands serving Philly Cheesesteaks, Korean-inspired cuisine, deli subs, supporting children in need, and providing solar services | Restaurants | 🇺🇸 Upper Arlington | 2,777 | 1986 |
| 16 | [Avery Dennison Label and Packaging Materials](https://www.tamtam.ai/c/avery-dennison-label-and-packaging-materials) (label.averydennison.com)<br>Global material science and digital identification solutions company, providing branding and information solutions optimizing efficiency, sustainability, and transparency, connecting brands and consumers. | Manufacturing | 🇺🇸 Mentor | 2,493 | 1935 |
| 17 | [AK Steel Corporation](https://www.tamtam.ai/c/ak-steel-corporation) (clevelandcliffs.com)<br>Cleveland-Cliffs is a leading North American steel producer, specializing in iron ore pellets and a variety of steel products for diverse markets | Primary Metal Manufacturing | 🇺🇸 Cleveland | 2,433 |  |
| 18 | [Flynn Group](https://www.tamtam.ai/c/flynn-group) (flynn.com)<br>Ownership and operation of multiple leading restaurant brands across the U.S., employing thousands and generating billions in sales. | Restaurants | 🇺🇸 Independence | 2,380 | 1998 |
| 19 | [Sotera Health Company](https://www.tamtam.ai/c/sotera-health-company) (soterahealth.com)<br>A global health company leveraging over 500 years of combined expertise in scientific safety across medical, pharma, tissue, and food industries | Hospitals and Health Care | 🇺🇸 Broadview Heights | 2,370 |  |
| 20 | [Great Day Improvements](https://www.tamtam.ai/c/great-day-improvements) (greatdayimprovements.com)<br>A vertically integrated, direct-to-consumer provider of premium home improvement products with diverse brands, operating across the US with expanding workforce | Construction | 🇺🇸 Twinsburg | 2,266 | 2011 |
| 21 | [Genesis Healthcare System](https://www.tamtam.ai/c/genesis-healthcare-system) (genesishcs.org)<br>Integrated healthcare delivery system in Southeastern Ohio offering not-for-profit hospital services, specialized centers, physician network, and various outpatient care centers and affiliates | Hospitals and Health Care | 🇺🇸 Zanesville | 2,059 | 1901 |
| 22 | [Kroger Technology & Digital](https://www.tamtam.ai/c/kroger-technology-and-digital) (thekrogerco.com)<br>A retail food company dedicated to feeding the human spirit through a seamless digital shopping experience and creating #ZeroHungerZeroWaste communities by 2025 | Retail | 🇺🇸 Cincinnati | 1,990 | 1883 |
| 23 | [Carter Lumber](https://www.tamtam.ai/c/carter-lumber) (carterlumber.com)<br>A leading building materials retailer with over 170 locations in 13 states, offering quality products and exceptional customer service to builders and DIY enthusiasts | Wholesale Building Materials | 🇺🇸 Kent | 1,973 | 1932 |
| 24 | [RDI Corporation](https://www.tamtam.ai/c/rdi-corporation) (rdicorp.com)<br>A comprehensive business solutions provider offering customized outsourced services including contact center, IT, market research, and digital strategy support | Outsourcing and Offshoring Consulting | 🇺🇸 Cincinnati | 1,947 | 1978 |
| 25 | [Sibcy Cline](https://www.tamtam.ai/c/sibcy-cline) (sibcycline.com)<br>A top independent real estate brokerage with a long history of family ownership and a focus on innovation in marketing and community involvement | Real Estate | 🇺🇸 Cincinnati | 1,572 |  |
| 26 | [Laird Connectivity](https://www.tamtam.ai/c/laird-connectivity) (ezurio.com)<br>A company that simplifies wireless connectivity through high-quality RF modules, System-On-Modules, antennas, IoT devices, and custom solutions with reliable support | Computers and Electronics Manufacturing | 🇺🇸 Akron | 1,517 |  |
| 27 | [Ferro Corporation](https://www.tamtam.ai/c/ferro-corporation) (vibrantz.com)<br>Leading global provider of color solutions, functional coatings, and specialty minerals enhancing performance and vibrancy across diverse industries. | Chemical Manufacturing | 🇺🇸 Mayfield Heights | 1,429 | 1919 |
| 28 | [Tremco Roofing and Building Maintenance](https://www.tamtam.ai/c/tremco-roofing-and-building-maintenance) (tremcoroofing.com)<br>A leading innovator in roofing and weatherproofing solutions since 1928, providing comprehensive services including maintenance, restoration, and repair with a focus on quality and innovation | Wholesale Building Materials | 🇺🇸 Beachwood | 1,295 | 1928 |
| 29 | [Kokosing](https://www.tamtam.ai/c/kokosing) (kokosing.biz)<br>Family-owned construction firm in the Midwest and Mid-Atlantic region, specializing in innovative solutions and self-performing up to 80% of project work | Construction | 🇺🇸 Westerville | 1,272 | 1951 |
| 30 | [Cliffs Natural Resources](https://www.tamtam.ai/c/cliffs-natural-resources) (clevelandcliffs.com)<br>A leading iron ore mining company in the US supplying pellets to the steel industry, with operations in Michigan, Minnesota, and Western Australia | Mining & Metals | 🇺🇸 Cleveland | 1,189 | 1847 |
| 31 | [Howard Hanna Ohio](https://www.tamtam.ai/c/howard-hanna-ohio) (howardhanna.com)<br>A leading, agent-owned real estate firm in Ohio, dedicated to providing exceptional customer service, building relationships, and making a positive impact in communities | Real Estate | 🇺🇸 Columbus | 1,154 | 1956 |
| 32 | [ClaySys Technologies](https://www.tamtam.ai/c/claysys-technologies) (claysys.com)<br>Leading technology consulting firm offering custom software development, RPA, NoCode, mobile/web app development, AI/ML, chatbots, and cloud computing services to global clients | IT Services and IT Consulting | 🇺🇸 Blue Ash | 1,121 | 2009 |
| 33 | [Austin Powder](https://www.tamtam.ai/c/austin-powder) (austinpowder.com)<br>The company manufactures industrial explosives, accessories, and offers technical blasting services globally | Mining | 🇺🇸 Cleveland | 1,090 | 1833 |
| 34 | [Avita Health System](https://www.tamtam.ai/c/avita-health-system) (avitahealth.org)<br>A nonprofit health care system in North Central Ohio with hospitals, clinics, and providers dedicated to improving patient experience and community wellbeing | Hospitals and Health Care | 🇺🇸 Galion | 1,066 | 2011 |
| 35 | [Mission Essential](https://www.tamtam.ai/c/mission-essential) (missionessential.com)<br>Innovative company providing mission essential solutions to defense, diplomatic, intelligence, law enforcement, and multinational clients with peerless talent and advanced technology | Defense and Space Manufacturing | 🇺🇸 New Albany | 1,048 | 2004 |
| 36 | [Cameron Mitchell Restaurants](https://www.tamtam.ai/c/cameron-mitchell-restaurants) (cameronmitchell.com)<br>Cameron Mitchell Restaurants operates 48 diverse restaurants, premier event catering, and a luxury boutique hotel in multiple locations across the US | Restaurants | 🇺🇸 Columbus | 1,033 | 1993 |
| 37 | [Tire Discounters, Inc.](https://www.tamtam.ai/c/tire-discounters-inc) (tirediscounters.com)<br>A leading independent tire retailer providing unique customer benefits and automotive services with over 190 locations across several states | Vehicle Repair and Maintenance | 🇺🇸 Cincinnati | 968 | 1976 |
| 38 | [G&J Pepsi-Cola Bottlers, Inc.](https://www.tamtam.ai/c/g-and-j-pepsi-cola-bottlers-inc) (gjpepsi.com)<br>A family-owned Pepsi-Cola bottler with 14 locations in Ohio and Kentucky, producing, distributing, and marketing over 650 refreshment options | Manufacturing | 🇺🇸 Cincinnati | 933 | 1925 |
| 39 | [Associated Materials Innovations](https://www.tamtam.ai/c/associated-materials-innovations) (associatedmaterials.com)<br>A leading provider of residential building products, Associated Materials empowers employees to innovate sustainable solutions for beautiful, energy-efficient homes nationwide | Wholesale Building Materials | 🇺🇸 Cuyahoga Falls | 931 | 1947 |
| 40 | [OnPoint Group, LLC](https://www.tamtam.ai/c/onpoint-group-llc) (onpointgroup.com)<br>We optimize total cost of ownership for critical equipment through expertise and innovation in procurement, maintenance, data management and asset replacement | Facilities Services | 🇺🇸 Perrysburg | 819 |  |
| 41 | [World Group](https://www.tamtam.ai/c/world-group) (worldshipping.com)<br>Provider of end-to-end supply chain and logistics solutions including ocean drayage, trucking, freight forwarding, customs brokerage, warehousing, and distribution worldwide. | Transportation, Logistics, Supply Chain and Storage | 🇺🇸 Rocky River | 817 | 1960 |
| 42 | [TalentLaunch](https://www.tamtam.ai/c/talentlaunch) (mytalentlaunch.com)<br>A strategic partner for staffing firms, offering business solutions, technology, marketing, accounting, and payroll services to accelerate growth | Staffing and Recruiting | 🇺🇸 Valley View | 805 | 2016 |
| 43 | [OTC Industrial Technologies](https://www.tamtam.ai/c/otc-industrial-technologies) (otcindustrial.com)<br>A leading industrial distributor and service provider offering customized solutions for various industries with a wide range of expert solutions | Automation Machinery Manufacturing | 🇺🇸 Columbus | 775 | 1963 |
| 44 | [Ohio National Financial Services](https://www.tamtam.ai/c/ohio-national-financial-services) (constellationinsurance.com)<br>A financial services company offering insurance protection, wealth accumulation options, and retirement solutions through a network of agencies and distribution organizations | Financial Services | 🇺🇸 Cincinnati | 753 | 1909 |
| 45 | [Staffmark Group](https://www.tamtam.ai/c/staffmark-group) (smgroupna.com)<br>Specializing in staffing and recruiting across commercial, technical, and professional services, as well as process outsourcing Owned by RGF Staffing | Staffing and Recruiting | 🇺🇸 Cincinnati | 744 |  |
| 46 | [National Interstate Insurance Company](https://www.tamtam.ai/c/national-interstate-insurance-company) (natl.com)<br>A leading provider of insurance solutions for commercial transportation industries nationwide, offering innovative products, superior financial strength, and personalized support | Insurance | 🇺🇸 Richfield | 733 |  |
| 47 | [I Am Boundless](https://www.tamtam.ai/c/i-am-boundless) (iamboundless.org)<br>The company provides person-centered care for individuals with intellectual and developmental disabilities and behavioral health challenges, empowering them to live boundless lives | Individual and Family Services | 🇺🇸 Worthington | 716 | 1980 |
| 48 | [Alliance Data Card Services](https://www.tamtam.ai/c/alliance-data-card-services) (breadfinancial.com)<br>Bread Financial provides card services previously offered by Alliance Data, offering financial solutions and information through their website and social media | Financial Services | 🇺🇸 Columbus | 712 |  |
| 49 | [LSI Industries Inc.](https://www.tamtam.ai/c/lsi-industries-inc) (lsicorp.com)<br>Manufactures high-performance lighting, retail display solutions, digital signage, and food display equipment with project management for large rollouts. | Manufacturing | 🇺🇸 Cincinnati | 704 | 1976 |
| 50 | [Core Specialty Insurance Holdings, Inc.](https://www.tamtam.ai/c/core-specialty-insurance-holdings-inc) (corespecialty.com)<br>Specialty insurer offering property, casualty, and marine insurance for small to mid-sized businesses Emphasizing fast, efficient solutions and dedicated underwriting expertise | Insurance | 🇺🇸 Cincinnati | 682 |  |

## 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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Source: https://www.tamtam.ai/l/holding-companies-ohio