Illinois Tool Works Inc.

What does Illinois Tool Works own?
ITW owns 88 operating divisions across seven segments, holding brands including Miller, Hobart, Instron, Paslode, Permatex, Plexus, Zip-Pak, Vulcan, and Ramset, plus hundreds of niche industrial product lines.

Is Illinois Tool Works publicly traded?
Yes. It trades on the New York Stock Exchange under ticker ITW and is an S&P 500 component.

Who founded Illinois Tool Works?
Byron Laflin Smith founded the company in Chicago in 1912. He had earlier founded Northern Trust in 1889, so both companies trace to the same founder.

Where is Illinois Tool Works headquartered?
The company is headquartered in Glenview, Illinois, a suburb of Chicago. Its 88 divisions operate in 49 countries.

How many brands does Illinois Tool Works own?
ITW operates 88 divisions organized into seven segments, encompassing hundreds of product brands and thousands of SKUs. Its most visible brands include Miller, Hobart, Instron, Paslode, and Permatex.

Who owns Illinois Tool Works?
Public shareholders own the company, with institutional investors holding most shares. The founding Smith family's involvement ended generations ago.

What is the ITW Business Model?
It is the company's operating methodology combining the 80/20 front-to-back process, Customer-Back Innovation, and decentralized entrepreneurship. Each division focuses on its most valuable products and customers, funds customer-driven innovation, and manages its own P&L.

The company was founded in Chicago in 1912 by Byron Laflin Smith, the same banker who had founded Northern Trust in 1889, making ITW and the custody bank siblings from one of Chicago's most consequential business families. Smith financed a small toolmaking shop to supply the metalworking industry, and the business incorporated in 1915.

For its first half-century ITW was a solid but unremarkable tool and fastener maker. The transformation came under mid-twentieth century leadership that discovered the power of staying small on purpose: splitting operations into autonomous divisions, each focused on a narrow product niche, rather than centralizing scale. The 80/20 discipline, dropping the unprofitable tail of products and customers, became doctrine in the 1980s and 1990s.

Acquisition fueled the model. ITW bought hundreds of niche manufacturers over decades, folding them into divisions and running each through the business model: Miller Electric in welding, Hobart in food equipment, Instron in testing machines, Paslode in construction fastening, and dozens of specialty makers in packaging, adhesives, and polymers. At its peak complexity the company ran more than 800 operating units; deliberate consolidation over the 2010s reduced that to 88 larger divisions today.

CEOs have come from inside for decades, a sign of how thoroughly the model institutionalizes itself. Scott Santi led from 2012 to 2024, a period of margin records and portfolio simplification. Christopher O'Herlihy, a 30-plus-year ITW veteran and former vice chairman, succeeded him.

Recent results show the model's resilience. Fiscal 2025 revenue of $16 billion grew just under 1 percent, but operating income hit records, Customer-Back Innovation contributed 2.4 percent to revenue growth, and the company extended its dividend increase streak to 62 years, among the longest of any industrial company.

ITW publishes annual sustainability reporting focused on operational footprint: energy use, emissions, waste, and water across its division network, plus product stewardship for chemicals businesses.

The company's decentralized structure makes sustainability a division-level execution issue, and it reports progress on renewable energy purchasing and manufacturing waste reduction. It has no B Corp certification and its disclosures are self-reported, though emissions data receives external assurance.

The more relevant ethical frame for ITW is governance quality: a century-plus of conservative accounting, no major fraud or restatement scandals on its record, and consistent recognition on workplace and corporate responsibility rankings.

ITW is a perennial member of the Fortune 500, ranking in the Fortune 300 cohort, and an S&P 500 component. Its 62-year dividend increase streak places it in the small group of Dividend Kings.

The company appears regularly on Forbes and Fortune workplace and management quality rankings, and the ITW Business Model is taught in business schools as a case study in decentralized operations and the 80/20 principle.

ITW maintains an unusually clean public record for a 110-year-old manufacturer. Its notable regulatory matters are routine: product liability cases common to any industrial maker of welding and construction equipment, standard EPA compliance at chemical facilities, and periodic antitrust conditions on acquisitions that have required occasional divestitures.

The most persistent criticisms are structural rather than legal: the 80/20 discipline periodically means layoffs and plant consolidations in communities where divisions close product lines, and the portfolio's plastics and chemicals units face the same tightening environmental compliance environment as peer manufacturers. No major unresolved regulatory action exists as of November 2026.