Founded 1894
UL Solutions Inc.
Northbrook, Illinois, United States
Independent testing, inspection, and certification (TIC) company that evaluates electrical, fire, and other safety risks in products against its own UL safety standards, issuing the UL Listed/Certified marks manufacturers use to demonstrate regulatory and retailer compliance, alongside related advisory and software offerings.
- Headquarters
- Northbrook, Illinois, United States
- Founded
- 1894
- Website
- www.ul.com
Notable facts
- Founded in 1894 as the Underwriters' Electrical Bureau by William Henry Merrill, an electrical engineer hired by insurance underwriters to investigate electrical safety at the 1893 World's Columbian Exposition in Chicago.
- Published its first Standard for Safety, "Tin Clad Fire Doors," in 1903, marking its shift into codified safety standards.
- Moved headquarters to a 153-acre campus in Northbrook, Illinois in 1979.
- Completed an upsized IPO on the New York Stock Exchange (ticker ULS) on April 16, 2024, pricing at $28.00/share and raising $946.4 million for selling shareholder UL Standards & Engagement.
Testing categories
Sources. This profile is compiled from public reference data, WebSearch-verified againstsource 1 · source 2 · source 3. Data as of 2026-07-14. See methodology.
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