Companies
Steel Dynamics
Mining and metalsFort Wayne, IndianaSTLDAbout 14,400 employees
More about Steel Dynamics
Steel producer and metals recycler that is also building an aluminum flat-rolled products business
Revenue
$18.2B
Fiscal 2025, up about 4%
Employees
About 14,400
As of December 2025
Stock
STLD
Nasdaq
Headquarters
Fort Wayne, Indiana
CEO
Mark Millett
Since January 2012; Theresa Wagler to become CEO on January 1, 2027
Main businessesSteel operations, metals recycling, steel fabrication, aluminum
Current strategyRamping up its Columbus, Mississippi aluminum flat-rolled mill to sell recycled-content sheet for cans, autos and industry
CompetitorsNucor, Cleveland-Cliffs, Commercial Metals
Related companiesNucor
Checked October 11, 2026 · Sources: sec.gov, sec.gov (2), sec.gov (3)
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