Home/Companies/CIK 0000007383

Exchange

Entity type

operating

Fiscal year end

Dec 31

Headquarters

OH

Research Summary

AI-assisted · Grounded in filings

Updated Nov 26, 2025

ARMCO INC

Based on my research, ARMCO Inc was a major integrated steel manufacturer that began operations in 1901 and became known for innovations in sheet steel production. The company operated blast furnaces and rolling mills and diversified into metal fabrication and industrial products. Given the latest filing date of September 1999, this was near the end of ARMCO's independent operation before it was acquired by AK Steel in 1999. ARMCO Inc, a steel works, blast furnace and rolling mill operator with CIK 7383, was founded in 1899 as the American Rolling Mill Company and became a pioneer in sheet steel manufacturing and metal fabrication. The company operated major production facilities across multiple U.S. locations, producing steel mill products including sheet iron, steel coil, and various fabricated metal goods serving automotive, construction, and industrial customers. As an integrated steel manufacturer, ARMCO faced significant exposure to commodity price volatility, labor costs, and cyclical demand patterns inherent to the steel industry, along with regulatory compliance obligations concerning air and water pollution from blast furnace and coke oven operations. The company expanded through strategic partnerships, including a 1989 joint venture with Kawasaki Steel Corporation, eventually leading to its acquisition by AK Steel in 1999. For comprehensive details on ARMCO Inc's financial performance and operational structure, view live SEC filings on Earnings Feed.