[1] Approximately 21% of the company is publicly-traded; the remainder is controlled by San Faustin S.A., which is in turn controlled by Rocca & Partners Stichting Administratiekantoor Aandelen San Faustin, a Stichting.

[1] The company takes its name from the Latin words Ter (three) and Eternium (eternal) in reference to the integration of the three steel mills.

Ternium was formed in 2005 by the consolidation of three companies: Siderar of Argentina, Sidor of Venezuela and Hylsa of Mexico.

[1] In 2007, Ternium acquired Grupo IMSA, expanding its operations into Guatemala and the United States.

[1][2] In April 2008, after a series of worker disputes over pay which led to strike actions, Sidor was nationalized by the government of Venezuela.