Luthorcorp - Earth 2 - Suicide Squad: Kill the Justice League

A multinational conglomerate spanning technological, media, scientific and medical research, Luthorcorp was owned by Lex Luthor until Brainiac invaded Earth 2 and wiped out the world. 

Luthor would eventually abandon Earth 2 three years later, with the help of Task Force X, and seek asylum on Earth 1. There, he assumed the identity of the late Lex and took over running Lexcorp.