A Corporate Republic (from Civilization: Call to Power, one of the government types available in the Genetic Age).
"The Imperial Trading Companies such as the various East India Companies should possibly be considered corporate states, being semi-sovereign with the power to wage war and establish colonies."
"The Imperial Trading Companies such as the various East India Companies should possibly be considered corporate states, being semi-sovereign with the power to wage war and establish colonies."
https://en.wikipedia.org/wiki/Corporate_republic