btb Verlag

btb Verlag is owned by Bertelsmann SE & Co. KGaA, headquartered in Germany. No. The ultimate owner of btb Verlag, Bertelsmann SE & Co. KGaA, is headquartered in Germany, not in the United States.

Bertelsmann is a private multinational media conglomerate that owns Penguin Random House, RTL Group, and BMG, among other subsidiaries.

Penguin Random House Verlagsgruppe GmbH