A media firm linked to Steve Bannon and exiled Chinese businessman Guo Wengui was among companies that agreed to pay more than $539 million to settle a U.S. regulator’s claims that the businesses illegally sold shares.   GTV Media Group Inc., which has ties to Bannon and Guo, sold shares between April and and June 2020 without registering the offering, the U.S. Securities and Exchange Commission said in a Monday statement. The SEC also accused Saraca Media Group Inc. and Voice of Guo Media Inc. of participating in the misconduct.