The group that owns the fading Playboy brand on Thursday rejected a $100 million buyout offer from Cooper Hefner, the son of the magazine’s late founder.“After careful review and consideration of Hefner’s unsolicited proposal, our Board determined that the proposal substantially undervalues the Playboy assets and is not in the best interest of PLBY Group’s stockholders,” CEO Ben Kohn said in a statement. “While we certainly understand and are appreciative of the interest in Playboy’s unparalleled brand, the ...