Politan Capital's Quentin Koffey sent a letter to Masimo CEO Joe Kiani on Wednesday, demanding information about the health-tech company's proposed spinoff of its consumer business. Koffey, who won a seat on Masimo's board last year through a proxy fight, said that, despite his "repeated requests," he has "not received information as basic and fundamental as even the name of the contemplated JV partner," weeks after the company first announced it was exploring a split. Masimo acquired consumer audio company ...