Company builder

Several months after Vatera Holdings became Rib-X Pharmaceuticals Inc.'s biggest backer, the firm has now installed a handpicked CEO and new commercial head. The moves suggest any plans for a public exit have taken a backseat to building a commercial organization for the antibiotic delafloxacin.

Vatera is a private equity firm established by Michael Jaharis soon after the specialty pharma company he founded, Kos Pharmaceuticals Inc., was acquired in 2006 for $3.7 billion by Abbott Laboratories (NYSE:ABT)...