Los Angeles Times publisher Eddy Hartenstein has been upped to prexy and CEO of parent company Tribune Co.

Hartenstein has been co-prexy and a member of the executive council overseeing the Chicago-based newspaper and TV station owner since October, when former CEO Randy Michaels was ousted. Hartenstein will remain publisher and CEO of the Los Angeles Times, a post he has held since August 2008. Tribune’s board decided the company would be better served with a single leader at the top. Tribune has been grappling with bankruptcy proceedings for more than two years, stemming from its 2007 takeover by Chi real estate magnate Sam Zell, who remains Tribune chairman.

Kathy Thomson has been appointed prexy and COO of the LA Times Media Group. Thomson worked for Hartenstein at the Times in 2008 and 2009 as chief of staff. The two also worked together at satcaster DirecTV, where Hartenstein was CEO.