Insurance group ACE has appointed John Keogh, vice chairman, ACE Limited, and chairman, ACE Overseas General, to the additional role of chief operating officer, ACE Limited.

In this new role, Keogh will be responsible for all property and casualty (P&C) insurance operations of the company globally, which includes the insurance – North American and insurance – overseas general business segments.

Keogh joined ACE in 2006 to head the company’s overseas general business. He was appointed vice chairman of ACE in 2010.

Keogh joined ACE after more than 20 years with American International Group (AIG), where he last served as senior vice president, Domestic General Insurance, and president and CEO of National Union Fire Insurance.

In addition, the company has appointed John Lupica, chief operating officer, insurance – North America, and president, ACE USA, as new chairman, insurance – North America, succeeding Dowd in that capacity.

Lupica will be responsible for all P&C insurance operations of the company in the US, Canada and Bermuda.

Lupica, who will now report to Keogh and become a member of the company’s executive committee, will retain his specific executive responsibilities as president of ACE USA.

With more than 20 years in the insurance business, Lupica joined ACE USA as executive vice president of Professional Risk in 2000.

Prior to joining ACE, Lupica served as senior vice president for Munich-American Risk Partners, He also held various management positions at AIG.