Ace Ltd. on Tuesday announced the composition of the leadership teams it intends to appoint for the company's North American business units once it completes its acquisition of Chubb Corp., expected in the first quarter of next year.

• Christopher A. Maleno will serve as senior vice president of the new Chubb group and as division president of North America national accounts. Mr. Maleno is currently senior vice president of Ace and division president for Ace USA. He will report to John Lupica, who, as previously announced, will serve as vice chairman of the parent company and co-president of the North America insurance division. Philadelphia-based Mr. Lupica is currently vice chairman of Ace and chairman of Ace's North America insurance businesses.

• Steven R. Pozzi will serve as senior vice president of the new Chubb group and division president of North America middle market. Mr. Pozzi is currently executive vice president of Chubb and chief operating officer of Chubb commercial insurance. He will report to Dino E. Robusto, who, as previously announced, will serve as executive vice president of the parent company and co-president of the North America insurance division. Mr. Robusto is currently Warren, New Jersey-based executive vice president of Chubb and president of Chubb commercial and specialty lines.

• James A. Williamson will serve as vice president of the new Chubb group and division president of North America retail small commercial. Mr. Williamson is currently division president of Ace private risk services, Ace's high net worth personal lines business. Mr. Williamson will report to Mr. Robusto.

• Bruce L. Kessler will serve as senior vice president of the new Chubb group and division president of North America wholesale/excess and surplus lines. Mr. Kessler is currently division president of Ace Westchester, Ace's E&S specialty company in North America. Mr. Kessler will continue to report to John Lupica.

• David Lupica will serve as COO of North America wholesale/excess and surplus lines. Currently division president of Ace commercial risk services, he will work in partnership with Mr. Kessler in the operation of the E&S business, the wholesale small commercial division and the North America programs business. Mr. Lupica will report to Mr. Kessler.

• Joseph S. Clabby will serve as vice president of the new Chubb group and as division president of Ace Bermuda and Ace global accounts. Mr. Clabby is currently division president of Ace Bermuda and Ace global accounts. He will continue to report to John Lupica.

• Michael J. Coleman will serve as vice president of the new Chubb group and division president of North America agriculture. Mr. Coleman is currently division president of Ace agriculture and will continue to have executive operating responsibility for the commercial property/casualty insurance business that serves farmers and other agribusiness clients in the United States. Mr. Coleman will continue to report to John Lupica.

Ace also announced the leadership team it intends to appoint for the professional lines, surety and property North American product lines.

• Robert C. Cox will serve as division chairman of North America professional lines, and Scott A. Meyer will serve as division president of North America professional lines. Mr. Cox is currently executive vice president of Chubb and COO of Chubb specialty insurance, and Mr. Meyer is currently division president of Ace's North America professional lines. Mr. Cox will report to John Lupica and Mr. Meyer will report to Mr. Cox.

• Stephen M. Haney will serve as division chairman of North America surety and as chief underwriting officer of global surety. Mr. Haney is currently division president of surety for Ace USA and chief underwriting officer of global surety for Ace. Mr. Haney will continue to report to John Lupica.

• Richard A. Ciullo will serve as COO of North America surety. He is currently senior vice president and COO of Chubb surety. Mr. Ciullo will report to Mr. Haney.

• Derek Talbott will serve as division chairman of North America property. Mr. Talbott is currently division president of Ace North America property and specialty lines. He will continue to report to John Lupica.