Chubb said it has made several executive leadership changes in its North American general insurance business, with John Lupica becoming executive chairman.

Lupica was vice chairman of Chubb Group and president of North American insurance. In his new role, Lupica will have executive oversight, including strategy, governance and attention to major issues, of Chubb’s general insurance business in North America.

Juan Luis Ortega succeeds Lupica as president of the North American business. Ortega was executive vice president of Chubb Group and president of Chubb’s overseas general insurance unit. Now reporting to Lupica, Ortega will executive operating responsibility for North America insurance’s top and bottom line.

Scott Meyer, senior vice president of Chubb Group and division president of Chubb’s wholesale excess and surplus lines company Westchester, is named to the new position of chief operating officer of North America insurance.

In addition, Christopher Maleno, senior vice president of Chubb Group, has been appointed vice chairman, North America insurance. He will retain his current responsibilities as division president, North America field operations, and will report to Ortega.

All of the appointments are effective immediately.

“These management changes and increased responsibilities recognize the size and complexity of our North America Insurance business, along with our ambitions for its future growth and development. Chubb is the largest commercial insurer and insurer of high-net-worth individuals in the United States, and our North American business is a major company in its own right. We are bringing to bear at the top of the division an extremely strong team of experienced Chubb leaders,” said Evan G. Greenberg, Chubb CEO.