Des Moines, Iowa-based EMCReinsuranceCo. said RonHallenbeck, who served as president for nearly 22 years,has retired, and Vicki Freese, EMC Reinsurance’sassistant reinsurance manager, has been named president. Freese hasbeen with EMC for nearly 40 years.

Columbia, South Carolina-based insurance technology and servicescompany Seibels said it has appointedNan D. Brunson vice president of businessdevelopment, sales and marketing. She joins from FocusTechnologies, where she was a senior vice president.

Switzerland-based Allied WorldAssurance Company Holdings AG said that JasonGlasgow has been appointed vice president and practiceleader of technology, privacy and network security professionalliability for Allied World U.S. He joins from Travelers, where wasvice president and cyber risk product manager.

Allied World also said it has appointedDale Chow senior vice president of professionallines for Allied World Bermuda. He joins Allied World fromEndurance Insurance Bermuda, where he served as a senior vicepresident within the professional lines division.

Bethesda, Maryland-based GeneraliGlobal Assistance said it has appointedJulie Jamsa vice president of servicedelivery for its identity and digital protection services globalunit. She joins from National Geographic, where she was vicepresident of catalog and e-commerce.

Kennesaw, Georgia-based Breckenridge InsuranceGroup said it has named Pete Feeney,CIC, president of its brokerage division, Ron Boudreaux executivevice president of national accounts and Robert J. Matamorosexecutive vice president of specialized distribution. Feeney joinsfrom Swett & Crawford, where he was senior vice president andsales leader. Boudreaux also joins from Swett & Crawford, wherehe was a senior vice president. Matamoros has been withBreckenridge since 2013, most recently as executive vice presidentin its brokerage division.

Toronto-based AccidentSupport Services International said it hasappointed Kenneth Eagleson as vice presidentof U.S. Insurance Programs. He joins from SuccessData LLC.

New York City-based insurance broker MarshLLC said it has promoted MarkKarlson to U.S. healthcare practice leader fromFinPro national health care practice leader. He joined the companyin 1989.

Navigators Group Inc. said ithas restructured its leadership team for its global claimsorganization, effective Sept. 1:

Glen Bronstein has been promoted to the newlycreated role of global chief claims officer. Bronstein joinedNavigators to lead the U.S. claims organization in 2013.

Marina Barg has been promoted to chief claimsofficer for U.S. insurance, succeeding Bronstein. Barg joinedNavigators in January 2014 as the leader of its U.S. casualtyclaims unit.

Michael Phipps has been named claims managerfor Navigators International Insurance Co, the company's recentlyauthorized United Kingdom-domiciled insurance company. He joinsfrom Chubb and is based in London.