• Sarah Coyne has been appointed chief of the business and securities fraud section at the Eastern District U.S. Attorney’s Office. Coyne, who joined the office in 2003, was the section’s deputy chief.

• Chadbourne & Parke has added Mark Beckett and Rachel Thorn as partners on the international arbitration team. Beckett focuses on the resolution of disputes relating to project construction, long-term purchase agreements, complex commercial, acquisition and joint venture disputes. Thorn specializes in international commercial arbitration, international litigation and public international law. They were partners at Latham & Watkins.