Griffin’s Citadel Securities Loses Three Executives

Ken Griffin’s Citadel LLC lost three senior executives at the securities unit, bringing to nine the number of top-level employees who have departed in the last 15 months.

Chris Boas, head of credit markets for Citadel Securities, Brad Kurtzman, who ran equity derivatives sales and trading, and Carl Mayer, head of leveraged finance, all left, Devon Spurgeon, a spokeswoman for Chicago-based Citadel, confirmed in a telephone interview. Citadel is conducting a search for executives to fill the vacancies left by Boas and Kurtzman, she said. John Kilgallon, who currently works in the leveraged finance group, will replace Mayer.