Sandra S. Wijnberg, former chief executive officer of Marsh & McLennan Companies, has joined Jeff Greenberg at his New York-based investment firm Aquiline Holdings LLC as chief administrative officer.

Ms. Wijnberg was CFO from 2000 to 2006 at the New York-based professional services firm MMC where Mr. Greenberg served as chief executive officer until his ouster in 2004 after a probe of brokerage bid-rigging. MMC announced Ms. Wijnberg’s resignation in late 2005. She remained until March 2006.

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