Professional services firm Marsh McLennan announced the appointment of Katherine Brennan as senior vice president and general counsel.

She will report to President and Chief Executive Dan Glaser and join the executive committee.

Brennan will lead Marsh McLennan’s global legal, compliance, and public affairs functions and will also continue to lead the company’s environmental, social, and governance (ESG) efforts.

She succeeds Peter Beshar, who has served as executive vice president and general counsel since 2004. Last fall, Beshar was nominated by President Joe Biden to serve as the general counsel of the U.S. Department of the Air Force. On March 10, the Senate unanimously confirmed his nomination.

Brennan has held several legal and compliance leadership roles at Marsh McLennan, serving most recently as general counsel at Marsh. She also served as deputy general counsel, corporate secretary and chief compliance officer for Marsh McLennan from 2017-21. Prior to that, she worked as general counsel of Guy Carpenter.

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