(Bloomberg) -- Mark Levine, one of the most senior members of Elliott Investment Management’s London office, is preparing to retire after 23 years with the activist investment firm, people with knowledge of the matter said. 

Levine, a 45-year-old American, is set to step down at the end of November, according to the people, who asked not to be identified because the information is private. 

He started with Elliott in 1999, just four years after the firm set up its London outpost. Levine has been one of its senior investment professionals in the British capital alongside London office head Gordon Singer, European private equity head Paul Best and senior portfolio manager Nabeel Bhanji. 

A representative for Elliott declined to comment.

Elliott is one of Europe’s busiest activist investors and has waged high-profile campaigns at a number of UK FTSE 100 companies, including drugmaker GSK Plc, power generator SSE Plc and homebuilder Taylor Wimpey Plc. The firm employs more than 100 people in London, making it Elliott’s largest office outside the US.

Levine’s move follows other senior departures from Elliott’s London office including Franck Tuil and James Smith, who have both gone on to start their own activist funds. 

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