Peter Tague, Citigroup's co-head of mergers and one of the most senior dealmakers on Wall Street, is leaving the firm, according to people familiar with the matter.

Since taking on the role in 2012, Tague has helped push Citi higher in the adviser rankings, from seventh in 2013 to fourth last year, according to Dealogic. The division’s 2017 revenue of $311m was its second-highest ever.