JPMorgan names Marianne Lake CFO

Lake, a chartered accountant, managed global finance infrastructure and control functions in JPMorgan's corporate finance group from 2004 to 2007. Before that, she was a senior financial officer for the company in the United Kingdom.

She also worked for PriceWaterhouseCoopers in London and Sydney before joining JPMorgan.

Lake is a citizen of both the United States and the United Kingdom, having been born to an American mother and a British father.

MANAGEMENT RESHUFFLES

Dimon took Braunstein out of his line of direct reports in July, assigning him to answer first to Matt Zames, a top mortgage markets executive whom he had just named co-chief operating officer of the company.

Dimon, in testimony before a congressional committee in Washington in June, cited Braunstein as being among top lieutenants whom he had relied upon to check the London Whale reports.

Others he cited were company risk officers. In October, former Chief Risk Officer Barry Zubrow said that he would retire at the end of the year. Another person whom Dimon cited was Ina Drew, who was head of the Chief Investment Office and who left shortly after the losses surfaced.

Besides the shakeups this year, Dimon shuffled some of his top executives at least once in each of the three previous years. He has said that he likes to rotate his top staff through different positions as part of preparing potential successors.

In June 2011, Dimon replaced retail banking chief Charlie Scharf, who has since become CEO of Visa Inc.

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