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Sergio Ermotti, who was appointed CEO of UBS AG in November 2012 in the wake of a major trading scandal, said the misconduct does not reflect the bank’s values or standards.

“We deeply regret this inappropriate and unethical behavior. No amount of profit is more important than the reputation of the firm, and we are committed to doing business with integrity,” he said.

With more than 2.2 trillion Swiss francs ($2.4 trillion) in invested assets, UBS is one of the world’s largest managers of private wealth assets. At last count, the bank had 63,745 employees in 57 countries and said it aims for a headcount of 54,000 in 2015.

Along with Credit Suisse, the second-largest Swiss bank, UBS is on the list of the 29 “global systemically important banks” that the Basel, Switzerland-based Bank for International Settlements, the central bank for central banks, considers too big to fail.

It’s not the first time that UBS has fallen afoul of regulators. Notably in 2009, U.S. authorities fined UBS $780 million in 2009 for helping U.S. citizens avoid paying taxes.

The U.S. government has since been pushing Switzerland to loosen its rules on banking secrecy and has been trying to shed its image as a tax haven, signing deals with the United States, Germany and Britain to provide greater assistance to foreign tax authorities seeking information on their citizens’ accounts.

In April, Ermotti called Switzerland’s tax disputes with the United States and some European nations “an economic war” putting thousands of jobs at risk.

And in September 2011 the bank announced more than $2 billion in losses and blamed a 32-year-old rogue trader, Kweku Adoboli, at its London office for Britain’s biggest-ever fraud at a bank.

Britain’s financial regulator fined UBS, saying its internal controls were inadequate to prevent Adoboli, a relatively inexperienced trader, from making vast and risky bets. Adoboli has been sentenced to seven years in prison.