HSBC bank Chief Executive Michael Geoghegan said Monday he would donate up to four million pounds (4.45 million euros, 6.06 million dollars) of his bonus to charity over the next four years.

Geoghegan, who relocated from HSBC's London headquarters to Hong Kong earlier this year, revealed the news in a statement issued alongside the bank's 2009 results.

"I can confirm that between now and 2013 I will give up to four million pounds to charities around the world, including important causes in Hong Kong and in the UK, where I was a resident for six years until January this year," Geoghegan said in the statement.

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