BankUnited, a Florida-based savings and loan holding company with depository and wealth management businesses, filed on Friday with the SEC to raise up to $300 million in an initial public offering. The Miami Lakes, FL-based company, which has $11.2 billion of assets, was bought out in May 2009 by a group of private equity firms including WL Ross, Carlyle, Centerbridge and Blackstone. BankUnited booked $588 million in total interest and non-interest income in 2009 (after its inception on April 28) and plans to list on the NYSE under the symbol BKU. Morgan Stanley and BofA Merrill Lynch are the lead underwriters on the deal, for which pricing terms and timing were not disclosed.