NEW YORK ( TheStreet) -- BankUnited plans to raise $630 million in an initial public offering -- twice as much as management originally filed to raise in October of last year. BankUnited plans to sell four million shares, and current shareholders will sell 36.25 million shares for $23 to $25 a share, according to a Securities and Exchange Commission filing. Shareholders of the bank include Wilbur Ross and BankUnited CEO John Kanas, Carlyle Group LP, Blackstone Group ( BX) and Centerbridge Partners. The bank was purchased from the Federal Deposit Insurance Corp.in May of 2009 following the financial crisis and its private equity investors have injected about $900 million into the bank, according to published reports. Underwriters of the IPO are Morgan Stanley ( MS), Bank of America Merrill Lynch ( BAC), Deutsche Bank ( DB) and Goldman Sachs ( GS). --Written by Maria Woehr in New York. To contact the writer of this article, click here: Maria Woehr. To follow the writer on Twitter, go to http://twitter.com/newsgirlmw. To submit a news tip, send an email to: firstname.lastname@example.org.