EXHIBIT 11 Flagstar Bancorp, Inc. Computation of Net Earnings per Share Net earnings per share - basic and net earnings per share - diluted are computed by dividing each such earnings per share by the weighted average number of common stock and common stock equivalents outstanding during the period, respectively (in thousands, except per share data). FOR THE NINE MONTHS ENDED SEPTEMBER 30, ----------------------------- 2006 2005 ------------- -------------- Net Earnings $ 68,303 $ 57,038 Average common shares outstanding 63,475 61,945 Net earnings per share - basic $ 1.08 $ 0.92 Average common share equivalents outstanding 64,323 64,118 Net earnings per share - diluted $ 1.06 $ 0.89