EXHIBIT 11 CAPSTEAD MORTGAGE CORPORATION COMPUTATION OF NET INCOME PER SHARE EXHIBIT 11 COMPUTATION OF NET INCOME PER SHARE CAPSTEAD MORTGAGE CORPORATION 1993 1992 1991 ------------ ----------- ----------- Primary: Average number of common shares outstanding 15,053,000 14,333,000 8,964,000 Incremental shares calculated using the Treasury Stock method 93,000 61,000 - ------------ ----------- ----------- 15,146,000 14,394,000 8,964,000 ============ =========== =========== Net income $ 94,256,000 $53,191,000 $33,717,000 Less cash dividends paid on convertible preferred stock: Series A ($1.60 paid per share) (1,274,000) (1,823,000) (7,499,000) Series B ($0.10 paid per share) (37,318,000) (2,884,000) - ------------ ----------- ----------- Net income available to common stockholders $ 55,664,000 $48,484,000 $26,218,000 ============ =========== =========== Primary net income per share* $3.68 $3.37 $2.92 Fully diluted: Average number of common shares outstanding 15,053,000 14,333,000 8,964,000 Assumed conversion of convertible preferred stock: Series A 741,000 1,157,000 4,670,000 Series B ** ** - Incremental shares calculated using the Treasury Stock method 136,000 101,000 49,000 ------------ ----------- ----------- 15,930,000 15,591,000 13,683,000 ============ =========== =========== Net income $ 94,256,000 $53,191,000 $33,717,000 Less cash dividends paid on Series B Preferred Stock (37,318,000) (2,884,000) - ------------ ----------- ----------- Net income $ 56,938,000 $50,307,000 $33,717,000 ============ =========== =========== Fully diluted net income per share $ 3.57 $ 3.23 $ 2.46 * During the years ended December 31, 1992 and 1991, 1,382,551 and 3,140,304 shares of the Series A Preferred Stock had been converted into 1,244,261 and 2,826,256 shares of common stock, respectively. If these conversions had occurred at the beginning of the respective years, primary net income per share would have been $3.32 and $2.60 per share for the year ended December 31, 1992 and 1991, respectively. ** The Series B Preferred Stock is not considered convertible for purposes of calculating fully diluted net income per share as it is currently antidilutive.