EXHIBIT 11 CAPSTEAD MORTGAGE CORPORATION COMPUTATION OF NET INCOME PER SHARE* (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS) QUARTER ENDED NINE MONTHS ENDED SEPTEMBER 30 SEPTEMBER 30 ------------------------ ---------------------- 1995 1994 1995 1994 --------- ---------- ---------- ---------- PRIMARY: Average number of common shares outstanding 15,384 15,266 15,337 15,236 Incremental shares calculated using the Treasury Stock method 24 11 11 34 ------- ------- -------- -------- 15,408 15,277 15,348 15,270 ======= ======= ======== ======== Net income $21,297 $22,267 $ 54,401 $ 65,766 Less cash dividends paid on convertible preferred stock: Series A ($0.40 per share) (230) (254) (718) (796) Series B ($0.315 per share) (9,616) (9,475) (28,749) (28,323) ------- ------- -------- -------- Net income available to common stockholders $11,451 $12,538 $ 24,934 $ 36,647 ======= ======= ======== ======== Primary net income per share $0.74 $0.82 $1.62 $2.40 ===== ===== ===== ===== FULLY DILUTED: Average number of common shares outstanding 15,384 15,266 15,337 15,236 Assumed conversion of convertible preferred stock: Series A 526 587 544 608 Series B ** ** ** ** Incremental shares calculated using the Treasury Stock method 82 11 82 34 ------- ------- -------- -------- 15,992 15,864 15,963 15,878 ======= ======= ======== ======== Net income $21,297 $22,267 $ 54,401 $ 65,766 Less cash dividends paid on the Series B Preferred Stock (9,616) (9,475) (28,749) (28,323) ------- ------- -------- -------- Net income $11,681 $12,792 $ 25,652 $ 37,443 ======= ======= ======== ======== Fully diluted net income per share $0.73 $0.81 $1.61 $2.36 ===== ===== ===== ===== * NOT ADJUSTED FOR THE 3-FOR-2 COMMON STOCK SPLIT PAYABLE ON NOVEMBER 15, 1995 TO STOCKHOLDERS OF RECORD ON OCTOBER 30, 1995. ** THE SERIES B PREFERRED STOCK IS NOT CONSIDERED CONVERTIBLE FOR PURPOSES OF CALCULATING FULLY DILUTED NET INCOME PER SHARE AS IT IS CURRENTLY ANTIDILUTIVE.