1 EXHIBIT 11 CAPSTEAD MORTGAGE CORPORATION COMPUTATION OF NET INCOME PER SHARE (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS) 1999 1998 1997 --------- --------- --------- BASIC: Average number of common shares outstanding 58,348 60,948 51,257 --------- --------- --------- Net income (loss) $ 57,909 $(234,764) $ 159,926 Less cash dividends paid on convertible preferred shares: Series A ($1.60 paid per share) (598) (610) (683) Series B ($1.26 paid per share) (21,391) (21,732) (24,774) Series C ($0.03 paid per share) (185) -- -- Series D ($0.02 paid per share) (131) -- -- Repurchase price in excess of recorded value (251) -- -- --------- --------- --------- Net income available to common stockholders $ 35,353 $(257,106) $ 134,469 --------- --------- --------- Basic net income (loss) per common share $ 0.61 $ (4.22) $ 2.62 --------- --------- --------- DILUTED:* Average number of common shares outstanding 58,348 60,948 51,257 Assumed conversion of dilutive convertible preferred shares: Series A -- -- 889 Series B -- -- 14,776 Series C 339 -- -- Series D 339 -- -- Incremental shares calculated using the treasury stock method 20 -- 1,101 59,046 60,948 68,023 --------- --------- --------- Net income (loss) $ 57,909 $(234,764) $ 159,926 Less cash dividends paid on antidilutive convertible preferred shares: Series A ($1.60 paid per share) (598) (610) -- Series B ($1.26 paid per share) (21,391) (21,732) -- Repurchase price in excess of recorded value (251) -- -- --------- --------- --------- Net income available to common stockholders $ 35,669 $(257,106) $ 159,926 --------- --------- --------- Diluted net income (loss) per common share $ 0.60 $ (4.22) $ 2.35 --------- --------- --------- * The Series A and B shares were not considered convertible for purposes of calculating diluted net income (loss) per common share in 1999 and 1998 because the effects of conversion were antidilutive. The Series C and D shares were issued in December 1999.