Exhibit (11) ------------ OWENS CORNING AND SUBSIDIARIES COMPUTATION OF PER SHARE EARNINGS Quarter Ended March 31, --------- 2001 2000 ---- ---- (In millions of dollars, except share data) Basic: Net income $ (10) $ 48 ----------- ---------- Basic weighted average number of common shares outstanding (thousands) 55,042 54,590 Basic per share amount $ (.19) $ .88 =========== ========== Diluted: - ------- Net income $ (10) $ 50 ----------- ---------- Weighted average number of shares outstanding (thousands) 55,042 54,590 Weighted average common equivalent shares (thousands): Deferred awards - 576 Stock options using the higher of average market price or market price at end of period - 22 Shares from assumed conversion of preferred securities - 4,566 ----------- ---------- Diluted weighted average number of common shares outstanding and common equivalent shares (thousands) 55,042 59,754 =========== ========== Diluted per share amount $ (.19) $ .84 =========== ==========