Exhibit (11) ------------ OWENS CORNING AND SUBSIDIARIES COMPUTATION OF PER SHARE EARNINGS Quarter Ended Nine Months Ended September 30, September 30, ------------- ------------- 2001 2000 2001 2000 ---- ---- ---- ---- (In millions of dollars, except share data) Basic: - ----- Net income (loss) $ 27 $ 14 $ 46 ($ 363) ========= ============ ========== =========== Basic weighted average number of common shares outstanding (thousands) 55,079 55,008 55,064 54,759 Basic per share amount $ .50 $ .25 $ .84 ($ 6.64) ========= ============ ========== =========== Diluted: - ------- Net income $ 27 $ 14 $ 46 ($ 363) ========= ============ ========== =========== Weighted average number of common shares outstanding (thousands) 55,079 55,008 55,064 54,759 Weighted average common equivalent shares (thousands): Deferred awards 26 26 26 - Stock options using the average market price during the period 264 431 297 - Shares from assumed conversion of preferred securities 4,566 - 4,566 - --------- ------------ ---------- ---------- Diluted weighted average number of common shares outstanding and common equivalent shares (thousands) 59,935 55,465 59,953 54,759 ========= ============ ========== ========== Diluted per share amount $ .46 $ .25 $ .77 ($ 6.64) ========= ============ ========== ==========