1 EXHIBIT 11.01 ALUMAX INC. CALCULATION OF EARNINGS PER COMMON SHARE (IN MILLIONS, EXCEPT PER SHARE AMOUNTS) Three Months Ended Six Months Ended June 30, June 30, --------------- ---------------- 1997 1996 1997 1996 ------ ------ ------ ------- Primary earnings per common share 1. Net earnings ...................................... $ 35.8 $ 83.1 $ 62.5 $ 178.5 2. Deduct - Series A Convertible Preferred dividends ......................... -- (2.4) -- (4.7) ------ ------ ------ ------- 3. Earnings applicable to common shares .............. $ 35.8 $ 80.7 $ 62.5 $ 173.8 ====== ====== ====== ======= 4. Average primary shares outstanding ................ 55.9 45.7 55.9 45.6 ====== ====== ====== ======= 5. Primary earnings per common share (line 3 divided by line 4) .................. $ 0.64 $ 1.77 $ 1.12 $ 3.81 ====== ====== ====== ======= Fully diluted earnings per common share 6. Earnings applicable to common shares .............. $ 35.8 $ 80.7 $ 62.5 $ 173.8 7. Add - Series A Convertible Preferred dividends .... -- 2.4 -- 4.7 ------ ------ ------ ------- 8. Earnings applicable to common shares .............. $ 35.8 $ 83.1 $ 62.5 $ 178.5 ====== ====== ====== ======= 9. Average fully diluted shares outstanding .......... 56.0 55.3 55.9 55.2 ====== ====== ====== ======= 10. Fully diluted earnings per common share (line 8 divided by line 9) .................. $ 0.64 $ 1.50 $ 1.12 $ 3.23 ====== ====== ====== ======= -20-