Exhibit 11B GATX CORPORATION AND SUBSIDIARIES COMPUTATION OF NET INCOME PER SHARE OF COMMON STOCK AND COMMON STOCK EQUIVALENTS ASSUMING FULL DILUTION In Millions, Except Per Share Amounts Three Months Ended March 31 ---------------------- 1996 1995 -------- ------ Average number of shares used to compute primary earnings per share...................... 20.5 20.3 Common stock issuable upon assumed conversion of preferred stock........................... 4.0 4.0 -------- ------ Total shares............................................ 24.5 24.3 ======= ======= Net income, as adjusted per primary computation ......... $ 21.4 $ 22.4 Add - Dividends paid and accrued on preferred stock ...... 3.3 3.3 ------- ------- Net income, as adjusted................................... $ 24.7 $ 25.7 ====== ======= Net income per share, assuming full dilution ............ $ 1.01 $ 1.06 ====== ======= -12-