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 --------------------- 1994 1993 -------- ------- Average number of shares used to compute primary earnings per share.................. 20.1 19.8 Common Stock issuable upon assumed conversion of Preferred Stock....................... 4.0 * -------- ------ Total................................................. 24.1 19.8 ======== ======= Net income, as adjusted per primary computation....... $ 16.9 $ 15.3 Add - Dividends paid and accrued on Preferred Stock... 3.3 * -------- ------- Net income, as adjusted............................... $ 20.2 $ 15.3 ======== ======== Net income per share, assuming full dilution.......... $ .84 $ .77 ======== ======== * Conversion of Preferred Stock excluded from computation of fully diluted earnings because of antidilutive effects. Additional fully diluted computation (1) - --------------------------------------- Average number of shares used to compute primary earnings per share.................. 19.5 Common Stock issuable upon assumed conversion of Preferred Stock and stock option exercises.............................. 4.4 -------- 23.9 ======== Net income, as adjusted per primary computation....... $ 15.3 Add - Dividends paid and accrued on Preferred Stock... 3.3 -------- $ 18.6 ======== Net income per share assuming full dilution........... $ .78 ======== (1) This calculation is submitted in accordance with Regulation S-K item 601(b)(11), although it is contrary to paragraph 40 of APB Opinion No. 15 because it produces an antidilutive result. -12-