EXHIBIT 11 SWIFT TRANSPORTATION CO., INC. & SUBSIDIARIES Schedule of Computation of Net Earnings Per Share (in thousands, except per share amounts) Three months ended March 31, 1998 1997 ------- ------- Net earnings $ 9,412 $ 6,231 ======= ======= Weighted average shares: Common shares outstanding 42,498 41,918 Common equivalent shares issuable upon exercise of employee stock options (1) 938 1,063 ------- ------- Total weighted average shares -diluted 43,436 42,981 ======= ======= Basic earnings per share $ .22 $ .15 ======= ======= Diluted earnings per share $ .22 $ .14 ======= ======= Notes: (1) Amount calculated using the treasury stock method and fair market values. (2) The 1997 share amounts and earnings per share have been retroactively adjusted to reflect the 3-for-2 stock split payable on March 12, 1998 to shareholders of record at the close of business on March 2, 1998. 15