EXHIBIT 11 SWIFT TRANSPORTATION CO., INC. & SUBSIDIARIES SCHEDULE OF COMPUTATION OF NET EARNINGS PER SHARE (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS) YEAR ENDED DECEMBER 31, --------------------------- 1998 1997 1996 ---- ---- ---- Net Earnings ...................................... $55,511 $41,644 $27,422 ======= ======= ======= Weighted average shares: Common shares outstanding ....................... 64,005 63,363 56,151 Common equivalent shares issuable upon exercise of employee stock options (1).......... 1,245 1,413 1,603 ------- ------- ------- Total weighted average shares -- diluted ...... 65,250 64,776 57,754 ======= ======= ======= Basic earnings per share .......................... $ .87 $ .66 $ .49 ======= ======= ======= Diluted earnings per share ........................ $ .85 $ .64 $ .47 ======= ======= ======= Notes: (1) Amount calculated using the treasury stock method and fair market values. (2) All share amounts and earnings per share have been retroactively adjusted to reflect the 3-for-2 stock split payable on April 10, 1999 to shareholders of record at the close of business on March 31, 1999.