1 EXHIBIT NO. 11 -------------- THE PROGRESSIVE CORPORATION COMPUTATION OF EARNINGS PER SHARE (millions - except per share amounts) Years Ended December 31, 1998 1997 1996 --------------------------------------------------------------------------------------- Per Per Per Amount Share Amount Share Amount Share --------------------------------------------------------------------------------------- Basic: Net income $456.7 $400.0 $313.7 Less: Preferred stock dividends -- -- (3.5) Excess Preferred Stock liquidation price over carrying value -- -- (2.9) --------------------------------------------------------------------------------------- $456.7 $6.30 $400.0 $5.56 $307.3 $4.29 ======================================================================================= Average shares outstanding 72.5 72.0 71.6 ================ ================ ================= Diluted: Net income $456.7 $400.0 $313.7 Less: Preferred stock dividends -- -- (3.5) Excess Preferred Stock liquidation price over carrying value -- -- (2.9) --------------------------------------------------------------------------------------- $456.7 $6.11 $400.0 $5.31 $307.3 $4.14 ======================================================================================= Average shares outstanding 72.5 72.0 71.6 Net effect of dilutive stock options 2.2 3.3 2.6 --------------------------------------------------------------------------------------- Total 74.7 75.3 74.2 =======================================================================================