EMC CORPORATION Exhibit 11.1 Computation of Primary and Fully Diluted Net Income Per Share (Amounts in thousands except share and per share data) Three Months Ended ---------------------------- March 30, April 1, 1996 1995 ------------- ------------- PRIMARY - ------- Net income $ 84,545 $ 85,449 Add back interest expense on convertible notes 2,440 2,440 Less tax effect on interest expense on convertible notes (976) (976) ------------ ------------ Net income for purposes of calculating primary net income per share $ 86,009 $ 86,913 ============ ============ Weighted average shares outstanding during the period 230,488,964 214,045,611 Common equivalent shares 18,050,105 21,034,178 ------------ ------------ Common and common equivalent shares outstanding for purpose of calculating primary net income per share 248,539,069 235,079,789 ============ ============ Primary net income per share (Note 4) $0.35 $0.37 FULLY DILUTED - ------------- Net income $ 84,545 $ 85,449 Add back interest expense on convertible notes and debentures 2,440 3,055 Less tax effect on interest expense on convertible notes and debentures (976) (1,222) ------------ ------------ Net income for purpose of calculating fully diluted net income per share $ 86,009 $ 87,282 ============ ============ Common and common equivalent shares outstanding for purpose of calculating primary net income per share 248,539,069 235,079,789 Incremental shares to reflect full dilution, primarily from convertible subordinated debentures in 1995 340,230 12,342,764 ------------ ------------ Total shares for purpose of calculating fully diluted net income per share 248,879,299 247,422,553 ============ ============ Fully diluted net income per share (Note 4) $0.35 $0.35