Citrix Systems, Inc. Exhibit 11 Computation of Earnings Per Share (In Thousands, Except Per Share Data) Three Months ended June 30, Six Months ended June 30, 1997 1996 1997 1996 ------------------------------------ ------------------------------------ Primary and fully diluted: Average shares outstanding 27,176 24,179 27,019 24,006 Net effect of dilutive stock options based on the treasury stock method 1,903 2,079 1,833 2,122 ----------------- --------------- ---------------- ---------------- Total 29,079 26,258 28,852 26,128 ================= =============== ================ ================ Net income $ 8,299 $ 3,617 $ 15,792 $ 6,470 ================= =============== ================ ================ Per share amount $ 0.29 $ 0.14 $ 0.55 $ 0.25 ================= =============== ================ ================