CONCURRENT COMPUTER CORPORATION EXHIBIT 11 BASIC AND DILUTED EARNINGS (LOSS) PER SHARE COMPUTATION THREE MONTHS ENDED NINE MONTHS ENDED MARCH 31, 2000 MARCH 31, 2000 ------------------- ------------------ BASIC/DILUTED BASIC/DILUTED ------------------- ------------------ Average outstanding shares 53,503 51,335 Dilutive options outstanding, net - - ------------------- ------------------ Equivalent Shares 53,503 51,335 =================== ================== Net income (loss) available to common stockholders ($2,215) ($21,387) =================== ================== Earnings (loss) per share $ (0.04) $ (0.42) =================== ================== THREE MONTHS ENDED NINE MONTHS ENDED MARCH 31, 1999 MARCH 31, 1999 ----------------- ----------------- BASIC DILUTED BASIC DILUTED ------- -------- ------- -------- Average outstanding shares 48,043 48,043 47,855 47,855 Dilutive options outstanding, net - 2,938 - 1,331 ------- -------- ------- -------- Equivalent Shares 48,043 50,981 47,855 49,186 ======= ======== ======= ======== Net income $ 294 $ 294 $ 783 $ 783 ======= ======== ======= ======== Earnings per share $ 0.01 $ 0.01 $ 0.02 $ 0.02 ======= ======== ======= ========