CONCURRENT COMPUTER CORPORATION EXHIBIT 11 BASIC AND DILUTED EARNINGS (LOSS) PER SHARE COMPUTATION THREE MONTHS ENDED NINE MONTHS ENDED MARCH 31, 2001 MARCH 31, 2001 BASIC DILUTED BASIC DILUTED ------- -------- -------- --------- Average outstanding shares 55,021 55,021 54,558 54,558 Dilutive effect of options and warrants - 2,104 - - ------- -------- -------- --------- Equivalent shares 55,021 57,125 54,558 54,558 ======= ======== ======== ========= Net income (loss) available to common Stockholders $ 802 $ 802 $(4,688) $ (4,688) ======= ======== ======== ========= Earnings (loss) per share $ 0.01 $ 0.01 $ (0.09) $ (0.09) ======= ======== ======== ========= THREE MONTHS ENDED NINE MONTHS ENDED MARCH 31, 2000 MARCH 31, 2000 BASIC DILUTED BASIC DILUTED -------- --------- --------- --------- Average outstanding shares 53,503 53,503 51,335 51,335 Dilutive effect of options and warrants - - - - -------- --------- --------- --------- Equivalent shares 53,503 53,503 51,335 51,335 ======== ========= ========= ========= Net income (loss) available to common stockholders $(2,215) $ (2,215) $(21,387) $(21,387) ======== ========= ========= ========= Earnings (loss) per share $ (0.04) $ (0.04) $ (0.42) $ (0.42) ======== ========= ========= =========