EXHIBIT 11.1 NEOPROBE CORPORATION COMPUTATION OF INCOME PER SHARE
Three Months Ended September 30, Nine Months Ended September 30, 2001 2000 2001 2000 --------------- -------------- ------------ -------------- Weighted average number of common shares outstanding used in computing basic income per share 25,898,264 25,855,341 25,896,342 25,628,355 Add net shares issuable pursuant to stock option plans less shares assumed repurchased at the average market price 215,790 215,599 223,474 356,820 Add net shares issuable pursuant to outstanding warrants less shares assumed repurchased at the average market price -- 4,453 -- 670,081 ----------- ----------- ----------- ----------- Weighted average number of common shares outstanding used in computing diluted income per share 26,114,054 26,075,393 26,119,816 26,655,256 =========== =========== =========== =========== Income attributable to common stockholders $ 401,269 $ 504,090 $ 659,741 $ 351,873 Basic income per share attributable to common stockholders $ 0.02 $ 0.02 $ 0.03 $ 0.01 =========== =========== =========== =========== Diluted income per share attributable to common stockholders $ 0.02 $ 0.02 $ 0.03 $ 0.01 =========== =========== =========== ===========