CLOSURE MEDICAL CORPORATION COMPUTATION OF NET LOSS PER SHARE (Unaudited) (In thousands, except per share data) THREE MONTHS ENDED MARCH 31, MARCH 31, 1999 1998 ---- ---- Weighted average common shares outstanding for the period 13,304 13,252 ------------- ------------------- Shares used in computing net loss per share- basic and diluted 13,304 13,252 ------------- ------------------- Net loss (565) $ (1,956) ------------- ------------------- Net loss per share- basic and diluted (0.04) $ (0.15) ------------- -------------------