Exhibit 11.1 Neurogen Corporation Computation of Net Earnings (Loss) Per Common Share (in thousands, except Net Earnings (Loss) per Common Share amounts) Three Months Three Months Ended Ended March 31,1996 March 31,1995 (Unaudited) (Unaudited) ------------- -------------- Weighted average shares of common stock outstanding 14,020 10,084 Dilutive effect of: Warrants (1) 43 - Stock options (1) 1,484 - ---------- ---------- Common and common equivalent shares 15,547 10,084 ========== ========== Net income (loss) $ 3,610 $ (1,700) ========== ========== Earnings (loss) per common and common equivalent shares (1) $ 0.23 $ (0.17) ========== ========== (1) The common stock equivalents have not been included in periods with losses as their inclusion would be antidilutive.