X0201 4 2004-04-08 1 0001062216 MEMORY PHARMACEUTICALS CORP MEMY 0001284390 GLSLP INVESTMENT 1 LTD PO BOX 255, BARFIELD HOUSE ST. JULIAN'S AVE, ST. PETER PORT GUERNSEY CHANNEL ISLANDS X0 GY1 3QL 0 0 0 1 Former 10% owner 0001284387 GLS GP LTD PO BOX 255, BARFIELD HOUSE ST. JULIAN'S AVE, ST. PETER PORT GUERNSEY CHANNEL ISLANDS X0 GY1 3QL 0 0 0 1 Former 10% owner 0001284388 GLOBAL LIFE SCIENCE L P PO BOX 255, BARFIELD HOUSE ST. JULIAN'S AVE, ST. PETER PORT GUERNSEY CHANNEL ISLANDS X0 GY1 3QL 0 0 0 1 Former 10% owner Common Stock 2004-04-08 4 C 0 487598.0000 0 A 487598.0000 I See Footnote Series B Convertible Preferred Stock 2004-04-08 4 C 0 357143.0000 D Common Stock 119047.0000 0 I See Footnote Series C Convertible Preferred Stock 2004-04-08 4 C 0 600000.0000 D Common Stock 213512.0000 0 I See Footnote Series D Convertible Preferred Stock 2004-04-08 4 C 0 465117.0000 D Common Stock 155039.0000 0 I See Footnote The shares of Convertible Preferred Stock reported consist of shares held of record by each of the entities listed below. GLS (GP) Limited is the general partner of Global Life Science Limited Partnership, who is in turn the general partner of GLS LP Investment I Limited. Each of the Filing Persons disclaims beneficial ownership of the shares except to the extent of his or its pecuniary interest therein. Each share of Series B and Series D Convertible Preferred Stock converted into .3333 shares of Common Stock. These securities automatically converted into Common Stock upon the closing of the Issuer's initial public offering. These securities do not have an expiration date. Each share of Series C Convertible Preferred Stock converted into .3559 shares of Common Stock. GLS LP Investment I, Ltd., by power of atty. 2004-04-08 GLS (GP) Limited, by power of atty. 2004-04-08 Global Life Science LP, by power of atty. 2004-04-08