SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
MPM BioVentures IV LP

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON ST., 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
MEMORY PHARMACEUTICALS CORP [ MEMY ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
12/18/2006
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 12/18/2006 12/18/2006 P 2,315,151 A $1.11 11,391,019 I See Remarks
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
1. Name and Address of Reporting Person*
MPM BioVentures IV LP

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON ST., 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
MPM BioVentures IV QP LP

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON ST., 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
MPM Asset Management Investors BV4 LLC

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON ST., 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
MPM BioVentures IV LLC

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON ST., 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
MPM BioVentures IV GP LLC

(Last) (First) (Middle)
C/O MPM ASSET MANAGEMENT
200 CLARENDON ST., 54TH FLOOR

(Street)
BOSTON MA 02116

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
Explanation of Responses:
Remarks:
Pursuant to the terms of the certain Securities Purchase Agreement by and among the issuer and various investors, dated as of October 5, 2006, MPM BioVentures IV, L.P. ("BV LP"), MPM BioVentures IV-QP, L.P. ("BV IV QP") and MPM Asset Management Investors BV4 LLC ("AM BV4" and together with BV IV and BV IV QP, the "MPM Entities") purchased shares of common stock of the issuer at a first closing and a second closing. The total shares acquired by the MPM Entities in the first closing and the second closing are held as follows: 226,783 by MPM BioVentures IV, L.P. ("BV IV"), 10,794,902 by MPM BioVentures IV-QP, L.P. ("BV IV QP"), and 369,334 by MPM Asset Management Investors BV4 LLC ("AM BV4"). MPM BioVentures IV GP LLC and MPM BioVentures IV LLC are the direct and indirect general partners of BV IV, BV IV QP and AM BV4. Vaughn Kailian, Ansbert Gadicke, Luke Evnin, Steven St. Peter, William Greene, James Paul Scopa, Ashley Dombkowski and John Vander Vort are the members of the general partner of BV IV, BV IV QP and AM BV4 and members of MPM Asset Management Investors BV4 LLC. Each member of the group disclaims beneficial ownership of the securities except to the extent of its pecuniary interest therein. The shares acquired by the MPM Entities in the second closing are held as follows: 46,092 by BV IV, 2,193,994 by BV IV QP, and 75,065 by AM BV4. MPM BioVentures IV GP LLC and MPM BioVentures IV LLC are the direct and indirect general partners of BV IV, BV IV QP and AM BV4. Vaughn Kailian, Ansbert Gadicke, Luke Evnin, Steven St. Peter, William Greene, James Paul Scopa, Ashley Dombkowski and John Vander Vort are the members of the general partner of BV IV, BV IV QP and AM BV4 and members of MPM Asset Management Investors BV4 LLC. Each member of the group disclaims beneficial ownership of the securities except to the extent of its pecuniary interest therein. See Form 4 for Vaughn Kailian for additional members of this joint filing.
/s/ Vaughn Kailian, member of MPM BioVentures IV LLC, the general partner of MPM BioVentures IV GP LLC, in its capacity as the general partner of MPM BioVentures IV, L.P. 01/05/2007
/s/ Vaughn Kailian, member of MPM BioVentures IV LLC, the general partner of MPM BioVentures IV GP LLC, in its capacity as the general partner of MPM BioVentures IV-QP, L.P. 01/05/2007
/s/ Vaughn Kailian, member of MPM Asset Management Investors BV4 LLC 01/05/2007
s/ Vaughn Kailian, member of MPM BioVentures IV LLC, in its capacity as the general partner of MPM BioVentures IV GP LLC 01/05/2007
/s/ Vaughn Kailian, member of MPM BioVentures IV LLC, the general partner of MPM BioVentures IV GP LLC, in its capacity as the general partner of MPM BioVentures IV, L.P. 11/01/2006 01/05/2007
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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