Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Kauffman Michael G
  2. Issuer Name and Ticker or Trading Symbol
EPIX Pharmaceuticals, Inc. [EPIX]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Executive Officer
(Last)
(First)
(Middle)
C/O EPIX PHARMACEUTICALS, INC., 4 MAGUIRE ROAD
3. Date of Earliest Transaction (Month/Day/Year)
08/16/2006
(Street)

LEXINGTON, MA 02421
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
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 08/16/2006   A   123,294 A (1) 123,294 D  

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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 Underlying Securities
(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 of Derivative Security: 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
Stock Option (Right to Buy) $ 2.18 08/16/2006   A   19,820     (2) 08/11/2013 Common Stock 19,820 (2) 19,820 D  
Stock Option (Right to Buy) $ 2.18 08/16/2006   A   14,946     (3) 08/11/2013 Common Stock 14,946 (3) 14,946 D  
Stock Option (Right to Buy) $ 2.18 08/16/2006   A   11,480     (4) 01/29/2014 Common Stock 11,480 (4) 11,480 D  
Stock Option (Right to Buy) $ 2.18 08/16/2006   A   4,592     (5) 04/29/2014 Common Stock 4,592 (5) 4,592 D  
Stock Option (Right to Buy) $ 0.98 08/16/2006   A   77,193     (6) 09/23/2014 Common Stock 77,193 (6) 77,193 D  
Stock Option (Right to Buy) $ 0.98 08/16/2006   A   84,794     (7) 09/23/2014 Common Stock 84,794 (7) 84,794 D  
Stock Option (Right to Buy) $ 0.98 08/16/2006   A   71,622     (8) 01/18/2015 Common Stock 71,622 (8) 71,622 D  
Stock Option (Right to Buy) $ 0.98 08/16/2006   A   138,093     (9) 01/18/2015 Common Stock 138,093 (9) 138,093 D  
Stock Option (Right to Buy) $ 1.74 08/16/2006   A   24,457     (10) 04/28/2015 Common Stock 24,457 (10) 24,457 D  
Stock Option (Right to Buy) $ 1.74 08/16/2006   A   44,600     (11) 04/28/2015 Common Stock 44,600 (11) 44,600 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Kauffman Michael G
C/O EPIX PHARMACEUTICALS, INC.
4 MAGUIRE ROAD
LEXINGTON, MA 02421
  X     Chief Executive Officer  

Signatures

 /s/ Michael Berdik Attorney-in-Fact   08/18/2006
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Received in exchange for 148,888 shares of Predix Pharmaceuticals Holdings, Inc. ("Predix") common stock and 252 shares of Predix?s Series C Convertible Preferred Stock (on an as-converted to Predix common stock basis) based on an exchange ratio of 0.826702 in connection with the merger of EPIX Pharmaceuticals, Inc. ("EPIX") and Predix (the "Merger") and after EPIX having effected a 1 for 1.5 reverse stock split. On the effective date of the Merger, the closing price of EPIX?s common stock was $4.85 per share.
(2) Received in the Merger in exchange for a stock option to acquire 23,976 shares of Predix common stock for $1.80 per share. The terms and provisions of the Predix option plan under which this option was granted will continue to apply to this option. The option vests over a four year period at a rate of 25% on September 23, 2003, and the balance vesting in equal annual installments over the remaining three years.
(3) Received in the Merger in exchange for a stock option to acquire 18,080 shares of Predix common stock for $1.80 per share. The terms and provisions of the Predix option plan under which this option was granted will continue to apply to this option. The option vests over a four year period at a rate of 25% on July 31, 2004, and the balance vesting in equal annual installments over the remaining three years.
(4) Received in the Merger in exchange for a stock option to acquire 13,888 shares of Predix common stock for $1.80 per share. The terms and provisions of the Predix option plan under which this option was granted will continue to apply to this option. The option vests over a four year period at a rate of 25% on January 29, 2005, and the balance vesting in equal annual installments over the remaining three years.
(5) Received in the Merger in exchange for a stock option to acquire 5,555 shares of Predix common stock for $1.80 per share. The terms and provisions of the Predix option plan under which this option was granted will continue to apply to this option. The option began vesting in 16 quarterly installments of 6.25% each beginning on April 29, 2005.
(6) Received in the Merger in exchange for a stock option to acquire 93,379 shares of Predix common stock for $0.81 per share. The terms and provisions of the Predix option plan under which this option was granted will continue to apply to this option. The option vests in 13 approximately equal monthly installments beginning on August 23, 2005.
(7) Received in the Merger in exchange for a stock option to acquire 102,574 shares of Predix common stock for $0.81 per share. The terms and provisions of the Predix option plan under which this option was granted will continue to apply to this option. The option has been fully vested as of December 23, 2004.
(8) Received in the Merger in exchange for a stock option to acquire 86,640 shares of Predix common stock for $0.81 per share. The terms and provisions of the Predix option plan under which this option was granted will continue to apply to this option. The option began to vest as to 1/11th of 55,043 of the shares each month beginning on February 18, 2005 and approximately 1/12th of the remaining 31,597 of the shares began vesting each month on January 18, 2006.
(9) Received in the Merger in exchange for a stock option to acquire 167,049 shares of Predix common stock for $0.81 per share. The terms and provisions of the Predix option plan under which this option was granted will continue to apply to this option. The option began vesting as to 1/11th of 3,093 of the shares each month beginning on February 18, 2005, approximately 1/12th of 31,825 of the shares each month beginning on January 18, 2006 and approximately 1/25th of 132,131 of the shares will vest each month starting on January 18, 2007.
(10) Received in the Merger in exchange for a stock option to acquire 29,586 shares of Predix common stock for $1.44 per share. The terms and provisions of the Predix option plan under which this option was granted will continue to apply to this option. The option began vesting as to 1/17th of the shares each month on August 1, 2005.
(11) Received in the Merger in exchange for a stock option to acquire 53,952 shares of Predix common stock for $1.44 per share. The terms and provisions of the Predix option plan under which this option was granted will continue to apply to this option. The option will begin to vest as to 1/31th of the shares each month beginning on January 1, 2007.

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