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 *
Flynn James E
   2. Issuer Name and Ticker or Trading Symbol
DYNAVAX TECHNOLOGIES CORP [DVAX] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
780 THIRD AVENUE, 37TH FLOOR		 3. Date of Earliest Transaction (Month/Day/Year)
07/18/2007
(Street)

NEW YORK, NY 10017		 4. If Amendment, Date 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
(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

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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
Warrants (1) $ 5.13 07/18/2007   P   392,750   07/18/2007 01/18/2013 Common Stock, par value $.001 392,750 $ 0 392,750 I Through Deerfield Private Design Fund, L.P. (3)
Warrants (1) $ 5.13 07/18/2007   P   649,000   07/18/2007 01/18/2013 Common Stock, par value $.001 649,000 $ 0 649,000 I Through Deerfield Private Design International, L.P. (3)
Warrants (1) $ 5.13 07/18/2007   P   76,625   07/18/2007 01/18/2013 Common Stock, par value $.001 76,625 $ 0 76,625 I Through Deerfield Special Situations Fund, L.P. (2)
Warrants (1) $ 5.13 07/18/2007   P   131,625   07/18/2007 01/18/2013 Common Stock, par value $.001 131,625 $ 0 131,625 I Through Deerfield Special Situations International Limited (3)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Flynn James E
780 THIRD AVENUE
37TH FLOOR
NEW YORK, NY 10017		     X    
DEERFIELD CAPITAL LP
780 THIRD AVENUE
37TH FLOOR
NEW YORK, NY 10017		     X    
Deerfield Special Situations Fund, L.P.
780 3RD AVENUE
37TH FLOOR
NEW YORK, NY 10017		     X    
DEERFIELD MANAGEMENT CO /NY
780 THIRD AVENUE, 37TH FLOOR
NEW YORK, NY 10017		     X    
Deerfield Special Situations Fund International LTD
C/O HEMISPHERE MANAGEMENT (B.V.I.)
COLUMBUS CENTRE, P.O. BOX 3460
ROAD TOWN, TORTOLA, D8 -		     X    
DEERFIELD PRIVATE DESIGAN FUND L P
780 3RD AVE 37TH FL
NEW YORK, NY 10017		     X    

Signatures

 /s/ Darren Levine, Authorized Signatory   07/20/2007
**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) This Form 4 is being filed by James E. Flynn and by the entities listed on the Joint Filer Information Statement attached hereto (the "Reporting Persons").
(2) Deerfield Capital, L.P. is the general partner of Deerfield Special Situations Fund, L.P. James E. Flynn is the managing member of the general partner of Deerfield Capital, L.P. In accordance with Instruction 4(b)(iv) to Form 4, the entire amount of the Issuer's securities held by Deerfield Special Situations Fund, L.P. is reported herein. For purposes of Section 16 of the Securities Exchange Act of 1934, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its indirect pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.
(3) Deerfield Management Company, L.P. is the investment manager of Deerfield Private Design Fund, L.P., Deerfield Private Design International, L.P. and Deerfield Special Situations Fund International Limited (the "Funds"). James E. Flynn is the managing member of the general partner of Deerfield Management Company, L.P. In accordance with Instruction 4(b)(iv) to Form 4, the entire amount of the Issuer's securities held by the Funds is reported herein. For purposes of Section 16 of the Securities Exchange Act of 1934, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its indirect pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.
 
Remarks:
Power of Attorney  Exhibit 24

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